x2go-dev October 2015

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Bug#908: nxagent segfault, causes session loss
by Rob Izzard 13 Jun '16

13 Jun '16

Package: nxagent Version: 3.5.0.32-0~668~ubuntu14.04.1 Severity: important Dear nxagent coders, Over the last couple of weeks I have lost a few x2go sessions which is, you can imagine, annoying. I thought it was just a rare bug and I was unlucky, but today it happened again so I have collected what I can. It seems that when I try to connect to a running session there is *sometimes* a crash of nxagent. Not always, but when it happens x2go terminates the session. I do not know why x2go terminates the session - surely it should allow me to retry the connect? Anyway, everything in that session is lost, so this problem is fatal as well as annoying. The connection is to localhost, so there's no network failure (despite the suggestion of the error message). I hope this isn't a problem with the latest nx 3.5.0.32 ... :-/ please let me know how I can help any further. many thanks! Rob ----------- x2goclient: NXPROXY - Version 3.5.0 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '9703'. Session: Starting session at 'Wed Jul 22 16:46:43 2015'. Info: Using abstract X11 socket in kernel namespace for accessing DISPLAY=:0. Info: Connecting to remote host 'localhost:31001'. Info: Connection to remote proxy 'localhost:31001' established. Info: Connection with remote proxy completed. Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Info: Using LAN link parameters 1536/24/1/0. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'. 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 ':0'. Session: Session started at 'Wed Jul 22 16:46:43 2015'. Info: Established X server connection. Info: Using shared memory parameters 0/0K. Error: Failure reading from the peer proxy. Error: Connection with remote peer broken. Error: Please check the state of your network and retry. Session: Terminating session at 'Wed Jul 22 16:46:44 2015'. Session: Session terminated at 'Wed Jul 22 16:46:44 2015'. ----------- syslog (note the first 16:46:44 entry which contains the segfault) Jul 22 16:46:43 capc85 /usr/bin/x2goresume-session: client 127.0.0.1 has successfully resumed session with ID rgi-50-1437563485_stDKDE_dp24 Jul 22 16:46:44 capc85 kernel: [20606.521201] x2goagent[31916]: segfault at e0 ip 00000000004a658e sp 00007ffcbf2cf170 error 4 in nxagent[400000+555000] Jul 22 16:46:44 capc85 /usr/bin/x2gomountdirs[9804]: successfully mounted rgi@127.0.0.1:30003/home/rgi/.x2go/S-rgi-50-1437563485_stDKDE_dp24/spool to /tmp/.x2go-rgi/spool/C-rgi-50-1437563485_stDKDE_dp24 Jul 22 16:46:44 capc85 /usr/bin/x2gosetkeyboard: Setting X keyboard according to /home/rgi/.x2go/C-rgi-50-1437563485_stDKDE_dp24/keyboard Jul 22 16:46:44 capc85 /usr/bin/x2goumount-session[10024]: successfully unmounted "/tmp/.x2go-rgi/spool/C-rgi-50-1437563485_stDKDE_dp24" Jul 22 16:46:46 capc85 /usr/sbin/x2gocleansessions[1734]: rgi-50-1437563485_stDKDE_dp24, pid 31916 cleaning up stale X11 socket file: /tmp/.X11-unix/X50 Jul 22 16:46:46 capc85 /usr/sbin/x2gocleansessions[1734]: rgi-50-1437563485_stDKDE_dp24, pid 31916 cleaning up stale X11 lock file: /tmp/.X50-lock ------------- ~/.x2goclient/sessions: [20150414145525991] speed=4 pack=16m-jpeg quality=9 fstunnel=true export= iconvto=UTF-8 iconvfrom=ISO8859-1 useiconv=false fullscreen=false multidisp=false display=1 maxdim=false rdpclient=rdesktop directrdpsettings= width=800 height=600 dpi=96 setdpi=true xinerama=false usekbd=true layout=us type=auto sound=false soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=local desktop icon=:icons/128x128/x2gosession.png host=localhost user=rgi key= rdpport=3389 sshport=22 autologin=true krblogin=false directrdp=false rootless=false published=false applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL command=KDE rdpoptions= rdpserver= xdmcpserver=localhost usesshproxy=false sshproxytype=SSH sshproxyuser= sshproxykeyfile= sshproxyhost= sshproxyport=22 sshproxysamepass=false sshproxysameuser=false sshproxyautologin=false clipboard=both krbdelegation=false sshproxykrblogin=false -------------- System information: Linux Kubuntu 14.04, 16 core Intel i7-5960X, kernel 4.1.3-040103-generic #201507220129, libc 2.19-0ubuntu6.6 packages installed (from "dpkg -l" and grepped) i x2goagent 2:3.5.0.32-0~668~ubuntu14.04.1 all X2Go agent ii x2goclient 4.0.4.0-0~1044~ubuntu14.04.1 amd64 X2Go Client application (Qt4) ii x2goserver 4.0.1.19-0~1064~ubuntu14.04.1 amd64 X2Go server daemon scripts ii x2goserver-extensions 4.0.1.19-0~1064~ubuntu14.04.1 all X2Go server daemon scripts (extensions) ii x2goserver-fmbindings 4.0.1.19-0~1064~ubuntu14.04.1 all Generic (freedesktop-based) file manager bindings for X2Go ii x2goserver-xsession 4.0.1.19-0~1064~ubuntu14.04.1 all X2Go server daemon scripts (Xsession runner) ii libnx-x11-6:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 client-side library ii libnx-xcomposite1:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 Composite extension library ii libnx-xdamage1:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 damaged region extension library ii libnx-xdmcp6:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 Display Manager Control Protocol library ii libnx-xext6:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 miscellaneous extension library ii libnx-xfixes3:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 miscellaneous 'fixes' extension library ii libnx-xinerama1:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 Xinerama extension library ii libnx-xpm4:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 pixmap library ii libnx-xrandr2:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 RandR extension library ii libnx-xrender1:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 Rendering Extension client library ii libnx-xtst6:amd64 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 nx-X11 Testing -- Record extension library ii nx-x11-common 2:3.5.0.32-0~668~ubuntu14.04.1 all nx-X11 (common files) ii nxagent 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 NX agent ii nxproxy 2:3.5.0.32-0~668~ubuntu14.04.1 amd64 NX proxy

