[Bug 68355] [HSW ULT] eDP backlight regression at 1920x1080

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68355

--- Comment #10 from Rafael J. Wysocki <rjw at sisk.pl> ---
On Thursday, August 22, 2013 11:00:17 PM bugzilla-daemon at freedesktop.org wrote:
> https://bugs.freedesktop.org/show_bug.cgi?id=68355
> 
> --- Comment #9 from Trevor Bortins <enabfluw at gmail.com> ---
> I compiled the latest from the master branch, with the offending commit
> reverted, and it appears to work.
> 
> Any ideas why?  Since I'm not part of the project, I don't know what that code
> does.

It causes some code that was previously skipped with the acpi_backlight=vendor
command line option to be executed on your machine.  That code, in turn,
executes AML methods that modify the platform backlight settings.

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