Created attachment 36092 [details] dmesg 2.6.37-rc1 [ 1347.388149] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id Other info: http://bugs.freedesktop.org/show_bug.cgi?id=26812
Created attachment 36102 [details] lspci-vvnn_2.6.37-020637rc1-generic
The kernel is reporting a userspace error. One should look closely at the patches Ubuntu applies to the DDX.