- x2go-user - X2Go ListServ

Running without window/desktop manager
by Marat Khalili 12 Apr '17

12 Apr '17

Dear all, I'm new to X2Go having used FreeNX previously. I've installed x2goserver on Ubuntu 16.04 server from ppa:x2go/stable, and can start published applications successfully. However, I didn't install any window or desktop manager, since I don't think my clients will need it. Neither did I install any bindings. I wonder, what features do I lose this way? Particularly, neither local printing nor shared folders seem to work (tested from Windows and Ubuntu 14.04 stock client), can this be related, or is it a separate problem? Directory ~/media/disk exists, but it is empty; and only "Print to File" is available in remote Firefox. If window/desktop manager is needed, which should I install to handle just this problem? Do I need bindings package too? (I'd prefer not to have unnecessary packages on my server to avoid frequent security updates.) -- -- With Best Regards, Marat Khalili

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Sponsorship of X2Go macOS Client Development and of X2Go Linux on POWER Development
by Stefan Baur 07 Apr '17

07 Apr '17

Hi everyone, as previously announced, CFD.direct has decided to sponsor our macOS Client Development, and XCLOUD.me, has jumped right in and offered us a special rebate, so we can run two of their smallest instances for the price of one medium instance. This means that will be able to offer automated X2GoClient for macOS builds both for macOS 10.10 (these should work on 10.9 and 10.8 as well) as well as for macOS 10.12. The machines have been provisioned today, and Mihai will be setting them up over the course of the next few days. Once he's done with that, we'll move on to supporting the POWER platform directly again (at present, some distributions grab our source and turn it into packages for their POWER flavor, but there's no official X2Go repository where you could get stable or nightly builds directly from us). IBM and the Oregon State University's Open Source Lab have teamed up and are providing us with four POWER8 virtual machines (with the option to add more, should the need arise), manageable via an OpenStack WebGUI. Unlike the previous POWER8 virtual machine that we had, these new servers are going to be available for us for the foreseeable future. We intend to run at least two (one for Big-Endian, the other for Little-Endian) of those machines as Jenkins Build Slaves, just as the virtual macOS machines, so we will soon be able to provide automated builds for POWER. The other two we currently intend to run as demo servers and for testing and bugsquashing, though we might repurpose them as Jenkins Build Slaves if it turns out that we need one per Endianess *and* packaging system (DEB vs. RPM). There's one bug that's cropped up on POWER8 LE only, and we're already curious to learn what's causing it, so we're glad we finally have access to a test environment again. Here is a quick overview over the sponsors mentioned above: CFD Direct <https://cfd.direct> are the primary developers of OpenFOAM <https://openfoam.org>, the free, open source software for computational fluid dynamics. XCLOUD.me <https://xcloud.me/> is a hosting company that specializes in providing virtual macOS cloud instances - all 100% legal, as the virtual machines run on top of real Apple hardware. IBM are the original developers of the POWER systems used in midrange computing. You can learn more about the Linux on POWER ecosystem here: <http://www-03.ibm.com/systems/power/software/linux/> Oregon State University's Open Source Lab (OSU/OSL) is a nonprofit organization working for the advancement of open source technologies. They offer various means of support to open source projects, one of them being free hosting on both Intel and POWER servers. To find out more about them, please visit their web site at <http://osuosl.org/> Kind Regards, Stefan Baur X2Go Project/Community Manager -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243

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Fedora 25
by Robert Dinse 06 Apr '17

06 Apr '17

Something broke in Fedora 25 and now the only window manager I can get to work over x2go is icewm, mate will no longer start, kde will no longer start. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

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Re: [X2Go-User] Windows x2go client displays at incorrect resolution
by Davis, Jean-Paul 04 Apr '17

04 Apr '17

> > Session Type = MATE (automatically changes to "Custom desktop" with > > command "MATE") Display = Fullscreen Set display DPI = 192 > > > > The session starts just fine, filling the screen with the MATE > > desktop, except that the display resolution is incorrect... with > > following information obtained inside a MATE terminal: > > > > jpdavis: xdpyinfo | grep dots > > > > resolution: 192x193 dots per inch > > > > jpdavis: ps -waux | grep $DISPLAY | grep x2goagent > > > > jpdavis 28204 0.2 0.3 217268 57696 ? S 10:05 0:08 > > /usr/lib64/nx/../x2go/bin/x2goagent -nolisten tcp -nolisten tcp -dpi > > 192 -D -auth /home/jpdavis/.Xauthority -name > > X2GO-jpdavis-50-1491062721_stDMATE_dp32 :50 > > > > jpdavis: xrandr --prop > > > > xrandr: Failed to get size of gamma for output default Screen 0: > > minimum 320 x 240, current 1280 x 720, maximum 1920 x 1200 default > > connected 1280x720+0+0 0mm x 0mm > > > > Thus the actual dpi being used by the display is 192*1280/2560 = 96, > > not the 192 sent to x2goagent and reported by xdpyinfo. > > Your x2goagent is running using the correct (forced) 192 dpi as specified via the > command line. But your x2go window is much smaller than your native > desktop. > > I am not really sure what to do here. Maybe we should try to calculate the > window size in mm, pass that to x2goagent and let it recalculate the dpi itself. I didn't see any options to x2goagent for passing window size. I actually get something much more reasonable when I DON'T specify a DPI (see attachments); then xdpyinfo reports dpi of 75x75 and size 1280x720, but xrandr still says maximum resolution is 1920x1200. > > > attempting to change the resolution from inside the session... > > > > xrandr --size 1920x1200 works but keeps same actual dpi of 96 (so > > desktop is larger than my screen) > > I don't get that. How can the desktop become larger than the screen? > The window size of your x2go session is the size of the xserver the MATE > desktop sees. The dpi setting should - from my understanding - influence the > selected fonts and maybe scaling, but not the overall size of the desktop. > > Can you please provide some screen shots to minimize miunderstandings? By "screen" I mean the physical laptop display panel. I have attached three fullscreen (2560x1440) images (taken on the laptop using Windows Snipping Tool) to this e-mail, I don't know if they will show up in the mail list (if not, well unfortunately I don't have anywhere I can put them publicly to link to), but at least you should receive them. Capture_x2go_default_setdpi192.PNG = case with client "set display dpi" turned on and equal to 192, in which the X session thinks the display is 1280x720 at 96 dpi. Capture_x2go_1920x1200setdpi192.PNG = what I see after issuing the command "xrandr --size 1920x1200" in the session; this is what I meant by desktop larger than the physical screen. Capture_x2go_default_nosetdpi.PNG = case with client "set display dpi" turned off, in which the X session still thinks the display is 1280x720 but at 75 dpi. This is better than the forced-dpi=192 cases, but still doesn't look like it's actually using the full resolution of the laptop. So with some more research I have learned that the apparent 96 dpi I'm seeing is actually forced by gdm via gnome-settings-daemon for all X sessions, as explained in the comments at https://git.gnome.org/browse/gnome-settings-daemon/tree/plugins/xsettings/g…. On the server, Xorg.0.log shows that Xorg correctly finds resolution (3840x2160) and dpi (139x137) of the attached monitor; but xdpyinfo shows dpi=96. Perhaps the remote X session generated by the x2go login is using the physical size of the laptop screen but with dpi=96 to arrive at 1280x720. I believe that when I force dpi=192, gdm automatically applies a scaling of 2, which would explain why everything is so huge in that case. One thing I don't understand very well is the relationship between X running on the x2go server machine and X (in this case VcXsrv) running on the x2go client machine. I have toyed with the idea of putting an xrandr command in a display-specific script under /etc/gdm/ to set up the screen for my remote sessions (I only ever have one running, and it's always display :10), but I haven't actually tried this yet. > Also, can you please retry using the current developer version of nx-libs as > described here: > http://wiki.x2go.org/doku.php/doc:howto:nx-libs-betatesting I made an attempt at this using the instructions in the README file (https://github.com/ArcticaProject/nx-libs) to create rhel/centos/fedora rpms, but I got an error from the mock --buildsrpm command; I think I was supposed to actually build the libraries first (using make all), so I'll try that and report back. Jean-Paul

