Re: Question about pbbuttonsd and blankscreen

[Wolfram Q. <wo...@mi...>]

Hi James,

On Fri, Dec 09, 2005 at 11:30:22AM -0500, James Turner wrote:
> Sorry if this has already been sent, I think there may have been an =20
> error.
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> Hi, I have a 12in Rec C PowerBook with an nVIDIA GeForce FX Go5200.  =20
> When running the 0.7.2 of pbbuttonsd on both Debian and Ubuntu I am =20
> unable to control the brightness of my display.  Also when I set =20
> pbbuttonsd to blank my screen on lid close this does not work.  I am =20
> aware that suspend to ram does not currently work with nvidia.  Any =20
> help would be great.  Thanks.

I guess you are not using the proper framebuffer. With recent kernels
you have three possible framebuffers:
1) offb: This is a fallback which provides only minimal options. There is
         no brightness control available
2) rivafb: This is the old driver which is at the same time the only one
         usable on ppc ATM. IIRC it is not compiled automatically on
	 recent kernels anymore. I'm using it happily on 2.6.13.
3) nvidiafb: This is the new implementation which is compiled normally.
	 It is buggy on ppc, so most times it doesn't take over on boot
	 time and leaves offb in place. This is what happens on your
	 machine I think. I heard benh submitted some fixes for this one
	 to be included in 2.6.15, but I did not test them yet.

So, just to be sure, could you post the output of cat /proc/fb on your
machine? Make sure you use rivafb, and all should be fine.

With best regards,

Wolfi
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> -----------------------------------------------------------
> James Turner <ja...@nu...>
>=20
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