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 you are using, and that's probably the most relevant piece of information pertaining to this issue. > On Sep 11, 2014, at 6:55 AM, Stephan Josel <s.jo...@axis-simulation.com> > wrote: > > 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, user B does not get a correct display of the > OpenGL application, he rather gets a "damaged" framebuffer or even a > black one. If I change the order of start of the application (user B > first then user A), the same behavior is there. > > I did the following to exclude errors: > > * Check if X :0 has direct rendering: yes > * Found no suspicious log entries in the vgl client logs > * Reproduced the error with different OpenGL applications > > It's very strange since this behavior came suddenly. > > Thanks in advance, > Stephan > > ------------------------------------------------------------------------------ > Want excitement? > Manually upgrade your production database. > When you want reliability, choose Perforce > Perforce version control. Predictably reliable. > http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk > _______________________________________________ > VirtualGL-Users mailing list > VirtualGL-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtualgl-users ------------------------------------------------------------------------------ Want excitement? Manually upgrade your production database. When you want reliability, choose Perforce Perforce version control. Predictably reliable. http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
