mhocko at suse.cz
Tue Jan 11 09:44:34 PST 2011
On Tue 11-01-11 17:39:42, Chris Wilson wrote:
> On Tue, 11 Jan 2011 18:19:17 +0100, Michal Hocko <mhocko at suse.cz> wrote:
> > [Let's CC Indan - author of the bugzilla patches]
> > On Thu 06-01-11 11:48:16, Michal Hocko wrote:
> > > Hi,
> > >
> > > On Tue 04-01-11 17:15:45, Linus Torvalds wrote:
> > > [...]
> > > > We did have another revert to fix hopefullythe last "blank screen"
> > > > regression on intel graphics.
> > >
> > > It seems that there is still a regression for intel graphic cards
> > > backlight. One report is https://bugzilla.kernel.org/show_bug.cgi?id=22672.
> > > I can reproduce the problem easily by:
> > > xset dpms force standby; sleep 3s; xset dpms force on
> > >
> > > backlight doesn't get up (there is really dark picture though which
> > > doesn't get brighter by function keys which work normally) after dpms on
> > > until I close and open lid.
> > >
> > > The problem wasn't present in 2.6.36
> > I can confirm that this problem is not present if both patches from
> > bko#22672 are applied on top of 2.6.37 kernel.
> > I haven't tried both patches separately, but I can surely try it if it
> > makes any sense.
> The second patch is wrong in that it will prevent changing resolutions
> using the panel fitter. The first patch looks along the right lines, just
> misses the possibility that the backlight can be modified by other means.
> So hopefully, you just need the first patch.
I would have bet I have tested the 1st patch but let me double check.
The 2nd patch alone doesn't fix the problem.
> Chris Wilson, Intel Open Source Technology Centre
SUSE LINUX s.r.o.
190 00 Praha 9
More information about the dri-devel