x2go-user August 2018

x2go-user@lists.x2go.org

17 participants
20 discussions

Problem with x2go - the connection with the remote server was shut down
by Brian Lam 25 Aug '18

25 Aug '18

Hello, I have been having intermittent problems with getting into x2go on RH6 machine. Recently, after update of x2go server and client, I am not having any success in connecting. I saw the same message before but I was able to connect after I tried multiple times (usually success rate about 10%). The message is - *X2Go - 52* *The connection with the remove server was shut down. Please check the state of your network connections.* I updated x2go server with version *4.1.0.0 *using yum Updated x2goserver-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel Update 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel Updated x2goserver-common-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel Update 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel Updated x2goserver-extensions-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel Update 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel Updated x2goserver-x2goagent-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel Update 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel Updated x2goserver-xsession-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel Update 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel The client is running on Windows 10. Version is* 4.1.2.0.* The windows pop up for 1 or 2 seconds before closing with the error message. In my home directory, I see a dumped core.* and .xsessions error > more .xsession-x2go-pleth01.plethrontech.com-errors XSession-x2go: X session started for eminami at Thu Aug 23 12:39:34 EDT 2018 ** (gnome-session:12939): WARNING **: Cannot open display: In my /var/log/messages - Aug 23 12:39:31 pleth01 /usr/bin/x2gostartagent: successfully started X2Go Agent session with ID eminami-52-1535042370_stDGNOME_dp32 Aug 23 12:39:34 pleth01 /usr/bin/x2goserver-run-extensions: /usr/lib64/x2go/extensions/pre-runcommand.d/005_GNOME-monitors-xml-ignore (x2goserver-run-extensions) for session eminami-52-1535042370_stDGNOME_dp32 returned a non-zero exit code, continuing... Aug 23 12:39:34 pleth01 /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="/usr/bin/gnome-session" Aug 23 12:39:34 pleth01 /usr/bin/x2goruncommand: dbus wrapper available as /bin/dbus-run-session Aug 23 12:39:37 pleth01 /usr/bin/x2gosetkeyboard: Setting X keyboard according to /home/eminami/.x2go/C-eminami-52-1535042370_stDGNOME_dp32/keyboard Aug 23 12:39:39 pleth01 abrt[12896]: Saved core dump of pid 12432 (/usr/bin/nxagent) to /var/spool/abrt/ccpp-2018-08-23-12:39:38-12432 (11898880 bytes) Aug 23 12:39:39 pleth01 abrtd: Directory 'ccpp-2018-08-23-12:39:38-12432' creation detected Aug 23 12:39:39 pleth01 abrtd: Package 'nxagent' isn't signed with proper key Aug 23 12:39:39 pleth01 abrtd: 'post-create' on '/var/spool/abrt/ccpp-2018-08-23-12:39:38-12432' exited with 1 Aug 23 12:39:39 pleth01 abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2018-08-23-12:39:38-12432' The Linux server (remote headless server) - > cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.10 (Santiago) > uname -a Linux blam01.blamtech.com 2.6.32-754.el6.x86_64 #1 SMP Thu May 24 18:18:25 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux I can login to the server using putty with ssh connection. Any suggetions/help will be greatly appreciated. Thanks.

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Problem installing x2go on RHEL6
by Brian Lam 24 Aug '18

24 Aug '18

I am having problems with x2go so after going through a number of suggestions and running deeper into a hole, I decided to remove and reinstall. I removed using yum yum remove x2goserver yum remove x2goserver-session I see that x2go rpm are available when I run "yum search x2go". However, when I try to install, I get error downloading packages. *Any suggestions appreciated. Thanks!* yum install x2goserver <...> Dependencies Resolved ====================================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================================== Installing: x2goserver x86_64 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6 x2go-release-epel 102 k Installing for dependencies: x2goserver-extensions x86_64 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6 x2go-release-epel 43 k x2goserver-xsession x86_64 4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6 x2go-release-epel 42 k Transaction Summary ====================================================================================================================================================================== Install 3 Package(s) Total download size: 187 k Installed size: 607 k Is this ok [y/N]: y Downloading Packages: http://packages.x2go.org/epel/6Server/main/x86_64/rpms/x2goserver/x2goserve…: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'packages.x2go.org'" Trying other mirror. http://packages.x2go.org/epel/6Server/main/x86_64/rpms/x2goserver/x2goserve…: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'packages.x2go.org'" Trying other mirror. http://packages.x2go.org/epel/6Server/main/x86_64/rpms/x2goserver/x2goserve…: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'packages.x2go.org'" Trying other mirror. Error Downloading Packages: x2goserver-extensions-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64: failure: rpms/x2goserver/x2goserver-extensions-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64.rpm from x2go-release-epel: [Errno 256] No more mirrors to try. x2goserver-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64: failure: rpms/x2goserver/x2goserver-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64.rpm from x2go-release-epel: [Errno 256] No more mirrors to try. x2goserver-xsession-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64: failure: rpms/x2goserver/x2goserver-xsession-4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64.rpm from x2go-release-epel: [Errno 256] No more mirrors to try.