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Bug#838: control-alt-arrow keys
by Robert Dinse 24 Feb '16

24 Feb '16

Package: x2goagent I am using Ubuntu 14.10 with Mate Desktop with multiple work spaces. If I use Remmina with NX plugin, the control-alt-right/left arrow keys work to switch work spaces even when I'm up on a remote desktop. With X2Go, it usually doesn't work, except if I use control-alt-M to minimize the session then restore it, the keys will usually work thereafter. Remmina has a way to toggle this behavior, a little pull down at the top with a keyboard symbol. If it's down, the control-alt-arrows go to the end application allowing me to switch work spaces on the remote desktop, and if it's up they go to the local desktop. It would be nice if x2go had a similar facility but if not it would be better for that key sequence to always act locally since I can switch work spaces remotely by using the mouse but can not locally because the switcher is hidden by the remote desktop x2go is displaying. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 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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Bug#848: Running a Windowed Shadow Session doesn't Work on MS Windows
by Stefan Baur 24 Feb '16

24 Feb '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 package: nxagent When trying to run a shadowed session in windowed mode on a MS Windows client, vcxsrv.exe dies almost immediately after displaying the remote screen for the fraction of a second. - -- 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVMlAbAAoJEG7d9BjNvlEZiwEH/RrhxXHF4XZR2oAnjf99bSWm Ry5T/2oLWF468KLpGQKPk1sDZ363E+Za1vDPb+OSR1MB2umTJjJujALb1+wvFXoe HFa8Pp1Od1lpqdIGpPHm3OHCpmdkZl1VRCJJkCI1jP7qy2/58x1yHnbNIx/6YVwi qpjPZ+RhXG3HinEkdDoz9Km7pXQF9TYNR+raSH5vt+EEPrXBm805ZNyADqpzKvBb +OjKZeiBLg5oWqxfMMCxTZ0Zph+fpl/qt6YaWBOAcfBCm0M+LKY4yqcQHFx8B4+6 9jR52kDsyZzezlkTvFW9HZh9PvbXlgOgMcOEz4LQuhMQ/TYzCDkh+uZ5b171PnA= =99OL -----END PGP SIGNATURE-----

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Bug#847: Cleanly Terminating a Fullscreen Shadow Session Locally doesn't Work on MS Windows
by Stefan Baur 24 Feb '16

