x2go-dev January 2016

x2go-dev@lists.x2go.org

28 participants
160 discussions

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). --

3 2

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

3 2

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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Bug#874: move Xinerama code from libNX_Xinerama to hw/nxagent
by Mike Gabriel 23 Feb '16

23 Feb '16

Package: nxagent Version: 3.5.0.32 Severity: wishlist This bug is a tracking bug for the new Xinerama rewrite in nx-libs 3.6.x. All Xinerama or LD_LIBRARY_PATH related issues in X2Go will be merged into this bug. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby 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#114: debbugs still produces weird mails of the form <package-name>@
by Mike Gabriel 22 Feb '16

22 Feb '16

Package: bugs.x2go.org Severity: important See undeliv mail report below... Mike ----- Weitergeleitete Nachricht von MAILER-DAEMON(a)das-netzwerkteam.de ----- Datum: Fri, 1 Feb 2013 09:40:04 +0100 (CET) Von: Mail Delivery System <MAILER-DAEMON(a)das-netzwerkteam.de> Betreff: Undelivered Mail Returned to Sender An: root(a)das-netzwerkteam.de This is the mail system at host ymir. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <nx-libs@>: bad address syntax <x2goserver@>: bad address syntax ----- Ende der weitergeleiteten Nachricht ----- -- 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#417: Two screens, wrong screen used for limits of positioning context menus
by Mike Gabriel 20 Feb '16

20 Feb '16

Control: merge -1 #874 merging #417 into the tracking bug #874 for the Xinerama rewrite. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby 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#150: Cinnamon 2.2 does not work
by Michael DePaulo 20 Feb '16

20 Feb '16

I just tested Cinnamon 2.2.13 and it does not work properly with X2Go. Basically, Cinnamon resorts fo "fallback mode", which is not the same as Cinnamon2d. More details are below. Note that GLX is enabled, and I ran the "Custom Desktop" command: cinnamon-session-cinnamon2d ---- When I connect, only gnome-panel is running. (Basically, gnome-flashback is running, although package gnome-session-flashback is not installed) It is very different from cinnamon2d, which works locally, and there are many bugs in this version of gnome-panel/gnome-flashback. For example, you cannot even set a desktop background using the GUIs. I also see a dialog with the text: Do you want to restart Cinnamon? Cinnamon just crashed. You are currently running in Fallback Mode. If I click yes, the dialog comes back up. If I click No, I the dialog closes, and the session is usable, but it's very buggy for aforementioned reasons. This is just a VM I setup for the specific purpose of testing Cinnamon compatibility with X2Go. I have the GLX extension enabled on my test system (/etc/x2go/x2goagent.options has the line to disable GLX commented out) - Linux mint 17 qiana (based on Ubuntu 12.04 trusty) 64-bit - All latest level 1, 2 and 3 OS updates installed. - cinnamon version 2.2.13 - Custom Desktop specified in x2goclient: cinnamon-session-cinnamon2d - x2goserver & x2goserver-xsession: 4.0.1.15-0~847~ubuntu14.04.1 - nxagent & x2goagent: 2:3.5.0.27-0~446~ubuntu14.04.1 I've attached the contents of my .xsession-x2go-errors file. Note the following session files: batmin@mint-q /usr/share/cinnamon-session/sessions $ ls cinnamon2d.session cinnamon.session batmin@mint-q /usr/share/cinnamon-session/sessions $ cat cinnamon2d.session [Cinnamon Session] Name=Cinnamon (Software Rendering) RequiredComponents=cinnamon;cinnamon-settings-daemon;cinnamon-screensaver;nemo-autostart;nm-applet; DesktopName=X-Cinnamon batmin@mint-q /usr/share/xsessions $ ls cinnamon2d.desktop cinnamon.desktop batmin@mint-q /usr/share/xsessions $ cat cinnamon2d.desktop [Desktop Entry] Name=Cinnamon (Software Rendering) Comment=This session logs you into Cinnamon (using software rendering) Exec=cinnamon-session-cinnamon2d TryExec=/usr/bin/cinnamon2d Icon= Type=Application X-Ubuntu-Gettext-Domain=cinnamon X-GNOME-Provides=cinnamon2d batmin@mint-q /usr/share/xsessions $ cat /usr/bin/cinnamon-session-cinnamon2d #! /bin/sh exec cinnamon-session --session cinnamon2d "$@"

2 1

Bug#707: BPG as bitmap compression engine in NX
by Mike Gabriel 20 Feb '16

20 Feb '16

Package: libxcomp3 Severity: wishlist Hi all, By Savko Sergey I have just been pointed to the upcoming BPG image compression library [1]. Quoting their website: """ BPG (Better Portable Graphics) is a new image format. Its purpose is to replace the JPEG image format when quality or file size is an issue. Its main advantages are: High compression ratio. Files are much smaller than JPEG for similar quality. Supported by most Web browsers with a small Javascript decoder (gzipped size: 55 KB). Based on a subset of the HEVC open video compression standard. Supports the same chroma formats as JPEG (grayscale, YCbCr 4:2:0, 4:2:2, 4:4:4) to reduce the losses during the conversion. An alpha channel is supported. The RGB, YCgCo and CMYK color spaces are also supported. Native support of 8 to 14 bits per channel for a higher dynamic range. Lossless compression is supported. Various metadata (such as EXIF, ICC profile, XMP) can be included. """ We should take a look at this new compression library and check if it is usable in NX. Mike [1] http://bellard.org/bpg/ -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby 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…

3 4

Bug#875: upgrade to nx-libs 3.6.x in X2Go
by Mike Gabriel 20 Feb '16

20 Feb '16

Package: nx-libs Version: 3.5.0.31 Severity: wishlist This will be a tracking bug for all issue reported against nx-libs 3.5.0.x that are fixed (by what reason ever) in nx-libs 3.6.x. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby 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…

2 1

Bug#826: shadow sessions inside nxagent sessions fail
by Mike Gabriel 20 Feb '16

20 Feb '16

Package: nxagent Severity: important Version: 3.5.0.29 Control: forwarded -1 https://github.com/ArcticaProject/nx-libs/issues/6 We just tried to run cascaded sessions with one of them being a desktop sharing session: (a) from client (host-A) launch X2Go session to a remote server (server-B) (b) from X2Go session on server-B launch a remote desktop sharing session with :0 on remote host-C Result: a black nxagent window appears (inside the X2Go Session on server-B) that accepts mouse and keyboard input (which both arrive on host-C via desktop sharing). If I manage to move a window via the desktop sharing session, the black nxagent window does some screen updates, but no full view of the remotely shared desktop appears. Further discussion see: https://github.com/ArcticaProject/nx-libs/issues/6 Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby 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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x2go-dev January 2016