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md5 and sha1 checks
by Jeff Sadowski 03 Apr '17

03 Apr '17

I was wondering if the person building the binaries could put those (md5 and sha1 sums) both on a page that is gpg signed? Then as I get to know the person building the binaries and if the key changes I can be suspicious of someone putting up another binary.

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Terminating a session of a no longer existent user fails (trying to su forever)
by Holger.Krause＠med.uni-duesseldorf.de 03 Apr '17

03 Apr '17

Dear list, I'm failing to terminate a session of a no longer existing NIS user. Situation ------------- User accounts are imported via NIS by the X2Go server ('lucas'). Home directories are mounted via NFS. Recently, an account ('prakti03') was deleted on the NIS server, and the corresponding home directory purged from the file server, while there was still a X2Go session running on the X2Go server. What I did --------------- root@lucas:~# x2golistsessions_root 31436|prakti03-56-1486112626_stDLXDE_dp32|56|lucas|S|2017-02-03T10:03:46|29549c54420137ca42be3121da1dddb4|10.10.6.48|61014|61015|2017-02-10T15:04:53|prakti03|4674671|61016| root@lucas:~# /usr/bin/x2goterminate-session prakti03-56-1486112626_stDLXDE_dp32 root@lucas:~# echo $? 0 root@lucas:~# x2golistsessions_root 31436|prakti03-56-1486112626_stDLXDE_dp32|56|lucas|S|2017-02-03T10:03:46|29549c54420137ca42be3121da1dddb4|10.10.6.48|61014|61015|2017-02-10T15:04:53|prakti03|4676057|61016| What I observe afterwards -------------------------------------- /var/log/auth.log is flooded with entries like this (roughly 70 blocks per minute): Apr 2 07:00:00 lucas su[9223]: No passwd entry for user 'prakti03' Apr 2 07:00:00 lucas su[9223]: FAILED su for prakti03 by root Apr 2 07:00:00 lucas su[9223]: - ??? root:prakti03 Question: -------------- How can I make X2Go 'terminate the session'? ('Session' in quotation marks, as there are no processes with the user's (numerical) UID running anymore.) Thanks in advance, Holger

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marco: Fatal IO error 104 on X2Go with Fedora 25
by Robert Kudyba 31 Mar '17

