Re: backlight control and debian kernel 2.6.10
On Tue, Mar 01, 2005 at 12:49:35PM +0100, Guido Guenther wrote:
> On Tue, Mar 01, 2005 at 11:22:55AM +0100, Djoume SALVETTI wrote:
> > Le mardi 03/01/05 Guido Guenther <email@example.com> a écrit :
> > > Hi Djoume,
> > > On Tue, Mar 01, 2005 at 09:28:50AM +0100, Djoume SALVETTI wrote:
> > > > I've notice that despite kernel image 2.6.10 include and activate
> > > > (CONFIG_PMAC_BACKLIGHT=y) Guido Guenther backlight control patch, I'm
> > > > not able to control it while using this kernel (I've
> > > > append="video=rivafb:1024x768-8@75" in my yaboot.conf).
> > > Could you use 'strace fblevel <value>' to see what error code the kernel
> > > actually returns?
> > sure :
> > gotan:/home/djoume# fblevel 10
> > ioctl PMU_IOC_SET_BACKLIGHT: No such device
> O.k. you're using offb instead of rivafb then. "fbset -i" will tell you
> for sure. I assume passing "video=rivafb" doesn't help, since rivafb
> can't take over from offb, right? Compiling in both definitely works.
> Could you check how radeonfb is being handled in the debian kernels?
Radeonfb is builtin, as is offb, but rivafb is not.
I suppose that you can say something like video=offb:off or something such ?
I suppose this means i need to rebuild 2.6.8-11 with rivafb builtin ?