Comment 13 for bug 554023

We've got a couple of problems mixed up here. X bugs are generally highly hardware-specific - even from the same vendor - so it's almost always unhelpful to mix Intel, nvidia, and ati bugs as has happened here! If you've got a non-Intel system and are experiencing a bug, please file a new bug rather than add comments here. Your problem will almost certainly be different.

@gmore - Since you can SSH into your machine while it's broken, could you please boot up your broken system then SSH in and run “apport-collect 554023”? That will attach all the interesting logs we'll need for diagnosis.