backlight control lost after resume - screen black after hibernate
On Fri, 19 Aug 2011 16:49:49 +0200, Stefan Rutzinger wrote:
> I run Wheezy on a quite new sony vaio PCG laptop with GeForce GT 555M
> (GF106) and a second intel 2D video card and nouveau FB.
> After resume from suspend or hibernate, the backlight control gets lost.
> I still can echo and cat to /sys/class/backlight/acpi_video[0,1]/ but it
> has no effect. After a fresh boot, everything behaves as expected and
> e.g. FN-Brightness keys work well.
It can be a bug in the nouveau driver, like this:
New: Backlight off after suspend-to-disk on Powerbook
or this one:
Brightness stuck to low value after suspend/resume
- Try blacklisting nouveau for hibernating
- Try with another driver (the nvidia closed one)
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