Hi,
Since 3.18-rc1 backlight is dark after resume from suspend. This is on a Samsung
laptop with i5 IvyBridge
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
I have bisected this problem to the following commit:
73580fb764c4213d305c0d36bd8f856ae631eb42 is the first bad commit
commit 73580fb764c4213d305c0d36bd8f856ae631eb42
Author: Jani Nikula <jani.nik...@intel.com>
Date: Tue Aug 12 17:11:41 2014 +0300
drm/i915/dp: make backlight bl_power control power sequencer backlight
This lets the userspace switch off the backlight using the backlight
class sysfs bl_power file. The switch is done using the power sequencer;
the backlight PWM, and everything else, remains enabled. The display
backlight won't draw power, but for maximum power savings the encoder
needs to be switched off.
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
Reviewed_by: Clinton Taylor <clinton.a.tay...@intel.com>
Tested_by: Clinton Taylor <clinton.a.tay...@intel.com>
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
Thanks,
Ortwin
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