31 Mar '17

Is there a better place to report these? Which Bugzilla? For Fedora? Which component? check out the logs: mate-session[20087]: WARNING: Failed to acquire org.gnome.SessionManager Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged. mate-session[20087]: Gtk-CRITICAL: gtk_main_quit: assertion 'main_loops != NULL' failed mate-session[20087]: WARNING: keycode1 not existent mate-session[20087]: WARNING: keycode2 not existent mate-session[20087]: WARNING: GSIdleMonitor: IDLETIME counter not found mate-session[20087]: GLib-GObject-CRITICAL: object GSIdleMonitor 0x56509ee55210 finalized while still in-construction mate-session[20087]: GLib-GObject-CRITICAL: Custom constructor for class GSIdleMonitor returned NULL (which is invalid). Please use GInitable instead. ** (mate-settings-daemon:20336): WARNING **: Failed to acquire org.mate.SettingsDaemon ** (mate-settings-daemon:20336): WARNING **: Could not acquire name Cannot register the panel shell: there is already one running. vmware-user: could not open /proc/fs/vmblock/dev ** (mate-screensaver:20367): WARNING **: screensaver already running in this session SELinux Troubleshooter: Applet requires SELinux be enabled to run. *** ERROR *** TI:07:55:25 TH:0x55ca34e51a60 FI:gpm-manager.c FN:gpm_manager_systemd_inhibit,1784 - Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied Traceback: mate-power-manager(+0x1902f) [0x55ca34b7002f] mate-power-manager(+0x1187e) [0x55ca34b6887e] /lib64/libgobject-2.0.so.0(g_type_create_instance+0x20b) [0x7fb6e807c7fb] /lib64/libgobject-2.0.so.0(+0x1469b) [0x7fb6e805e69b] /lib64/libgobject-2.0.so.0(g_object_newv+0x1dd) [0x7fb6e80600ad] /lib64/libgobject-2.0.so.0(g_object_new+0x104) [0x7fb6e8060864] mate-power-manager(+0x12102) [0x55ca34b69102] mate-power-manager(+0x7c52) [0x55ca34b5ec52] /lib64/libc.so.6(__libc_start_main+0xf1) [0x7fb6e746a401] mate-power-manager(+0x7fca) [0x55ca34b5efca] ** (mate-volume-control-applet:20416): WARNING **: Applet is already running, exiting ** (zeitgeist-datahub:20387): WARNING **: zeitgeist-datahub.vala:226: Unable to get name "org.gnome.zeitgeist.datahub" on the bus! Connection failure: Connection terminated Can't open RFKILL control device: No such file or directory Traceback (most recent call last): File "/usr/lib/blueberry/blueberry-obex-agent.py", line 720, in <module> service.load() File "/usr/lib/blueberry/blueberry-obex-agent.py", line 332, in load self._manager = Manager() File "/usr/lib/blueberry/blueberry-obex-agent.py", line 577, in __init__ if self.__class__.get_interface_version()[0] < 5: File "/usr/lib/blueberry/blueberry-obex-agent.py", line 446, in get_interface_version obj = dbus.SessionBus().get_object('org.bluez.obex', '/') File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 241, in get_object follow_name_owner_changes=follow_name_owner_changes) File "/usr/lib64/python2.7/site-packages/dbus/proxies.py", line 248, in __init__ self._named_service = conn.activate_name_owner(bus_name) File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 180, in activate_name_owner self.start_service_by_name(bus_name) File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 278, in start_service_by_name 'su', (bus_name, flags))) File "/usr/lib64/python2.7/site-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.systemd1.NoSuchUnit: Unit dbus-org.bluez.obex.service not found. Exception AttributeError: "'Manager' object has no attribute '_Base__signals'" in <bound method Manager.__del__ of <__main__.Manager object at 0x7f2ce57fc0a0 (uninitialized at 0x(nil))>> ignored ERROR:dbus.proxies:Introspect error on org.bluez.obex:/: dbus.exceptions.DBusException: org.freedesktop.systemd1.NoSuchUnit: Unit dbus-org.bluez.obex.service not found. abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.979 was not provided by any .service files abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying mate-session[20087]: WARNING: Child process 29443 was already dead. mate-session[20087]: WARNING: Child process 30408 was already dead. mate-session[20087]: WARNING: Child process 32062 was already dead. mate-session[20087]: WARNING: Child process 909 was already dead. mate-session[20087]: WARNING: Child process 2927 was already dead. mate-session[20087]: WARNING: Child process 3261 was already dead. mate-session[20087]: WARNING: Child process 7274 was already dead. mate-session[20087]: GLib-WARNING: GError set over the top of a previous GError or uninitialized memory. This indicates a bug in someone's code. You must ensure an error is NULL before it's set. The overwriting error message was: Unable to start application: Failed to execute child process "caja" (Remote I/O error) mate-session[20087]: WARNING: Error on restarting session managed app: (null) mate-session[20087]: ******************* START ******************************** mate-session[20087]: Frame 0: mate-session(+0x1a033) [0x56509d71c033] mate-session[20087]: Frame 1: mate-session(+0x1a222) [0x56509d71c222] mate-session[20087]: Frame 2: /lib64/libc.so.6(+0x35990) [0x7f6babcec990] mate-session[20087]: Frame 3: /lib64/libglib-2.0.so.0(g_io_channel_unref+0x9) [0x7f6bac0b9ae9] mate-session[20087]: Frame 4: /lib64/libglib-2.0.so.0(+0x46fde) [0x7f6bac0c3fde] mate-session[20087]: Frame 5: /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x2a0) [0x7f6bac0c6f90] mate-session[20087]: Frame 6: /lib64/libglib-2.0.so.0(+0x4a1d0) [0x7f6bac0c71d0] mate-session[20087]: Frame 7: /lib64/libglib-2.0.so.0(g_main_loop_run+0xc2) [0x7f6bac0c74f2] mate-session[20087]: Frame 8: /lib64/libgtk-3.so.0(gtk_main+0x85) [0x7f6bae0e80d5] mate-session[20087]: Frame 9: mate-session(+0xa91a) [0x56509d70c91a] mate-session[20087]: Frame 10: /lib64/libc.so.6(__libc_start_main+0xf1) [0x7f6babcd7401] mate-session[20087]: Frame 11: mate-session(+0xb12a) [0x56509d70d12a] mate-session[20087]: ******************* END ********************************** Gdk-Message: marco: Fatal IO error 104 (Connection reset by peer) on X server :71.0. from X.org log ------------ Mar 31 13:55:50 ourserver systemd-logind: New session 2270 of user localguy. Mar 31 13:55:53 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-loca lguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:55:54 ourserver /usr/bin/x2gostartagent: successfully started X2Go agent session with ID localguy-60-1490982952_stDMATE_dp32 Mar 31 13:55:55 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-localguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:55:56 ourserver /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="mate-session" Mar 31 13:55:58 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-localguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:56:02 ourserver gnome-keyring-daemon[9324]: couldn't access control socket: /run/user/1000/keyring/control: No such file or directory Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: keycode1 not existent Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: keycode2 not existent Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: GSIdleMonitor: IDLETIME counter not found Mar 31 13:56:02 ourserver mate-session[9088]: GLib-GObject-CRITICAL: object GSIdleMonitor 0x562290e3b120 finalized while still in-construction Mar 31 13:56:02 ourserver mate-session[9088]: GLib-GObject-CRITICAL: Custom constructor for class GSIdleMonitor returned NULL (which is invalid). Please use GInitable instead. Mar 31 13:56:04 ourserver kernel: marco[9335]: segfault at 0 ip 00007f30d12866a7 sp 00007fff599aa478 error 4 in libX11-xcb.so.1.0.0[7f30d1286000+1000] Mar 31 13:56:04 ourserver systemd: Started Process Core Dump (PID 9362/UID 0). Mar 31 13:56:04 ourserver systemd-coredump: Process 9335 (marco) of user 1000 dumped core.#012#012Stack trace of thread 9335:#012#0 0x00007f30d12866a7 XGetXCBConnection (libX11-xcb.so.1)#012#1 0x00007f30d826a1b2 sn_display_new (libstartup-notification-1.so.0)#012#2 0x0000558494823d9f meta_display_open (marco)#012#3 0x000055849481450a main (marco)#012#4 0x00007f30d5ee5401 __libc_start_main (libc.so.6)#012#5 0x000055849481491a _start (marco)#012#012Stack trace of thread 9347:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d736527c g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f30c6a10fad dconf_gdbus_worker_thread (libdconfsettings.so)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6)#012#012Stack trace of thread 9348:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d736527c g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f30d73652c1 glib_worker_main (libglib-2.0.so.0)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6)#012#012Stack trace of thread 9349:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d73654f2 g_main_loop_run (libglib-2.0.so.0)#012#3 0x00007f30d878ca76 gdbus_shared_thread_func (libgio-2.0.so.0)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6) Mar 31 13:56:05 ourserver kernel: marco[9369]: segfault at 0 ip 00007f430d2676a7 sp 00007ffcfd0139e8 error 4 in libX11-xcb.so.1.0.0[7f430d267000+1000] Mar 31 13:56:05 ourserver systemd: Started Process Core Dump (PID 9375/UID 0). Mar 31 13:56:05 ourserver systemd-coredump: Process 9369 (marco) of user 1000 dumped core.#012#012Stack trace of thread 9369:#012#0 0x00007f430d2676a7 XGetXCBConnection (libX11-xcb.so.1)#012#1 0x00007f431424b1b2 sn_display_new (libstartup-notification-1.so.0)#012#2 0x000055e9d68b3d9f meta_display_open (marco)#012#3 0x000055e9d68a450a main (marco)#012#4 0x00007f4311ec6401 __libc_start_main (libc.so.6)#012#5 0x000055e9d68a491a _start (marco)#012#012Stack trace of thread 9374:#012#0 0x00007f4311fa201d poll (libc.so.6)#012#1 0x00007f431471e055 g_socket_condition_timed_wait (libgio-2.0.so.0)#012#2 0x00007f431471ef7a g_socket_receive_with_timeout (libgio-2.0.so.0)#012#3 0x00007f43147049ac g_input_stream_read (libgio-2.0.so.0)#012#4 0x00007f43146dc0e2 g_buffered_input_stream_real_fill (libgio-2.0.so.0)#012#5 0x00007f43146dcde4 g_buffered_input_stream_fill (libgio-2.0.so.0)#012#6 0x00007f43146e406e g_data_input_stream_read_line (libgio-2.0.so.0)#012#7 0x00007f4314752575 _my_g_data_input_stream_read_line (libgio-2.0.so.0)#012#8 0x00007f4314752acc _g_dbus_auth_run_client (libgio-2.0.so.0)#012#9 0x00007f43147621b6 initable_init (libgio-2.0.so.0)#012#10 0x00007f43147628e1 g_bus_get_sync (libgio-2.0.so.0)#012#11 0x00007f43029f1d98 dconf_gdbus_get_bus_in_worker (libdconfsettings.so)#012#12 0x00007f43029f1e7a dconf_gdbus_method_call (libdconfsettings.so)#012#13 0x00007f43133428e7 g_idle_dispatch (libglib-2.0.so.0)#012#14 0x00007f4313345e52 g_main_context_dispatch (libglib-2.0.so.0)#012#15 0x00007f43133461d0 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#16 0x00007f431334627c g_main_context_iteration (libglib-2.0.so.0)#012#17 0x00007f43029f1fad dconf_gdbus_worker_thread (libdconfsettings.so)#012#18 0x00007f431336db93 g_thread_proxy (libglib-2.0.so.0)#012#19 0x00007f43114646ca start_thread (libpthread.so.0)#012#20 0x00007f4311fadf7f __clone (libc.so.6) Mar 31 13:56:07 ourserver dbus-daemon[12493]: [session uid=1000 pid=12493] Activating service name='org.mate.panel.applet.WnckletFactory' requested by ':1.110' (uid=1000 pid=9361 comm="mate-panel ") Mar 31 13:56:07 ourserver journal: unable to create file '/run/user/1201/dconf/user': Permission denied. dconf will not work properly.