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Log-in problem after NVIDIA card update
by Alec Bayo 20 Aug '18

20 Aug '18

Hi all, Asking for help please troubleshooting an issue with x2go. Inbound connections stopped working after I updated the kernel and nvidia drivers on my centos workstation (the x2go server). On the client, the error message says "Connection failed. Failed to start X2Go Agent session with ID account-_____. X2Go Agent terminated unexpectedly. Aborting session startup." [If I attempt a connecion again the client shows a previous apparently pre-existing connection, but I cannot resume it.] On the server, the session log says "Error: Aborting session with 'Unable to open display 'nx/nx,options=...". I have attempted uninstalling and reinstalling x2goserver from epel. This symptoms are similar to an issue Mihai Moldovan resolved for Qianqian Fang in April: https://www.mail-archive.com/x2go-user@lists.x2go.org/msg02809.html However, I do not have the offending line set in LD_LIBRARY_PATH which solved the issue for Qianqian. #Contents of LD_LIBRARY_PATH (this is from env after ssh-in). LD_LIBRARY_PATH=/usr/local/cuda/lib64:/home/[...]/caffe/distribute/lib/::/usr/lib:/usr/lib/python2.7 I also attempted commenting out this setting from .bashrc, and that did not fix it. I've copied below answers to some questions Mihai asked Qianqian. The only strange thing I noticed is that Mihai asked for the contents of /usr/lib64/nx/X11 , and this is empty. The library Qianqian listed in there is located at /usr/lib64 on my server. Some more details below, answering questions that were made on this earlier, similar troubleshooting request. Best regards, thanks for any help, Ale # Please make sure that nx-libs 3.5.99.16 is installed on the server side: Package nx-libs-3.5.99.16-1.el7.x86_64 already installed and latest version # Client up to date: x2goclient is already the newest version (4.1.1.1-2). # Perhaps this is useful, these lines are also from env: QTDIR=/usr/lib64/qt-3.3 QTINC=/usr/lib64/qt-3.3/include SSH_TTY=/dev/pts/1 QT_GRAPHICSSYSTEM_CHECKED=1 QTLIB=/usr/lib64/qt-3.3/lib QT_PLUGIN_PATH=/usr/lib64/kde4/plugins:/usr/lib/kde4/plugins # Contents of /usr/lib64/nx/X11 $ ls /usr/lib64/nx bin X11 $ ls -lah /usr/lib64/nx/X11 total 0 drwxr-xr-x. 2 root root 6 Aug 18 14:28 . drwxr-xr-x. 4 root root 26 Aug 18 14:28 .. $ ls -lah /usr/lib64/nx/bin total 0 drwxr-xr-x. 2 root root 36 Aug 17 21:28 . drwxr-xr-x. 4 root root 26 Aug 18 14:28 .. lrwxrwxrwx. 1 root root 16 Aug 17 16:09 nxagent -> /usr/bin/nxagent lrwxrwxrwx. 1 root root 7 Aug 17 21:28 x2goagent -> nxagent $ ls -lah /usr/bin/nxagent -rwxr-xr-x. 1 root root 4.5M Jul 18 17:47 /usr/bin/nxagent # Where I found the related libraries $ ls -lah /usr/lib64/*NX* lrwxrwxrwx. 1 root root 18 Aug 18 14:15 /usr/lib64/libNX_X11.so.6 -> libNX_X11.so.6.3.0 -rwxr-xr-x. 1 root root 1.3M Jul 18 17:47 /usr/lib64/libNX_X11.so.6.3.0

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utmp / wtmp
by Robert Dinse 18 Aug '18