24 Feb '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 package: nxagent When trying to terminate a shadow session running in fullscreen mode on a MS Windows client, Alt-Tab gets passed to MS Windows, so one can reach the X2GoClient control buttons (folder sharing, pause, terminate), but clicking pause or terminate doesn't do anything. Only the "X Button" (upper right corner of the window decoration) of X2GoClient has an effect - but obviously also terminates x2goclient.exe. xgoterminatesession will, of course, work, when run on the remote end. - -- 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVMlAXAAoJEG7d9BjNvlEZgV4IAJsQqa0Wtr409ftpmZ9ekKNH pSsBbSR1MAUU9QOnm617J5MsYL26KKfbx9Y9UvF5CDopEcQ2XdW67XgTDkkFpeNy 4+7Okxmvyaccy6tNNrSBsE3G0tNE4/0uHypBwMgKcpUFPqajrueo5o+kmFIsfgPK XfKJhyK78U2fHq4uCIFEU2PKWi0I1P5S6JY+hJ3vdkCuki/BK+sdTPaFXsfIF5h6 rt+1JHUjo2gbJkTRwzrpXffOU+8J/w0hwJddVgHJGtGR4T/GOZGw1F2DD9xgBkDF HKY5HxQiSHjMohfvpkTB9uzK0w1l5jJhDkQeGtKxrREIxNK5GY/G8qj6I77lvAs= =PqSG -----END PGP SIGNATURE-----

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Bug#99: x2goclient segmentation fault
by Peter W 24 Feb '16

24 Feb '16

Package: x2goclient Version: 4.0.0.1-0~352~quantal1 Dear bug tracker, I get this segmentation fault when using x2goclient to connect to remote host: <<< $ x2goclient QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. ONMainWindow constructor Can't load translator (:/x2goclient_en_us) ! Can't load translator :/qt_en_US ONMainWindows constructor finished, home Directory is: "/home/[...]" read 1 sessions from config file start new ssh connection to server: "[...]" : "22" krb: false ssh connection ok continue normal x2go session Segmentation fault (core dumped) >>> I also get the segmentation fault message on simple commands like "x2goclient --help": <<< $ x2goclient --help ONMainWindow constructor Can't load translator (:/x2goclient_en_us) ! Can't load translator :/qt_en_US Usage: x2goclient [Options] Options: --help show this message --help-pack show available pack methods --no-menu hide menu bar --no-session-edit not allow user to edit preconfigured sessions --maximize start maximized --hide start hidden --portable start in "portable" mode --pgp-card use openPGP card authentication --xinerama use Xinerama by default --ldap-printing allow client side printing in LDAP mode --thinclient run without window manager --haltbt show shutdown button --add-to-known-hosts add RSA key fingerprint to .ssh/known_hosts if authenticity of server can't be established --ldap=<host:port:dn> start with LDAP support. Example: --ldap=ldapserver:389:o=organization,c=de --ldap1=<host:port> LDAP failover server #1 --ldap2=<host:port> LDAP failover server #2 --ssh-port=<port> connect to this port, default 22 --client-ssh-port=<port> local ssh port (for fs export), default 22 --command=<cmd> Set default command, default value 'KDE' --session=<session> Start session 'session' --user=<username> select user 'username' --geomerty=<W>x<H>|fullscreen set default geometry, default value '800x600' --dpi=<dpi> set dpi of x2goagent to dpi, default not set --link=<modem|isdn|adsl|wan|lan> set default link type, default 'adsl' --pack=<packmethod> set default pack method, default '16m-jpeg-9' --kbd-layout=<layout> set default keyboard layout or layouts comma separated --kbd-type=<typed> set default keyboard type --home=<dir> set users home directory --set-kbd=<0|1> overwrite current keyboard settings --autostart=<app> launch "app" by session start in "published applications" mode --session-conf=<file> path to alternative session config close event Segmentation fault (core dumped) >>> I would be really glad to have assistance finding what might be the cause of this issue, because x2go functionality is quite important to me. Thank you, Eugene

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Bug#98: Use a IRC bot to inject Git commit messages into #x2go on irc.freenode.net
by Mike Gabriel 23 Feb '16

23 Feb '16

Package: git.x2go.org Severity: wishlist Use a IRC bot to inject Git commit messages into #x2go on irc.freenode.net. kjellski on IRC proposed a piece of code (simple-bot) as descriped here: https://wiki.icinga.org/display/community/GIT+Commit+Bot Mike -- DAS-NETZWERKTEAM mike gabriel, rothenstein 5, 24214 neudorf-bornstein fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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Bug#898: Weird colors and image issues on ppc64le Ubuntu 14.04
by Mihai Moldovan 23 Feb '16

23 Feb '16

Package: nx-libs Version: 3.5.0.29 After building and installing X2Go packages on Ubuntu 12.04 ppc64le some months ago, I experienced the following strange behavior(s): - image colors were distorted sometimes (but sometimes not) - instead of brown, pink was shown - images (PNG? SVG?) didn't load or show correctly. Colors were way off (see above) and mostly only contours drawn, if even that. - scrolling in a scrollview (e.g., XFCE's settings manager(?)) sometimes forced a correct redraw of images, but mostly only partitially - hovering over an image broke it visually again - mouse cursor either disappeared completely or was replaced with a block (what seemed to be random data converted to an image) I have not done any debugging on these issues yet. Mihai