1 0

suppress GUI dialog when calling x2goclient --version from subshell
by Seth Galitzer 27 Mar '17

27 Mar '17

I'd like to be able to capture the version of x2goclient in a script and report it back to the user externally. Use case for this would be an external info dialog when running x2goclient in a thin client environment. Bash script would look something like this: #!/bin/bash VER=$(x2goclient --version) echo Your version is $VER The client generates lots of additional info and warning messages to stderr, which I can suppress using grep -v. I can get a clean version number if I call it standalone on the cli: $ x2goclient --version 2>&1 | grep -v x2go When I do this, however, I get "Terminated" added to the output. But as soon as I try to capture the output in a subshell per the first snippet, the client can't get the tty and so opens the GUI About dialog. I've tried using the --hide option, but this doesn't help. I would like to just be able to invoke the client and get just the version number with no additional output. I could just query the OS package manager to get the installed version, but this doesn't give an accurate result if I'm running from a binary I've compiled from source. I'm working on hacking the code to get the result I want, but wonder if there is an easier solution. Any suggestion? Please let me know. Thanks. Seth -- Seth Galitzer Systems Coordinator Computing and Information Sciences Kansas State University http://www.cis.ksu.edu/~sgsax sgsax(a)ksu.edu 785-532-7790

1 0

Frozen x2go session
by Thackeray, Neil L 27 Mar '17

27 Mar '17

I have a user with a frozen x2go session. In the logs I get the following message for the users session: usr/bin/x2gosetkeyboard: Waiting for /home/username/.x2go/C-username-50-1490056089_stDKDE_dp32/keyboard to appear. I'm thinking this might be the problem, but does anyone have any experience with this? I'm thinking I may have to terminate their session, which isn't great since they were crunching data for research. The server version is: x2goagent: 3.5.0.32 x2goserver: 4.0.1.20 x2goserver-extensions: 4.0.1.20 x2goserver-fmbindings: 4.0.1.20 x2goserver-printing: 4.0.1.20 x2goserver-xsession: 4.0.1.20 This is all running on RHEL 6.8. I don't know which client version the user has.

