Intel GPU powersaving

[Fabian Deutsch]

Hello.

Am Dienstag, den 23.02.2010, 22:13 +0000 schrieb Matthew Garrett:
> We tried some new Intel powersaving code in the F12 cycle, but it caused 
> a range of problems including screen flickering and crashes. I've 
> reworked this a little and it seems to work on a machine that had 
> problems in the past, so I'd like to try it again. If anyone with an 
> Intel GPU (except GMA500, 810, 815 and 830) would like to give the F13 
> kernels at http://koji.fedoraproject.org/koji/taskinfo?taskID=2009928 a 
> go and let me know if they result in graphical glitches or hangs that 
> you don't otherwise have with F13, that would be a great help.

I'm using an Iintel GMA 945 (Macbook 2.1), the above kernel does not
behave different than 2.6.33-0.46. That means:
- GDM works (again)
- No flickering at boot
- Logging in to GNOME blanks the screen, even a VT switch does not bring
the backlight(?) back. (might this just be an gnome-power problem?
related to ...)
- ... adjusting brightness does not work.

All in all the intel driver was quite unstable since 2.6.31-5.
https://bugzilla.redhat.com/show_bug.cgi?id=558439

Greetings
- fabian
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