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Bug#387545: [powerpc] Backlight control no longer works on PowerBook6,8



> On Fri, Sep 15, 2006 at 12:08:29AM +0200, Michael Tautschnig wrote:
> > Package: linux-image-2.6.18-rc6-powerpc
> > Version: 2.6.17+2.6.18-rc6-0experimental.1snapshot.7391
> > 
> > The backlight control of my PowerBook, as controlled via pbbuttonsd/gtkpbbuttons
> > does not work anymore using the above kernel image. gtkpbbuttons does display
> > the icon, but the bar displaying the status remains at 0 (and the light does not
> > change as well).
> > 
> > I noticed that there was a major rewrite of the backlight control for 2.6.18, so
> > it is probably an upstream issue.
> > 
> > Regards,
> > Michael
> > 
> 
> as aboves is latest upstream might be very well interested.
> please be so kind to feed bugzilla.kernel.org
> providing a pointer to your bug would be cool
>

I'm sorry, but in this case it isn't an upstream issue. Actually it is a
specific problem of the Debian-kernel here:

The config lacks CONFIG_PMAC_BACKLIGHT_LEGACY=y , which is obviously required
for pbbuttonsd to work. Future versions of pbbuttonsd will hopefully not require
this option. However, some of the patches applied to the Debian-flavor of the
kernel even remove this config option, thus it currently can't even just be
added to the config options.

Just to reiterate: I built a vanilla 2.6.18-rc7 and using the above option
pbbuttonsd continues to work as expected.

Regards,
Michael


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