x2go-dev November 2015

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14 participants
123 discussions

Bug#63: Current Cairo test suite segfaults x2goagent
by Moritz Struebe 13 Jun '16

13 Jun '16

Package: x2goagent Version: 3.5.0.16-0 x2goagant segfaults when running the cairo test suite. (The current version only compiles on Wheezy) This can be reproduced running: git clone git://anongit.freedesktop.org/git/cairo cd cairo ./autogen.sh ./configure make make test As quite few tests fail Bugs #62 and #35 might be related to Cairo.

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Bug#78: NX_xrandr lacks support from Xrandr 1.2 and higher
by Reinhard Tartler 13 Jun '16

13 Jun '16

Package: x2goagent When starting a new x2go session, the startup scripts modify the LD_LIBRARY_PATH of all applications to include /usr/lib/nx/X11/Xrandr. This replaces the system libXrandr with the NX/X2go provided one. Unfortunately, this breaks the xrandr utility: >> echo $LD_LIBRARY_PATH /usr/lib/nx/X11/Xrandr:/usr/lib/nx/X11/Xinerama:/usr/lib/nx/X11 >> xrandr xrandr: symbol lookup error: xrandr: undefined symbol: XRRGetScreenSizeRange zsh: exit 127 xrandr -- regards, Reinhard

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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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x2go-dev November 2015