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Bug#900: Gedit, gnome-terminal and others crash in rootless mode
by Camilo Alejandro Arboleda 23 Feb '16

23 Feb '16

Package: libnx-X11 Version: 2.3.5 Setup: 1. x2goserver in a debian testing machine. 2. x2goclient in a windows machine. 3. Create a session with a virtual desktop. 4. Run gedit in the session created in 3. 5. Create a session in windows launching only xterm. 6. Run gedit from the console created in 5. 7. Create a session in windows launching only gedit. Results: 1. Steps from Setup 3, 4 and 5 work fine. 2. Steps from Setup 6 and 7 crash (close the session). A quick look in dmesg shows that *libNX_X11.so.6.2* caused a SEGFAULT. Running x2goagent with a debugger gives the following backtrace: *(gdb) backtrace* #0 _XData32 (dpy=dpy@entry=0xf591b0, data=data@entry=0x163c2c4, len=len@entry=18652) at XlibInt.c:3775 #1 0x00007f759e34dce1 in XChangeProperty (dpy=0xf591b0, w=<optimized out>, property=<optimized out>, type=6, format=<optimized out>, mode=<optimized out>, data=0x163c2c4 "\377\377\377\377\354\356\356\377\377\377\377\377\354\356\356\377\377\377\377\377\354\356\356\377\377\377\377\377\357\360\360\377\377\377\377\377\364\365\365\377\377\377\377\377\307\312\311\375\377\377\377\377\t\t\t\035", nelements=4663) at ChProp.c:85 #2 0x00000000004b1e37 in nxagentExportProperty (pWin=0x20, property=*4663*, type=23315140, format=4669, mode=32, nUnits=*4663*, value=0x15fc2e0) at Rootless.c:763 #3 0x000000000042222a in ProcChangeProperty (client=0xf591b0) at X/NXproperty.c:331 #4 0x000000000042eea2 in Dispatch () at X/NXdispatch.c:748 Looking at the highlighted values, it seems that gedit is sending a malformed ChangeProperty request, and rootless is failing to process it. Specifically the segment between lines 735-780, tries to set a property that is bigger than the maximum size required, but because it's a malformed request it ends up writing in memory outside the boundaries of the output buffer. Alternatives: 1. Ensure that nxagentExportProperty never writes beyond the boundaries of the output buffer. 2. Resize the output buffer to match the required size (ProcChangeProperty seems to do something similar). 3. Ignore big requests (see attached patch). --

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Bug#938: x2agent segfault in LibNX_X11.so when disconnecting
by James Kohout 23 Feb '16

23 Feb '16

Package: x2goagent Version: 3.5.0.31-1.el6 When I disconnected from a windows client, I lost my session. This is the result in the server at the time of the disconnect. It does not happen every time, just some times when I disconnect. I can re-connect fine with a new session, but the running session is lost. Sep 2 00:34:36 tyler kernel: x2goagent[28724]: segfault at 7fff43451ff8 ip 00007fcf05ebad84 sp 00007fff43451ff0 error 6 in libNX_X11.so.6.2[7fcf05e73000+10c000] Sep 2 00:34:36 tyler /usr/bin/x2gosuspend-session: session with ID jameskohout-58-1441122134_stDGNOME_dp32 has been suspended successfully Sep 2 00:34:45 tyler abrt[11437]: Saved core dump of pid 28724 (/usr/lib64/nx/bin/nxagent) to /var/spool/abrt/ccpp-2015-09-02-00:34:36-28724 (390942720 bytes) Sep 2 00:34:45 tyler abrtd: Directory 'ccpp-2015-09-02-00:34:36-28724' creation detected Sep 2 00:34:45 tyler abrtd: Package 'nxagent' isn't signed with proper key Sep 2 00:34:45 tyler abrtd: 'post-create' on '/var/spool/abrt/ccpp-2015-09-02-00:34:36-28724' exited with 1 Sep 2 00:34:45 tyler abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2015-09-02-00:34:36-28724' Linux tyler.dal.active-semi.com 2.6.32-504.8.1.el6.x86_64 #1 SMP Tue Jan 27 12:21:41 PST 2015 x86_64 x86_64 x86_64 GNU/Linu Distributor ID: OracleServer Description: Oracle Linux Server release 6.6 Release: 6.6 Codename: n/a I looked and the /var/spool/abrt/ccpp-2015-09-02-00:34:36-28724 is gone. -- CONFIDENTIALITY NOTIFICATION: This communication may contain confidential information which is intended solely for the use of the recipient(s) addressed in this email. If you are not the intended recipient of this communication, you are hereby notified that any use, distribution or reproduction of this communication and/or attachment(s) is strictly prohibited; please notify the sender immediately, delete this communication and attachment(s) from your system, and destroy any hardcopies you may have printed

