Yesterday my machine lost power. When I brought it back up there was the usual repairing of orphaned inodes but on subsequent reboots everything seemed the same. The problem is when I try to load X (I don't use a login manager).
After starting X I get a blank screen. I don't loose the backlight, I'm unable to switch between tty's. I have to use magic SysRq keys to shut down properly.

I have checked the logs and I'm having trouble locating the problem

truncated messages log:
http://bpaste.net/show/434420/
I really started tinkering with it July 4th. On line 78 you can see I begin shutting it down, so the call traces are pretty much the relivant information.

Xorg log:
http://bpaste.net/show/434431/
doesn't seem to tell me anything useful but here it is

dmesg:
http://bpaste.net/show/434433/
I wasn't sure if line 9 was atypical

It may be that the nvidia driver config is corrupted. Try booting to single user and running nvidia-xconfig.

I might even consider removing the package and installing it again. There isn't a 100% sure way to know that all files have been corrected.

Well I still don't know exactly what happened but re-emerging nvidia-drivers fixed the problem. Thanks!!