No backlight since linux-4.2.4 - drivers/gpu/drm/radeon/atombios_encoders.c

[Michael Burian]

On 10/27/15 17:43, Alex Deucher wrote:
> 
> I see the problem.  We don't enable native backlight control on older
> asics like yours by default.  Does the attached patch help?
> 

Yes, backlight is on again. (tested against mainline: 
858e904bd71dd0057a548d6785d94ce5ec4aeabd)

thanks