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