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Bug#943: segfault on x2goagent (error 14 in nxagent) while connecting
by Juan Navarro 23 Feb '16

23 Feb '16

Package: x2goagent Version: 3.5.0.32 A segmentation fault makes impossible to connect two machines in Local Area Network. No firewalls of port limitations are in effect, and SSH works normally as per the default Ubuntu installation (packages "openssh-server" and "openssh-client"). While connecting, the server side consistently aborts with a segmentation fault. This happens when the client side selects the Display mode "Custom" or "Use whole display", however the connection stablishes correctly when the mode "Fullscreen" is chosen (although in this mode the whole server screen is stretched and it is almost impossible to see anything, see server & client configurations). Please, if there is any other document I should include, don't hesitate to ask for it. Note that the systems start from a clean state, so the Server and Client configurations for X2Go are as per the default values. -------- Description of both systems -------- Server machine: * Ubuntu 14.04 server with minimal install of Xorg and Xfce * Kernel version 3.16.0-49, from package "linux-image-generic-lts-utopic" * X.Org X Server version 1.16.0, from package "xserver-xorg-lts-utopic" (1:7.7+7ubuntu2~trusty1) * Xfce 4.10.1 * The server has 6 screens configured with Xinerama, with a virtual desktop of 5760x5120. Below is included the output from "xrandr". Client machine: * Linux Mint 17.2 KDE * Kernel version 3.16.0-49 * X.Org X Server version 1.15.1 from package "xserver-xorg" (1:7.7+1ubuntu8.1) * KDE 4.14.2 * This is a workstation desktop with 2 1920x1080 screens. Server setup (from a clean state): # add-apt-repository ppa:x2go/stable # aptitude update # aptitude install x2goserver x2godesktopsharing sshfs x11-apps x11-session-utils x11-xfs-utils x2goserver-extensions x2goserver-xsession xbitmaps # adduser juan x2gouser # adduser juan x2godesktopsharing # sync ; shutdown -r now $ export DISPLAY=:0 ; x2godesktopsharing --activate-desktop-sharing Client setup (from a clean state): # add-apt-repository ppa:x2go/stable # aptitude update # aptitude install x2goclient $ x2goclient --debug Session Host: <Server IP> Login: juan SSH port: 22 Session type: "Connect to local desktop" Settings Display: Custom (800x600) Set display DPI: 96 Xinerama extension: No Enable sound support: No Client side printing support: No -------- Server xrandr output -------- $ xrandr Screen 0: minimum 320 x 200, current 5760 x 5120, maximum 16384 x 16384 DFP1 connected 1920x1080+0+2960 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 1680x1050 60.0 1400x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 60.0 1280x768 60.0 1280x720 60.0 1024x768 60.0 800x600 60.0 640x480 60.0 DFP2 disconnected (normal left inverted right x axis y axis) DFP3 disconnected (normal left inverted right x axis y axis) DFP4 disconnected (normal left inverted right x axis y axis) DFP5 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 1680x1050 60.0 1400x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 60.0 1280x768 60.0 1280x720 60.0 1024x768 60.0 800x600 60.0 640x480 60.0 DFP6 disconnected (normal left inverted right x axis y axis) DFP7 disconnected (normal left inverted right x axis y axis) DFP8 disconnected (normal left inverted right x axis y axis) DFP9 connected 3840x2160+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm 3840x2160 30.0*+ 2560x1440 30.0 2048x1536 30.0 1800x1440 30.0 1856x1392 30.0 1792x1344 30.0 1920x1200 30.0 1920x1080 30.0 1600x1200 30.0 1680x1050 30.0 1400x1050 30.0 1600x900 30.0 1280x1024 30.0 1440x900 30.0 1280x960 30.0 1280x768 30.0 1280x720 30.0 1024x768 30.0 800x600 30.0 640x480 30.0 DFP10 disconnected (normal left inverted right x axis y axis) DFP11 disconnected (normal left inverted right x axis y axis) DFP12 disconnected (normal left inverted right x axis y axis) DFP13 connected 1920x1080+1920+2960 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 1680x1050 60.0 1400x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 60.0 1280x768 60.0 1280x720 60.0 1024x768 60.0 800x600 60.0 640x480 60.0 DFP14 disconnected (normal left inverted right x axis y axis) DFP15 disconnected (normal left inverted right x axis y axis) DFP16 disconnected (normal left inverted right x axis y axis) DFP17 connected 1920x1080+0+4040 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 1680x1050 60.0 1400x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 