[slurm-users] Issue with x11

Marcus Wagner wagner at itc.rwth-aachen.de
Wed May 15 07:36:30 UTC 2019

Dear Mahmood,

please open a console in the VNC session, do a ssh -Y rocks7 in the 
console (yes, relogin to the console) and try it again.
SLURM does not want to use local displays, and a VNC session is a 
"local" display, as far as it concerns linux and the X11 subsystem.
So, you need to relogin or login to another frontend node by ssh to get 
a remote display.


On 5/15/19 7:21 AM, Mahmood Naderan wrote:
> >No, but you'll need to logout of rocks7 and ssh back into it.
> >Are you physically logged into rocks7? Or are you connecting via SSH? 
> $DISPLAY = :1 kind of means that you are physically logged into the 
> machine
> I am connecting through a vnc session. Right now, I have access to the 
> desktop of the frontend and I open a terminal and run things.
> I even
> xclock is working on the frontend and compute-0-0 (through ssh -Y).
> Regards,
> Mahmood

Marcus Wagner, Dipl.-Inf.

IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner at itc.rwth-aachen.de

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