I tried to reproduce the problem with glxgears. It can happen, but it is harder to reproduce than with steam. For steam it happens every time, for glxgears it only happened twice out of ~15 tries.
But when it happens in glxgears, no "reporting 9 5 33 271" lines are added to Xorg.0.log, so I think these are two different issues. The compositing-enable trick also works for glx_gears. As far as I can tell the problem only happens with certain programs. I think it depends on whether or not OpenGL is used for drawing. For me it happens for *) Steam *) Games (both Steam and others like e.g. supertuxkart) *) glxgears It does not happen for typical office programs that use GUI toolkits like Qt or GTK, e.g. okular, gedit, etc. According to [1] Steam uses a custom toolkit called VGUI, which is also uses by their Source engine. Thus I would guess that it is also drawn using OpenGL. [1] http://stackoverflow.com/questions/2389717/what-gui-toolkit-does- valve-use-for-steam -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1430888 Title: DRI_PRIME with radeon/intel windows do not draw To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1430888/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
