On Mon, 2013-07-22 at 21:54 +0200, 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 [...] 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. > > Rafael Hi Rafael- For your reference... As James Hogan reported, those ACPI changes break backlight control on the "Dell XPS13" Ivy Bridge models (the Sandy Bridge XPS13 model is not affected). I confirm that reverting 8c5bd7a and efaa14c fixes it again. Also FYI... On Mon, 2013-07-22 at 00:08 +0100, James Hogan wrote: > Note that acpi_video0 only worked because I was applying "[PATCH] > drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight" [1], so > strictly speaking mainline already didn't work. > [1] http://lkml.org/lkml/2013/7/19/748 That patch is now queued up in drm-intel/drm-intel-fixes, so should be making its way to mainline soon. -Kamal
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