Ok, well, it is trying to use llvmpipe. A fairly recent change in Nux handles this now (http://bazaar.launchpad.net/~unity- team/nux/trunk/revision/810#debian/50_check_unity_support).
Looking at the gnome-session.log, the failure is occurring when the open plugin is asking if the X session supports OpenGL/GLX and it is returning false which causes the opengl plugin to fatally error out. From the opengl plugin: glXGetConfig (dpy, visinfo, GLX_USE_GL, &value); if (!value) { compLogMessage ("opengl", CompLogLevelFatal, "Root visual is not a GL visual"); XFree (visinfo); screen->handleCompizEvent ("opengl", "fatal_fallback", o); setFailed (); return; } I suspect something in llvmpipe is misbehaving, but what it could be is beyond my knowledge. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1212821 Title: Unity fails to load on old hardware on Saucy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1212821/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs