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    SubjectRe: Linux 3.11-rc2 (acpi backlight, revert)
    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@sisk.pl> 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?
    -Daniel
    --
    Daniel Vetter
    Software Engineer, Intel Corporation
    +41 (0) 79 365 57 48 - http://blog.ffwll.ch
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