Comment 3 for bug 206999

If it happens again, the previous Xorg.0.log is stored to /var/log/Xorg.0.log.old usually.

There have been several recent reports of issues with 945... perhaps when we get a fix for that, these issues will all go away.

It would be very helpful if you could re-test alpha4 and alpha 5 and see in which of them the issue first started; this would help narrow down which patch might have generated the problem.