Here's some output from my dmesg regarding Xorg as well; not sure if that helps at all...
[ 3.576578] Pid: 1127, comm: Xorg Tainted: P O 3.5.0-11-generic #11-Ubuntu [ 3.576579] Call Trace: [ 3.576583] [<ffffffff81051c4f>] warn_slowpath_common+0x7f/0xc0 [ 3.576585] [<ffffffff81051caa>] warn_slowpath_null+0x1a/0x20 [ 3.576587] [<ffffffff81043435>] __ioremap_caller+0x335/0x380 [ 3.576643] [<ffffffffa0de3cc5>] ? os_map_kernel_space+0x85/0xf0 [nvidia] [ 3.576645] [<ffffffff810434b4>] ioremap_cache+0x14/0x20 [ 3.576686] [<ffffffffa0de3cc5>] os_map_kernel_space+0x85/0xf0 [nvidia] [ 3.576729] [<ffffffffa0daf918>] _nv014877rm+0x76/0x92 [nvidia] [ 3.576765] [<ffffffffa07dea1e>] ? _nv009673rm+0x89/0x142 [nvidia] [ 3.576800] [<ffffffffa07deb8f>] ? _nv014448rm+0xb8/0x102 [nvidia] [ 3.576835] [<ffffffffa07df042>] ? _nv014486rm+0x58/0x9e [nvidia] [ 3.576871] [<ffffffffa07daaa8>] ? _nv014458rm+0xbe/0x2f0 [nvidia] [ 3.576906] [<ffffffffa07dad85>] ? _nv014491rm+0xab/0x174 [nvidia] [ 3.576940] [<ffffffffa07dae9e>] ? _nv014457rm+0x50/0x5d [nvidia] [ 3.576976] [<ffffffffa07e1072>] ? _nv014432rm+0x82d/0x96b [nvidia] [ 3.577018] [<ffffffffa0dbf7ef>] ? _nv012658rm+0x174/0x573 [nvidia] [ 3.577059] [<ffffffffa0dbf76d>] ? _nv012658rm+0xf2/0x573 [nvidia] [ 3.577105] [<ffffffffa082b261>] ? _nv004021rm+0x1bb/0x19e9 [nvidia] [ 3.577196] [<ffffffffa0b82ef9>] ? _nv004046rm+0x8690/0xae8b [nvidia] [ 3.577284] [<ffffffffa0b818bb>] ? _nv004046rm+0x7052/0xae8b [nvidia] [ 3.577316] [<ffffffffa07b3d0c>] ? _nv009980rm+0x25/0x40 [nvidia] [ 3.577358] [<ffffffffa0dbf501>] ? _nv014932rm+0x7c9/0x943 [nvidia] [ 3.577399] [<ffffffffa0dc04af>] ? _nv001095rm+0x42a/0x6b4 [nvidia] [ 3.577441] [<ffffffffa0db8ef4>] ? rm_init_adapter+0xac/0x146 [nvidia] [ 3.577481] [<ffffffffa0dd8f74>] ? nv_kern_open+0x4b4/0x800 [nvidia] -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/1039148 Title: When logging in to Unity, the Desktop session crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1039148/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp