Re: Linux 3.11-rc2 (acpi backlight, revert)
From: Daniel Vetter
Date: Thu Jul 25 2013 - 10:46:36 EST
On Thu, Jul 25, 2013 at 07:43:17AM -0700, Kamal Mostafa wrote:
> On Thu, 2013-07-25 at 15:00 +0200, Rafael J. Wysocki wrote:
> > On Monday, July 22, 2013 09:54:21 PM Rafael J. Wysocki wrote:
> > > On Monday, July 22, 2013 11:11:54 AM Linus Torvalds wrote:
> > > > On Mon, Jul 22, 2013 at 6:02 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> > > > >
> > > > > Linus, do you want me to send a pull request reverting 8c5bd7a and efaa14c?
> > > >
> > > > Yes, but let's wait a while. Not because I think we'll fix the problem
> > > > (hey, miracles might happen), but because I think it would be useful
> > > > to couple the reverts with information about the particular machines
> > > > that broke (and the people who reported it). So that when we
> > > > inevitably try again, we can perhaps get some testing effort with
> > > > those machines/people.
> > > >
> > > > It doesn't seem to be a show-stopped for a large number of people, so
> > > > there's no huge hurry. I'd suggest doing the revert just in time for
> > > > rc3, but waiting until then to gather info about people who see
> > > > breakage.
> > > >
> > > > Sound like a plan?
> > >
> > > Yes, it does.
> > OK, time to revert I guess.
> > James, Kamal, Steven, Jörg, Martin, Kalle, please check if the apppended patch
> > fixes the backlight for you.
> Yes, this revert patch does re-enable backlight control for the affected
> Dell XPS13 models.
Are these the same models that neeed the special quirk to not write
PCH_PWM_ENABLE? Or do they need both?
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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