Actually, I solved the issue by observing that the user had created a file "~/.vnc/xstartup*.sh*" while it should have been "~/.vnc/xstartup"
at least, simply removing the extension and vncserver starts successfully, even in a srun ! Best; Jeremy. On 15/05/2021 14:02, Jeremy Fix wrote: > Hello ! > > I'm facing a weird issue. With one user, call it gpupro_user , if I log > with ssh on a compute node, I can run a vncserver (see command [1] > below) succesfully (in my case, a tigervnc server). However, if I > allocate the exact same node through a srun (see command [2] below), > running vnc server fails with the error given at the end of this message. > > And finally, if I do the exact same srun, having the exact same computer > node, from another login (my own login actually), and then start > vncserver with the exact same command, it works. > > So, do you think there is anything in the way we configured the user > gpupro_user, or maybe declared it in sacctmgr or somewhere that could > explain why running vncserver from within the srun session fails ? > > Thank you for your help. > > Have a nice day ; > > Jeremy. > > [1] vncserver -SecurityTypes None -depth 32 -geometry 1680x1050 > > [2] srun --nodelist=tx01 -N 1 -p gpue60 -t 0:30:00 --pty bash > > ------- VNC error ---------------------------------------- > > Please be aware that you are exposing your VNC server to all users on the > local machine. These users can access your server without authentication! > > New 'tx01:1 (gpuaut_2)' desktop at :1 on machine tx01 > > Starting applications specified in /etc/X11/Xvnc-session > Log file is /usr/users/gpuaut/gpuaut_2/.vnc/tx01:1.log > > Use xtigervncviewer -SecurityTypes None :1 to connect to the VNC server. > > > vncserver: Failed command '/etc/X11/Xvnc-session': 256! > > =================== tail -15 /usr/users/gpuaut/gpuaut_2/.vnc/tx01:1.log > =================== > Killing Xtigervnc process ID 31975... which seems to be deadlocked. > Using SIGKILL! > > Xvnc TigerVNC 1.7.0 - built Dec 5 2017 09:25:01 > Copyright (C) 1999-2016 TigerVNC Team and many others (see README.txt) > See http://www.tigervnc.org for information on TigerVNC. > Underlying X server release 11905000, The X.Org Foundation > > > Sat May 15 13:57:35 2021 > vncext: VNC extension running! > vncext: Listening for VNC connections on local interface(s), port 5901 > vncext: created VNC server for screen 0 > XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1" > after 175 requests (175 known processed) with 0 events remaining. > Killing Xtigervnc process ID 7169... which seems to be deadlocked. Using > SIGKILL! > > =========================================================================================== > > Starting applications specified in /etc/X11/Xvnc-session has failed. > Maybe try something simple first, e.g., > tigervncserver -xstartup /usr/bin/xterm > ------- VNC error ---------------------------------------- > > >