60.0 1280x768 60.0 1280x720 60.0 1024x768 60.0 800x600 60.0 640x480 60.0 DFP18 disconnected (normal left inverted right x axis y axis) DFP19 disconnected (normal left inverted right x axis y axis) DFP20 disconnected (normal left inverted right x axis y axis) DFP21 connected 1920x1080+1920+4040 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 1680x1050 60.0 1400x1050 60.0 1600x900 60.0 1280x1024 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 60.0 1280x768 60.0 1280x720 60.0 1024x768 60.0 800x600 60.0 640x480 60.0 DFP22 disconnected (normal left inverted right x axis y axis) DFP23 disconnected (normal left inverted right x axis y axis) DFP24 disconnected (normal left inverted right x axis y axis) -------- Server log output -------- $ tail -f /var/log/syslog | grep -i x2go /usr/bin/x2golistdesktops[16853]: x2golistdesktops has been called without options /usr/bin/x2golistsessions[16863]: x2golistsessions has been called with options: x2goserver /usr/bin/x2gostartagent: x2gostartagent called with options: 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 0 S 1XSHADjuanXSHAD:0 /usr/bin/x2gostartagent: client announced itself as ,,172.16.0.146'' /usr/bin/x2gostartagent: shadow session requested: mode 1, user: juan, desktop: :0 /usr/bin/x2gosessionlimit[17006]: x2gosessionlimit has been called /usr/bin/x2golistsessions[17009]: x2golistsessions has been called with options: --all-servers /usr/lib/x2go/x2gogetdisplays[17026]: db_getdisplays called, server: MYHOST; return value: /usr/lib/x2go/x2gogetports[17035]: db_getports called, server: MYHOST; return value: /usr/lib/x2go/x2goinsertsession[17058]: db_insertsession called, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24, server: MYHOST, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24 /usr/lib/x2go/x2gogetports[17088]: db_getports called, server: MYHOST; return value: /usr/sbin/x2gocleansessions[1153]: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24: state file for this session does not exist: /tmp/.x2go-juan/C-juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24/state (this can be ignored during session startups) /usr/lib/x2go/x2goinsertport[17111]: db_insertport called, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24, server: MYHOST, SSH port: 30001 /usr/lib/x2go/x2gogetports[17120]: db_getports called, server: MYHOST; return value: |30001| /usr/lib/x2go/x2goinsertport[17134]: db_insertport called, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24, server: MYHOST, SSH port: 30002 /usr/lib/x2go/x2gogetports[17164]: db_getports called, server: MYHOST; return value: |30001| |30002| /usr/lib/x2go/x2goinsertport[17178]: db_insertport called, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24, server: MYHOST, SSH port: 30003 /usr/bin/x2gostartagent: user ,,juan'' grants access to /tmp/.x2go-juan/C-juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24 for group ,,x2godesktopsharing'' /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS /usr/share/x2go/x2gofeature.d/x2godesktopsharing.features: x2godesktopsharing.features called with options: X2GO_RUN_EXTENSIONS /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24 pre-start /usr/bin/x2gostartagent: successfully started X2Go agent session with ID juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24 /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS /usr/share/x2go/x2gofeature.d/x2godesktopsharing.features: x2godesktopsharing.features called with options: X2GO_RUN_EXTENSIONS /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24 post-start /usr/lib/x2go/x2gocreatesession[17321]: db_createsession called, session ID: juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24, cookie: a7c2e20a3046d67e613fcffb9953279e, client: 172.16.0.146, pid: 17243, graphics port: 30001, sound port: 30002, file sharing port: 30003 /usr/bin/x2gostartagent: blocking creation of agent's keyboard file /tmp/.x2go-juan/C-juan-50-1442489867_stS1XSHADjuanXSHADPP0_dp24/keyboard as requested by session startup command kernel: [ 591.423830] x2goagent[17243]: segfault at 0 ip (null) sp 00007ffd23048e58 error 14 in nxagent[400000+555000] -------- Client log output -------- $ x2goclient --debug x2go-INFO-1> "Starting X2Go Client..." x2go-WARNING-1> "English language requested, not loading translator." x2go-WARNING-1> "English language requested, not loading translator." Bus::open: Can not get ibus-daemon's address. IBusInputContext::createInputContext: no connection to ibus-daemon x2go-INFO-3> "Started X2Go