[PATCH v2] acpi-video: Add a parameter to not register the backlight sysfs interface

Hans de Goede hdegoede at redhat.com
Tue Jun 9 14:54:45 PDT 2015


On 06/09/2015 11:10 AM, Aaron Lu wrote:
> On Tue, Jun 09, 2015 at 10:32:25AM +0200, Hans de Goede wrote:
>> On some systems acpi-video backlight is broken in the sense that it cannot
>> control the brightness of the backlight, but it must still be called on
>> resume to power-up the backlight after resume.
> All the video module does on resume is a backlight set operation, it
> can't control backlight but can turn on the screen on resume? Hmm...
> I'll ask Sylvain to attach acpidump, let's see if there is anything
> special there.

Ok, lets see what comes out of that. Note in the mean time Sylvain has
attached his acpidump.



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