2 1

StrictHostKeyChecking=no
by Ivan Gomez 26 Mar '17

26 Mar '17

Hello, Is there a way to disable Strict Host Key Checking on X2Go client for windows? Thank you, Ivan G.

3 7

Python3-x2go
by brian town 26 Mar '17

26 Mar '17

Is there any port of the python-x2go to be useable by Python3?

4 23

X2 Go Client Android Project?
by Bernard Free 26 Mar '17

26 Mar '17

Hello, I have a question, is there a development planned for an X2go Android client? thank you for your attention Bernard

6 8

Problems reconnecting
by Michael Eager 24 Mar '17

24 Mar '17

I'm using x2goclient v 4.0.5.2 on a Fedora 24 system connecting to a Centos 7 system. When I stop the client and attempt to reconnect, a window pops up saying that there are two sessions, one suspended and one running. If I click on the running session, the client appears to negotiate a connection but does not open a window. Instead it hangs and I have to kill the client. When I run the client again, I see the same two sessions. If I click on the suspended session, it also hangs, but the next time I run the client, both sessions are listed as running. If I select either session and click on terminate, the pop-up window updates to remove the session, but I can't connect. When I restart the client again, both sessions are still there, listed as running. Any suggestions? -- Michael Eager eager(a)eagercon.com 1960 Park Blvd., Palo Alto, CA 94306 650-325-8077

1 1

Continuing issue with resuming session on Windows Client
by Bragg, Richard 23 Mar '17

23 Mar '17

Client : 4.1.0.0 (Qt - 4.8.6) Want to run in full screen but that screen may change on location but issue is that I can start new session fine but resume always goes into a window. If I use Process Explorer I see the vcxsrv process On initial session parameters are as expected -nodecoration -notrayicon -clipboard -screen 0 @.... On resume I see (integrated X) - -multiwindow -notrayicon -clipboard (custom X - vcxsrv) - -screen 0 %wx%h -notrayicon -clipboard Any ideas? Richard Bragg MBCS| Application Analyst | Enterprise Monitoring and Automation | Technology and transformation Virgin Media | Unit C, Wellington Gate, Silverthorne Way, PORTSMOUTH, Hampshire, PO7 7XY M +447967046983 | D +443703 900110 | I 7806402 | E richard.bragg(a)virginmedia.co.uk<mailto:richard.bragg@virginmedia.co.uk> jive profile https://jive.systems.private/people/B0001850 | netcool community https://jive.systems.private/groups/netcool -------------------------------------------------------------------- Save Paper - Do you really need to print this e-mail? Visit www.virginmedia.com for more information, and more fun. This email and any attachments are or may be confidential and legally privileged and are sent solely for the attention of the addressee(s). Virgin Media will never ask for account or financial information via email. If you are in receipt of a suspicious email, please report to www.virginmedia.com/netreport If you have received this email in error, please delete it from your system: its use, disclosure or copying is unauthorised. Statements and opinions expressed in this email may not represent those of Virgin Media. Any representations or commitments in this email are subject to contract. Registered office: Media House, Bartley Wood Business Park, Hook, Hampshire, RG27 9UP Registered in England and Wales with number 2591237

1 0

multiwindow option and resizing an application window
by Dionne, Dennis P 09 Mar '17

09 Mar '17

Hello, I am using X2Go on RHEL 6.7 and I am very pleased with how well it works but I am having an issue when using X2Go with a custom application when I resize the application window. There are hundreds of other applications on our system that have no issue with resizing, it' just this one. This will happen every time I resize the app IF AND ONLY IF I start vcxsrv with "-multiwindow", if I start it any other way (-rootless, -fullscreen, -multimonitor) the app will resize fine. The problem is I then cannot resize the session window (resizing is only available in multiwindow mode apparently?). I am 100% aware that the application in question is at fault, however, it is very old, was produced by another company that will not give me the code and refuses to update it... I am also aware that this may be a VCXSrv issue and I can ask them as well but I was wondering if you all had run across something like this before. If you could give me some background on the differences between multiwindow vs "non-multiwindow" or could explain why multiwindow would fail I'd appreciate it. That may be a question for VCXSrv though. Setup: RHEL 6.7 X2Go Windows Client 4.0.5.1 (Windows 7 64bit) Server 4.0.1.19 Gnome 2.28 Thanks Dennis