Client." x2go-DEBUG-../src/onmainwindow.cpp:496> "$HOME=/home/juan" x2go-DEBUG-../src/onmainwindow.cpp:2179> Reading 1 sessions from config file. x2go-DEBUG-../src/sessionbutton.cpp:319> Creating QPixmap with session icon: ":/img/icons/128x128/x2gosession.png". x2go-DEBUG-../src/onmainwindow.cpp:2657> Creating QPixmap with session icon: '":/img/icons/128x128/x2gosession.png"'. x2go-INFO-8> "Starting connection to server: 172.16.0.143:22" x2go-DEBUG-../src/onmainwindow.cpp:2758> Starting new ssh connection to server:"172.16.0.143":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:168> SshMasterConnection, host "172.16.0.143"port 22user "juan"useproxy falseproxyserver ""proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:205> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:209> SshMasterConnection, instance SshMasterConnection(0x2524800) created. x2go-DEBUG-../src/sshmasterconnection.cpp:445> SshMasterConnection, instance SshMasterConnection(0x2524800) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:481> libssh not initialized yet. Initializing. x2go-DEBUG-../src/sshmasterconnection.cpp:792> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:807> state: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:966> Password authentication requested. x2go-DEBUG-../src/sshmasterconnection.cpp:657> User authentication OK. x2go-DEBUG-../src/onmainwindow.cpp:2853> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3120> Continue normal X2Go session x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 0: "export HOSTNAME && x2golistdesktops" x2go-DEBUG-../src/sshprocess.cpp:204> Running masterCon->addChannelConnection(this, '"29152f86-e05f-4030-a84f-838b8eaa8953"', '"bash -c 'echo "X2GODATABEGIN:29152f86-e05f-4030-a84f-838b8eaa8953"; export PATH="/usr/local/bin:/usr/bin:/bin"; export HOSTNAME && x2golistdesktops; echo "X2GODATAEND:29152f86-e05f-4030-a84f-838b8eaa8"'); x2go-DEBUG-../src/sshmasterconnection.cpp:1284> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1286> Passing new channel conenction object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1288> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1476> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1480> New channel:0x7f5f98012850 x2go-DEBUG-../src/sshmasterconnection.cpp:1511> Executing remote: "bash -c 'echo "X2GODATABEGIN:29152f86-e05f-4030-a84f-838b8eaa8953"; export PATH="/usr/local/bin:/usr/bin:/bin"; export HOSTNAME && x2golistdesktops; echo "X2GODATAEND:29152f86-e05f-4030-a84f-838b8eaa8953";'" x2go-DEBUG-../src/sshmasterconnection.cpp:1534> New exec channel created. x2go-DEBUG-../src/sshmasterconnection.cpp:1638> EOF on channel 0x7f5f98012850; SshProcess object: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:1706> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1710> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:517> SSH finished: raw output (stdout): "X2GODATABEGIN:29152f86-e05f-4030-a84f-838b8eaa8953 juan@:0 X2GODATAEND:29152f86-e05f-4030-a84f-838b8eaa8953 " x2go-DEBUG-../src/sshprocess.cpp:528> SSH finished: true - "juan@:0 " (0). x2go-DEBUG-../src/onmainwindow.cpp:3458> "juan@:0 " x2go-DEBUG-../src/onmainwindow.cpp:3984> Executing remote command: "X2GODPI=96 x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 0 S 1XSHADjuanXSHAD:0" x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 1: "X2GODPI=96 x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 0 S 1XSHADjuanXSHAD:0" x2go-DEBUG-../src/sshprocess.cpp:204> Running masterCon->addChannelConnection(this, '"c7117732-1c6d-480b-a38c-a7d4b931978f"', '"bash -c 'echo "X2GODATABEGIN:c7117732-1c6d-480b-a38c-a7d4b931978f"; export PATH="/usr/local/bin:/usr/bin:/bin"; X2GODPI=96 x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 0 S 1XSH"'); x2go-DEBUG-../src/sshmasterconnection.cpp:1284> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1286> Passing new channel conenction object to channelConnections. x2go-DEBUG-../src/sshmasterconnection.cpp:1288> Unlocking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:1476> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1480> New channel:0x7f5f98012850 x2go-DEBUG-../src/sshmasterconnection.cpp:1511> Executing remote: "bash -c 'echo "X2GODATABEGIN:c7117732-1c6d-480b-a38c-a7d4b931978f"; export PATH="/usr/local/bin:/usr/bin:/bin"; X2GODPI=96 x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 0 S 1XSHADjuanXSHAD:0; echo "X2GODATAEND:c7117732-1c6d-480b-a38c-a7d4b931978f";'" x2go-DEBUG-../src/sshmasterconnection.cpp:1534> New exec channel