Re: [VirtualGL-Users] "Damaged" Framebuffer with multiple users

2014-09-11 Thread DRC
Has the driver been upgraded recently? Does setting VGL_READBACK=sync work around the problem? Does using a different version of VGL work around it? Suffice it to say that no one else is experiencing this, so I strongly suspect that you'll have better luck filing it as a support request with nVi

Re: [VirtualGL-Users] "Damaged" Framebuffer with multiple users

2014-09-11 Thread Stephan Josel
Hi! Thanks for your quick reply. Yes, I forgot to mention the card. It's a Nvidia GPU GT 430 with driver version 334.21. We didn't experience any of this kind of problem for a long time, it's very strange. Thanks, Stephan > I have never seen issues like this with nVidia drivers, and in fact VG

Re: [VirtualGL-Users] "Damaged" Framebuffer with multiple users

2014-09-11 Thread DRC
I have never seen issues like this with nVidia drivers, and in fact VGL is deployed commercially on machines where dozens of users (sometimes more) are sharing a GPU. I have, however, seen multi-instance problems like this with Intel's drivers. You didn't specify which GPU and driver revision y

[VirtualGL-Users] "Damaged" Framebuffer with multiple users

2014-09-11 Thread Stephan Josel
Hi! Has anyone experienced the following and found a solution? On our server (I set it up as headless X-server on display :0) where vgl is installed user A starts an OpenGL application. Another user (user B) connects to the server and tries to start also the same OpenGL application. However, u