3 7

Can't resume sessions on CentOS 7
by h i 07 Mar '17

07 Mar '17

Hello, We've had issues resuming suspended sessions. We connect to a linux server from different client machines (PC and Mac) using x2go. For some reason, after suspending sessions, we cannot resume sessions. We receive messages such as: X2Go-52 The remote proxy closed the connection while negotiating the session. This may be due to the wrong authentication credentials passed to the server. or Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/<https://umail.umaryland.edu/owa/redir.aspx?C=WiEk1KdXvbDNgUFiMIUhnXCARdz6hK…> for more information. Info: Proxy running in client mode with pid '8xxx'. Session: Starting session at 'Tue Jan 24 11:17:00 2017'. Info: Connecting to remote host 'localhost:xxxxx'. Info: Connection to remote proxy 'localhost:xxxx' established. Info: Connection with remote proxy completed. Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Warning: Failed to read data from the X auth command. Warning: Generated a fake cookie for X authentication. Info: Using LAN link parameters xxx/24/1/0. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_32'. Info: Not using NX delta compression. Info: Not using ZLIB data compression. Info: Not using ZLIB stream compression. Info: Not using a persistent cache. Info: Forwarding X11 connections to display 'localhost:0'. Session: Session started at 'Tue Jan 24 11:17:00 2017'. Warning: Cookie mismatch in the X authentication data. Session: Terminating session at 'Tue Jan 24 11:17:05 2017'. Info: Your session was closed before reaching a usable state. Info: This can be due to the local X server refusing access to the client. Info: Please check authorization provided by the remote X application. Session: Session terminated at 'Tue Jan 24 11:17:05 2017'. Connection timeout, aborting NXPROXY - Version 3.5.0 Or The only way to resolve this problem is using the following two commands on the server: rm -rf /tmp/.x2go-username/ rm -rf ~/.x2go/C-username-* After 2 attempts, we can log into the server using x2go, but a new session is started. The previous open session is terminated. Is there a reason why this is happening? Is there an option to select during installation/configuration to prevent these resume problems? Any help would greatly be appreciated.

1 0

X2Go on Mac with MATE and NIS/Fedora 25 closes after opening
by Robert Kudyba 07 Mar '17

07 Mar '17

We made sure to downgrade mesa but this happens with certain NIS users. Non-NIS users do not have this problem. Here are some logs. Mar 7 08:48:56 ourhost /usr/bin/x2gostartagent: x2gostartagent called with options: 800x600 adsl 16m-jpeg-9 unix-kde-depth_32 us query 0 D MATE both Mar 7 08:48:56 ourhost /usr/bin/x2gosessionlimit[30463]: x2gosessionlimit has been called Mar 7 08:48:56 ourhost /usr/bin/x2golistsessions[30466]: x2golistsessions has been called with options: --all-servers Mar 7 08:48:58 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:48:58 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:48:58 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-start Mar 7 08:48:58 ourhost /usr/bin/x2gostartagent: successfully started X2Go agent session with ID hostname-61-1488894536_stDMATE_dp32 Mar 7 08:48:58 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:48:58 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:48:58 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 post-start Mar 7 08:48:58 ourhost dnf: Metadata cache created. Mar 7 08:48:58 ourhost /usr/bin/x2gostartagent: blocking creation of agent's keyboard file /tmp/.x2go-hostname/C-hostname-61-1488894536_stDMATE_dp32/keyboard as requested by session startup command Mar 7 08:48:58 ourhost systemd: Started dnf makecache. Mar 7 08:49:03 ourhost /usr/bin/x2gocmdexitmessage: x2gocmdexitmessage called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:49:20 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:49:21 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:49:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:21 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:49:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:49:21 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:49:21 ourhost /usr/bin/x2goumount-session[31047]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:49:41 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:49:41 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:49:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:49:41 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:49:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:49:41 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:49:41 ourhost /usr/bin/x2goumount-session[31286]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:00 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:01 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:50:01 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:01 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:01 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:01 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:01 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:01 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:50:01 ourhost /usr/bin/x2goumount-session[31537]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:20 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:21 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:50:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:21 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:21 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:21 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:50:21 ourhost /usr/bin/x2goumount-session[31776]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:40 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:50:40 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:50:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:50:41 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:41 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:50:41 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:50:41 ourhost /usr/bin/x2goumount-session[32016]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:51:00 ourhost /usr/bin/x2gosuspend-session: x2gosuspend-session called with options: hostname-61-1488894536_stDMATE_dp32 Mar 7 08:51:00 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_DESKTOPSHARING Mar 7 08:51:00 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_DESKTOPSHARING Mar 7 08:51:00 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-xsession.features: x2goserver-xsession.features called with options: X2GO_DESKTOPSHARING Mar 7 08:51:00 ourhost /usr/share/x2go/x2gofeature.d/x2goserver.features: x2goserver.features called with options: X2GO_DESKTOPSHARING Mar 7 08:51:00 ourhost /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Mar 7 08:51:01 ourhost /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Mar 7 08:51:01 ourhost /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: hostname-61-1488894536_stDMATE_dp32 pre-suspend Mar 7 08:51:01 ourhost /usr/bin/x2goumount-session[32256]: x2goumount-session has been called with options: hostname-61-1488894536_stDMATE_dp32 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '30953'. Session: Starting session at 'Tue Mar 7 08:48:58 2017'. Info: Connecting to remote host 'localhost:62357'. Info: Connection to remote proxy 'localhost:62357' established. Info: Connection with remote proxy completed. Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Warning: Failed to read data from the X auth command. Warning: Generated a fake cookie for X authentication. Info: Using ADSL link parameters 512/24/1/0. Info: Using cache parameters 4/4096KB/8192KB/8192KB. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_32'. Info: Using ZLIB data compression 1/1/32. Info: Using ZLIB stream compression 4/4. Info: No suitable cache file found. Info: Forwarding X11 connections to display '/private/tmp/com.apple.launchd.KQ3HYr1H3E/org.macosforge.xquartz:0'. Session: Session started at 'Tue Mar 7 08:49:00 2017'. Warning: Protocol mismatch or no X authentication data. Session: Terminating session at 'Tue Mar 7 08:49:03 2017'. Info: Your session was closed before reaching a usable state. Info: This can be due to the local X server refusing access to the client. Info: Please check authorization provided by the remote X application. Session: Session terminated at 'Tue Mar 7 08:49:03 2017'. Connection timeout, aborting

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Re: [X2Go-User] High performance OpenGL issues : fixed
by Robert GRASSO 07 Mar '17

