Bug#411877: nv video driver garbles screen when I wake up
Typically when I go to bed I close my laptop CRT screen. Sometimes when
I wake up I open it to find that the screen is garbled; the left side is
blank, and the right side shows some unusable colors... Some
combination of c+a+f1, fn+f7 ("font change"), fn+f8 ("crt/lcd switch")
usually fixes it. The one case I can remember where it didn't fix it, I
don't think I used fn+f8. This could also be a kernel problem, I guess
I'll test by switching to a VT at night for a week.