18 Aug '18

Is there a way to make an x2go session show up in utmp and wtmp as a normal ssh terminal session would? -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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Backgrounds
by Robert Dinse 14 Aug '18

14 Aug '18

Oddly today all my backgrounds are displaying again. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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Backgrounds
by Robert Dinse 13 Aug '18

13 Aug '18

On all of my Ubuntu servers when accessing via x2go and mate desktop, I no longer see the background, just solid black. Going to other systems such as CentOS still displays background okay. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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Problem with SHIFT, Linux server, Mac client
by Marcin Żukowski 12 Aug '18

12 Aug '18

I'm using x2go on MacOSX, connecting to a Linux server. I'm hitting this weird behavior that after pressing SHIFT, some keys don't work. This is quite annoying when typing. For example, when I hold SHIFT and press SPACE, I'm getting these events from xev (Linux - server side), and SPACE doesn't show. Note the "NoSymbol" below. KeyPress event, serial 285, synthetic NO, window 0x2800001, root 0xe3, subw 0x0, time 615096810, (353,1185), root:(357,1288), state 0x0, keycode 64 (keysym 0xffe1, Shift_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 285, synthetic NO, window 0x2800001, root 0xe3, subw 0x0, time 615097120, (353,1185), root:(357,1288), state 0x1, *keycode 57 (keysym 0x0, NoSymbol)*, same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False Same in xterm on Mac (client side) KeyPress event, serial 34, synthetic NO, window 0xc00001, root 0x1d1, subw 0x0, time 615286125, (1429,933), root:(1449,976), state 0x0, keycode 64 (keysym 0xffe1, Shift_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 34, synthetic NO, window 0xc00001, root 0x1d1, subw 0x0, time 615286693, (1429,933), root:(1449,976), state 0x1, *keycode 57 (keysym 0x20, space)*, same_screen YES, XLookupString gives 1 bytes: (20) " " XmbLookupString gives 1 bytes: (20) " " XFilterEvent returns: False Here's what setxkbmap prints (server/Linux side) $ setxkbmap -query -v 7 Applied rules from xorg: rules: xorg model: null layout: us,pl variant: , options: grp:shift_caps_toggle Trying to build keymap using the following components: keycodes: xfree86+aliases(qwerty) types: complete compat: complete symbols: pc+us+pl:2+group(shift_caps_toggle) geometry: pc(pc104) rules: xorg model: null layout: us,pl variant: , options: grp:shift_caps_toggle Any ideas how to fix it? Thanks in advance! client: x2goclient 4.1.2.1 server: x2goserver-4.0.1.20

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Clipboard copy paste keeps being unreliable for years now
by Nigra Truo 10 Aug '18

10 Aug '18

Hi, I have been using X2go with a Debian Server and Linux Debian and Windows 7 clients for ages now. Most of the time it works flawlessly, but one thing that bugs the hell out of me is that copy paste via clipboard from Client to server does not work reliably. It works most of the time, but then it just fails, when I copy something, and paste in the target machine, nothing gets pasted. Now I want to troubleshoot and fix this once and for all. What causes this problem, why does copy paste fail sometimes? Thanks, Markus -- *Por sperto kaj lerno ne sufiĉas eterno.*

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client name
by richard lucassen 03 Aug '18

03 Aug '18

Hello list, I use "Custom desktop" as windowmanager, I start the session with a script with the client name as parameter. In this way I'm able to find the client name of the station which /initialized/ the session. But is there a way to see which client /resumes/ an already existing session? R. -- richard lucassen http://contact.xaq.nl/

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Debugging Server Side Issues
by Robert Dinse 01 Aug '18

01 Aug '18

I've installed x2goserver on Enso, a Ubuntu derived Linux. It works find as root, but as a non-root user it fails. In syslog on the server I see the following: Jul 28 18:44:08 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 1). Jul 28 18:44:08 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 2). Jul 28 18:44:08 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 3). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 4). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 5). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 6). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 7). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 8). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 9). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: no free display number available, cannot start new session. Retrying (run 10). Jul 28 18:44:09 enso /usr/bin/x2gostartagent: Unable to find free display port or insert new session into database; parameters: port (50), hostname (enso) and session name (). Since it works as root I'm assuming a permission issue somewhere but I have no idea where to look. Any suggestions? -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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x2go-user August 2018