I am not completely sure the same bug affects me, but it is at least closely related.
I am also trying to get a two seat setup working. The first seat is on the primary graphics card which is the internal Intel card for a core i5 2400. The second seat is on a Radeon HD 5450 (PCI-Express). Unity works well in the first seat, however it does not work well in the second seat. Usually the first attempt after booting ends up with a non-functional desktop (usually with the nautilus menu on top, some times a screen with only the background). It seems that something is not initialized because if I open a terminal and try /usr/lib/nux/unity_support_test -p, I get: OpenGL vendor string: Mesa Project OpenGL renderer string: Software Rasterizer OpenGL version string: 2.1 Mesa 7.11 Not software rendered: no Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: no GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no After logging out and coming back unity seems to work and /usr/lib/nux/unity_support_test -p gives: OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD CEDAR OpenGL version string: 2.1 Mesa 7.11 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes So it looks like the Gallium 3D driver is only loaded on the second try (sometimes I need to try 3 or more times). Another interesting catch is that 3D seems to be working even in the first try when unity does not (if I call glxgears it give the same number of frames it gives in the second try when unity_support_test says that Gallium driver is working). Two other interesting notes is that unity-2d works always for me (and I don't know why it is not started in the first run, as unity_support_test is saying that regular unity is not supported). Gnome shell also seems to work always. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/883225 Title: Unity looks strange when used in multiseat setup To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/883225/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs