Takashi Iwai 9370dd38fd drm/i915: Fix eDP blank screen after S3 resume on HP desktops ...

commit 6db65cbb94 upstream.

This patch fixes the problem on some HP desktop machines with eDP
which give blank screens after S3 resume.

It turned out that BLC_PWM_CPU_CTL must be written after
BLC_PWM_CPU_CTL2.  Otherwise it doesn't take effect on these
SNB machines.

Tested with 3.5-rc3 kernel.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49233

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-07-16 08:47:39 -07:00

..

drm

drm/i915: Fix eDP blank screen after S3 resume on HP desktops

2012-07-16 08:47:39 -07:00

stub

i915: select VIDEO_OUTPUT_CONTROL for ACPI_VIDEO

2011-04-13 09:10:25 +10:00

vga

Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

2011-05-24 12:06:40 -07:00

Makefile

gpu: Add Intel GMA500(Poulsbo) Stub Driver

2010-10-26 11:00:13 +10:00