Bug#415627: xorg crash on backwards time adjustment
Robert Henney wrote:
> Package: xorg
> Version: 1:7.1.0-15
> when the system clock is adjusted backwards by a significant period of
> time (eg. 20 minutes), the X server will immediately crash. this is
> reproducible on my computer every time. I suspect it has to do with
> acpi event handling, although allowing the normal screen blank to occur
> on its own and then hitting any key to "wake" the display back up goes
> without any noticeable problems. it's only when forcing the clock back.
There have other reports like this one in the past. For instance,
recently, "Bug#412275: no display and system freezes after adjusting
time with KDE clock on 945GM graphic chip". We could probably merge
them, even if the symptoms are not exactly what your seeing. From what I
remember, there have been some attempts to fix these problems, but it
didn't actually fix the problem.
I didn't find a relevant bug upstream though.