[Bug 68471] Display extremely dark on Dell XPS 13 since 3.10 Kernel in EFI mode

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=68471

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #21 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Dennis Jacobfeuerborn from comment #20)
> After building a kernel from the drm-nightly-branch i can confirm that with
> that kernel things seem to work as expected.

Queued for 3.14.

> There is one minor difference though: The max_backlight value is 4882 and
> under the 3.9.9 kernel I can use the keys to increase brightness until it
> reaches 4882. On the drm-intel-nightly kernel however the actual brightness
> only goes up to 4845 using the keys but I can echo 4882 into the brightness
> file and actual_brightness will reflect that. Since the brightness is only
> changed in increments it seems under 3.9.9 some sort of code like "if
> (brightness <= max_brightness_inc) ..." is used but in the new code the <=
> changed to < maybe which would only allow you to reach max_brightness_inc-1?

Our driver does not have any code handling the keys or the increments.

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