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Re: Test patch for sleep on Aluminium PowerBooks

On Wed, 2004-10-27 at 08:47 +0200, Colin Leroy wrote:
> On 27 Oct 2004 at 15h10, Benjamin Herrenschmidt wrote:
> Hi Ben, 
> > This is an experimental patch against 2.6.9. It concerns the ATI based
> > Aluminium PowerBook. The nVidia based ones aren't concerned at all, and
> > the iBook G4 will have to wait a bit more for me to get the video wakeup
> > code right.
> Aww, can't wait :)
> Btw, looks like the patch you sent contains changes that have been 
> integrated post-2.6.9 (2.6.10-rc1) ? I tried 2.6.10-rc1 on my iBook 
> G4 yesterday, and had video-related problems: when darkening the 
> screen (using the Fn keys or by leaving the laptop alone enough time),
> the screen displays garbage at level 0 (instead of going black as 
> previously), the sort of thing that happened to me when I messed with
> mach64 registers when working on mplayer. You know, screen goes 
> progressively white, with beautiful color patterns expanding slowly
> all over the screen. (can't find an image on google, sorry).
> When re-enabling the screen, it's ok.
> I also got lots of gcc internal errors when compiling linux using 2.6.10-rc1, 
> but that must be unrelated :)

Well, I'd suggest not running that kernel until paul's signal fix gets
in, there is a FP register corruption in there... There are other issues
with 2.6.10 currently, so it's not really a good kernel to play with for

I'm surprised by your backlight problems. I've simplified the backlight
& blanking code a bit, it should be better now instead of worse ... Can
you tweak around maybe and tell me if you find a precise register bit
that I'm not toggling properly ?

(Use my 2.6.9 sleep patch to get the up-to-date radeonfb).


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