07 Mar '17

Yes, sure. First, keep in mind that I am a sysadmin, I don't know a thing about graphic programming. It all began, fortunately, as we have one RHEL 6 virtual machine, and a RHEL 6 physical machine with an NVidia card. So, strangely, this software worked perfectly in the virtual machine, not only with the display in X2go, but on the console too ! The ESX does NOT have an NVidia card, it is a basic display for servers ! I would not have expected this ? So I began digging, using strace on my machines, reading your pages, searching with Google. An interesting test was the following : I initiated an X2go connection on the virtual machine, then from a terminal in this connection, I connected to the virtual machine through ssh -X : and from within this connection, I started the software on the vm, but with its display redirected on the X2go display of the physical machine : and it worked perfectly : this meant that the graphic driver on the machine where the software is run is not involved at all ! it would have to be some specific library involved in OpenGL. Then I figured out that on the VM alone, the software uses the stock "mesa" libGL.so. I found on some page on the web that a good test to see which libGL.so was used was to run ldd /usr/bin/glxinfo Then I looked at the postinstall script of the NVidia driver provided by ELrepo : I saw ldconfig ! This is how the NVidia libGL.so is provided to OpenGl applications ! And I must have seen somewhere else the tip about LD_LIBRARY_PATH : which worked perfectly with ldd /usr/bin/glxinfo But my software was still failing : why ? Actually, this software is complex, it starts opening a graphic console, from which the real utilities are started : this console is buggy, it does not provide the user's environment to the utilities it starts : this is what got me confused in a first time, I did not know it was buggy, I had to figure it out : so I dug deeper, found the utilities' rc file, figured out how to change LD_LIBRARY_PATH inside the rc file, and I was done ! So to us, the fix is "just" to add at the beginning of LD_LIBRARY_PATH : /usr/lib64, so that it is libGL.so from mesa-libGL-devel which is used for the OpenGL calls, and not the NVidia one, which is registered in the OS by ldconfig. And then, fix the other bugs which get in the way ;-) I hope I have been clear enough ? Robert Grasso | System engineer T +33 (0)4 56 38 08 33 | F +33 (0)4 56 38 08 30 rgrasso(a)altair.com | www.altair.com Altair | Innovation Intelligence ® > -----Original Message----- > From: ulrich.sibiller(a)gmail.com [mailto:ulrich.sibiller@gmail.com] On Behalf Of Ulrich Sibiller > Sent: Monday, March 06, 2017 7:00 PM > To: Robert GRASSO > Subject: Re: [X2Go-User] High performance OpenGL issues : fixed > > On Mon, Mar 6, 2017 at 5:53 PM, Robert GRASSO <rgrasso(a)altair.com> wrote: > > Apologies, fix found. > > > > > > > > Please dismiss this question > > > Can you please give us information about the fix? It may help others... > > Uli

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Utility for cleaning x2go sessions
by Norman Gaywood 07 Mar '17

07 Mar '17

I can have 50-60 users logged on via x2go. Sometimes I need to logout many users. I use the following utility to list and match x2go sessions. Using the -r switch will run x2goterminate-session against the matched sessions. Others may find this useful, so I post my script here. Running the script without arguments will simply list all x2go sessions. The -h switch will show usage. I've attached the file but I suspect that will it be lost in the mailing list archives. Since it's short I also cut and paste here: ------------------------------ cut ------------------------------ #!/usr/bin/perl # List (and terminate) x2go sessions use strict; use warnings; use v5.10; use Getopt::Std; my %opts; getopts('hjqr', \%opts); my $help = defined $opts{h} ? $opts{h} : 0; my $printjob = defined $opts{j} ? $opts{j} : 0; my $quite = defined $opts{q} ? $opts{q} : 0; my $run = defined $opts{r} ? $opts{r} : 0; my $x2goterminate = '/usr/bin/x2goterminate-session'; my $x2golistsessions = '/usr/sbin/x2golistsessions_root'; if ($help) { print STDERR <<EOT; Usage: $0 [-hjqr] [[pattern] .. pattern] Runs $x2golistsessions and outputs in a more readable format Only print x2go sessions that match the pattern[s] If no pattern is given, lists all x2go sessions -h This message -j print job command to terminate matched sessions, not session information -q quite, don't print anything -r Terminate the matched sessions with $x2goterminate EOT exit 1; } # $x2golistsessions lists sessions like this: #456|user-122-1460160892_stDXFCE_dp32|122|host.com |R|2016-04-09T10:14:52|cba4aa51a29c4b7e2d529e6f628245eb|123.456.789.012|30259|30261|2016-04-09T10:14:56|user|1125|30262| # 0 1 2 3 4 5 6 7 8 9 10 11 12 13 # # These are the fields that we print (@pretty) and/or we match against my @pretty = (4,5,7,1); # # The sessionID field required for $x2goterminate my $sessionID = 1; # Results sorted by time my $sessionTime = 5; # Generate the string we print and match against sub pretty { my $s = shift; return "" unless defined $s; # (ref to) array of session fields return sprintf "%s %s %-16s %s", @{$s}[@pretty]; } # Get the session list and split the fields in each session my $sessions = qx( $x2golistsessions ); my @sessions = (); for my $s (split /\n/, $sessions) { push @sessions, [ split '\|', $s ]; } # If no command line patterns, match all sessions unless (@ARGV) { @ARGV = ( '.' ); } # patten match on the session information my %tokill; # sessions to kill/display for my $p (@ARGV) { my @tokill = grep { grep /$p/, pretty($_) } @sessions; # convert to hash to eliminate duplicates over multiple @ARGV for my $s (@tokill) { $tokill{$s->[$sessionID]} = $s; } } # pretty = session information that patterns are matched against # job = command that would execute to terminate session for my $s (sort {$a->[$sessionTime] cmp $b->[$sessionTime]} values %tokill) { my $pretty = pretty($s); my $job = sprintf "%s %s", $x2goterminate, $s->[$sessionID]; unless ($quite) { say $printjob ? $job : $pretty; } system $job if $run; } -- Norman Gaywood, Computer Systems Officer School of Science and Technology University of New England Armidale NSW 2351, Australia ngaywood(a)une.edu.au http://turing.une.edu.au/~ngaywood Phone: +61 (0)2 6773 2412 Mobile: +61 (0)4 7862 0062 Please avoid sending me Word or Power Point attachments. See http://www.gnu.org/philosophy/no-word-attachments.html

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High performance OpenGL issues
by Robert GRASSO 06 Mar '17

