Re: PowerBook G4 17" weirdness
On Thu, 2005-08-25 at 09:55 +0200, Michael Schmitz wrote:
> > > something odd happened to me today after installing the latest OsX
> > > security update: after the mandatory reboot, the backlight of my PB would
> > > only shortly flash on, then immediately turn off while in OF (regardless
> > > of whether I booted into the OF console, into the yaboot menu, or straight
> > > into MacOS after zapping the PRAM). fblevel in linux wouldn't change
> > > anything either.
> > >
> > > The only thing that helped was attaching an external monitor via the
> > > DDI/VGA connector and rebooting.
> > >
> > > Any explanations?
> >
> > No idea, that's really strange... Looks like the nvram saved backlight
> > was fucked up by the video driver update...
>
> Must've been more than that - neither X nor Linux fblevel/backlight could
> talk to the backlight controller, apparently. The backlight on these
> machines isn't controlled via the PMU, rather via the graphics chipset,
> right?
Yes. Is it an ATI based or an nVidia based model ?
Ben.
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