Re: no backlight on radeon after recent kernel "upgrade"s

From: Henrique de Moraes Holschuh
Date: Thu Feb 22 2007 - 09:38:50 EST

On Thu, 22 Feb 2007, Richard Purdie wrote:
> On Thu, 2007-02-22 at 01:13 +0000, James Simmons wrote:
> > > Richard Purdie <rpurdie@xxxxxxxxx> writes:
> > >
> > > > If FB_RADEON_BACKLIGHT wasn't set for 2.6.20, can you try 2.6.21-rc1
> > > > with that option disabled?
> > >
> > > i don't have my laptop with me but i am pretty sure
> > > FB_RADEON_BACKLIGHT wasn't set for 2.6.20 (i think it showed up as a
> > > new option when i did make oldconfig). i'll post the difference when i
> > > get home tonight and also try disabling it.
> >
> > Correct. You need to enable the backlight for the radeon card.
> The problem is when that is set, the device doesn't work as they need
> the ibm ACPI driver, not the raedon one.

They need the ibm-acpi one for brightness, and the radeon one for on/off. I
want a way to join that all together in a single place, if at all possible.

"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at