06 Mar '17

Hello, I am trying to have high-performance OpenGL graphics in X2go, from a modeling software : it is based on Jogl; for instance, you can rotate objects in the GUI. I am having issues. I am using : - X2go client 4.0.5.1 on Windows 7 - X2go server v 4.0.1 on RHEL 6 with KDE When I start the software on a physical machine with RHEL 6 and an updated NVIdia driver, on the physical screen, it works perfectly. When I start the software on the physical machine but with the display in the X2go client, the software crashes almost immediately Strangely, when I start the software on a virtual machine running RHEL 6 inside Vsphere, with the display either in the console or X2go, it works perfectly. So I assume that it may be related to other libraries brought in by the driver. I already figured out that I can work around the libGL.so from NVidia, if I add to the environment : export LD_LIBRARY_PATH=/usr/lib64 In this way, the software uses the system's libGL.so, I can see it with ldd /usr/bin/glxinfo Unfortunately, this is not sufficient. Does anybody have a solution ? or a hint ? Best regards R. Grasso

2 2

High performance OpenGL issues : fixed
by Robert GRASSO 06 Mar '17

06 Mar '17

Apologies, fix found. Please dismiss this question ********************************************************************************************* Hello, I am trying to have high-performance OpenGL graphics in X2go, from a modeling software : it is based on Jogl; for instance, you can rotate objects in the GUI. I am having issues. I am using : - X2go client 4.0.5.1 on Windows 7 - X2go server v 4.0.1 on RHEL 6 with KDE When I start the software on a physical machine with RHEL 6 and an updated NVIdia driver, on the physical screen, it works perfectly. When I start the software on the physical machine but with the display in the X2go client, the software crashes almost immediately Strangely, when I start the software on a virtual machine running RHEL 6 inside Vsphere, with the display either in the console or X2go, it works perfectly. So I assume that it may be related to other libraries brought in by the driver. I already figured out that I can work around the libGL.so from NVidia, if I add to the environment : export LD_LIBRARY_PATH=/usr/lib64 In this way, the software uses the system's libGL.so, I can see it with ldd /usr/bin/glxinfo Unfortunately, this is not sufficient. Does anybody have a solution ? or a hint ? Best regards R. Grasso

1 0

libnx
by Robert Dinse 03 Mar '17

03 Mar '17

For what it's worth, nx libs version 3.5.99.3 appear to be a significant improvement over 3.5.99.2, at least the machines with the 3.5.99.3 haven't exploded on me while I'm using them yet. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.

4 10

Downtime today: packages.x2go.org (and git., bugs., code., lists. alike)
by Mike Gabriel 02 Mar '17

02 Mar '17

Hi all, due to some luck, I have time today to upgrade the machine hosting diverse X2Go and Arctica services (aka ymir.das-netzwerkteam.de) to a recent Linux OS and also move the machine (a VM) to a newer virtualization host. So expect availability to be sort-of wobbly today. Affected services: lists.x2go.org packages.x2go.org packages.arctica-project.org bugs.x2go.org git.x2go.org code.x2go.org light+love, Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby mobile: +49 (1520) 1976 148 landline: +49 (4354) 8390 139 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de

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Re: [X2Go-User] x2goclient & pyhoca-gui both fail to start
by nanook＠eskimo.com 02 Mar '17

02 Mar '17

I am using 4.8 kernel so not a kernel issue. Error sounds more like a python issue. Sent from my Verizon 4G LTE Tablet ------ Original message------From: brian mullanDate: Wed, Mar 1, 2017 3:13 PMTo: x2go-user(a)lists.x2go.org;Cc: Subject:[X2Go-User] x2goclient & pyhoca-gui both fail to start I am not sure how to troubleshoot this. I haven't used x2goclient for a couple weeks and it was working. note: Recently I upgraded my Ubuntu 16.04 to the new 4.8 kernel (which may or may not be related to this but thought I'd mention it). Today I've tried to start x2goclient several times and the process starts but the x2goclient gui interface doesn't appear. Any suggestions about what to look at to try to determine why it fails? I tried pyhoca-gui also and it too fails with the following: $ pyhoca-gui /usr/lib/python2.7/dist-packages/gevent/builtins.py:93: PyGIWarning: Notify was imported without specifying a version first. Use gi.require_version('Notify', '0.7') before import to ensure that the right version gets loaded. result = _import(*args, **kwargs) pyhoca-gui[8232] (PyHoca-GUI) WARN: the current release of PyHoca-GUI does not support client configuration Again not sure what the above means Brian

3 2

Re: [X2Go-User] x2goclient & pyhoca-gui both fail to start
by nanook＠eskimo.com 02 Mar '17

02 Mar '17

I am using 4.8 kernel under Ubuntu 16.10 on both.client and server but also using nightly builds and 3.5.99 2nd libs and it is working so not a kernel issue at least by itself.Sent from my Verizon 4G LTE Tablet ------ Original message------From: Stefan BaurDate: Wed, Mar 1, 2017 3:34 PMTo: x2go-user(a)lists.x2go.org;Cc: Subject:Re: [X2Go-User] x2goclient & pyhoca-gui both fail to start Am 02.03.2017 um 00:12 schrieb brian mullan:> I am not sure how to troubleshoot this.> > I haven't used x2goclient for a couple weeks and it was working.> > /*note:* Recently I upgraded my Ubuntu 16.04 to the new 4.8 kernel> (which may or may not be related to this but thought I'd mention it)./> > Today I've tried to start x2goclient several times and the process> starts but the x2goclient gui interface doesn't appear.> > Any suggestions about what to look at to try to determine why it fails?Open a console window, runx2goclient --debug 2>&1 | tee x2godebugloglook at the output, if anything looks odd, post the corresponding logsnippet.Also, Ubuntu should have/var/log/dpkg.log/var/log/apt/history.log- these should show you which packages got upgraded lately.-Stefan-- BAUR-ITCS UG (haftungsbeschränkt)Geschäftsführer: Stefan BaurEichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243_________________________________________ ______x2go-user mailing listx2go-user@lists.x2go.orghttp://lists.x2go.org/listinfo/x2go-user

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