created. x2go-DEBUG-../src/sshmasterconnection.cpp:1583> EOF on channel 0x7f5f98012850; SshProcess object: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:1706> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1710> Channel closed. x2go-DEBUG-../src/sshprocess.cpp:517> SSH finished: raw output (stdout): "X2GODATABEGIN:c7117732-1c6d-480b-a38c-a7d4b931978f 50 0f9c5949089bcd60268bf68aeddf1142 11536 juan-50-1442492330_stS1XSHADjuanXSHADPP0_dp24 30001 30002 30003 X2GODATAEND:c7117732-1c6d-480b-a38c-a7d4b931978f " x2go-DEBUG-../src/sshprocess.cpp:528> SSH finished: true - "50 0f9c5949089bcd60268bf68aeddf1142 11536 juan-50-1442492330_stS1XSHADjuanXSHADPP0_dp24 30001 30002 30003 " (1). x2go-DEBUG-../src/onmainwindow.cpp:4790> Agent output: "50 0f9c5949089bcd60268bf68aeddf1142 11536 juan-50-1442492330_stS1XSHADjuanXSHADPP0_dp24 30001 30002 30003 " x2go-DEBUG-../src/sshprocess.cpp:372> Starting tunnel via SshProcess object 2: "localhost":30001 -> "localhost":31001 x2go-DEBUG-../src/onmainwindow.cpp:5400> "Starting NX proxy, command: nxproxy -S nx/nx,options=/home/juan/.x2go/S-juan-50-1442492330_stS1XSHADjuanXSHADPP0_dp24/options:50" x2go-DEBUG-../src/sshprocess.cpp:157> Direct tunnel: waiting for connections on "localhost":31001 x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: " NXPROXY - Version 3.5.0 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '3307'. Session: Starting session at 'Thu Sep 17 14:18:52 2015'. Info: Using abstract X11 socket in kernel namespace for accessing DISPLAY=:0. Info: Connecting to remote host 'localhost:31001'. Info: Connection to remote proxy 'localhost:31001' established. " x2go-DEBUG-../src/sshprocess.cpp:109> New TCP connection. x2go-DEBUG-../src/sshprocess.cpp:114> New socket: 15 x2go-DEBUG-../src/sshmasterconnection.cpp:1476> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1480> New channel:0x7f5f98011070 x2go-DEBUG-../src/sshmasterconnection.cpp:1486> Forwarding new channel, local port: 55067 x2go-DEBUG-../src/sshmasterconnection.cpp:1504> New channel forwarded. x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Info: Connection with remote proxy completed. " x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. " x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "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_24'. 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 ':0'. " x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Session: Session started at 'Thu Sep 17 14:18:52 2015'. Info: Established X server connection. " x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Info: Using shared memory parameters 0/0K. " x2go-DEBUG-../src/sshmasterconnection.cpp:1583> EOF on channel 0x7f5f98011070; SshProcess object: 2 x2go-DEBUG-../src/sshmasterconnection.cpp:1706> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1710> Channel closed. x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Error: Failure reading from the peer proxy. Error: Connection with remote peer broken. " x2go-DEBUG-../src/onmainwindow.cpp:5734> Proxy wrote on stderr: "Error: Please check the state of your network and retry. Session: Terminating session at 'Thu Sep 17 14:18:53 2015'. Session: Session terminated at 'Thu Sep 17 14:18:53 2015'. " x2go-DEBUG-../src/onmainwindow.cpp:5591> Deleting Proxy. x2go-DEBUG-../src/onmainwindow.cpp:5640> Waiting for proxy to exit. x2go-DEBUG-../src/onmainwindow.cpp:5665> Deleting SSH connection instance. x2go-DEBUG-../src/sshmasterconnection.cpp:711> SshMasterConnection, instance SshMasterConnection(0x2524800) waiting for thread to finish. x2go-DEBUG-../src/sshmasterconnection.cpp:1395> Disconnecting ... x2go-DEBUG-../src/sshmasterconnection.cpp:1406> Deleting channel connections. x2go-DEBUG-../src/sshmasterconnection.cpp:1414> Disconnecting session. x2go-DEBUG-../src/sshmasterconnection.cpp:1420> Deleting sockets. x2go-DEBUG-../src/sshmasterconnection.cpp:1427> All channels closed and session disconnected. Quiting session loop. x2go-DEBUG-../src/sshmasterconnection.cpp:715> SshMasterConnection, instance SshMasterConnection(0x2524800) thread finished. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshprocess.cpp:52> SshProcess destructor called. x2go-DEBUG-../src/sshmasterconnection.cpp:722> SshMasterConnection, instance SshMasterConnection(0x2524800) finished destructor. x2go-DEBUG-../src/onmainwindow.cpp:5667> Deleted SSH connection instance. x2go-DEBUG-../src/onmainwindow.cpp:5717> Finished proxy.

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x2go-dev October 2015