The upstream bug https://bugs.freedesktop.org/show_bug.cgi?id=97486
And the issue could be fixed by the following 2 commits in drm-intel-next-queued.
commit 32b421e79e6b546da1d469f1229403ac9142d695 Author: Jani Nikula <email address hidden> Date: Mon Sep 19 13:35:25 2016 +0300
drm/i915/backlight: setup and cache pwm alternate increment value
and
commit e29aff05f239f8dd24e9ee7816fd96726e20105a Author: Shawn Lee <email address hidden> Date: Mon Sep 19 13:35:26 2016 +0300
drm/i915/backlight: setup backlight pwm alternate increment on backlight enable
The upstream bug /bugs.freedeskt op.org/ show_bug. cgi?id= 97486
https:/
And the issue could be fixed by the following 2 commits in drm-intel- next-queued.
commit 32b421e79e6b546 da1d469f1229403 ac9142d695
Author: Jani Nikula <email address hidden>
Date: Mon Sep 19 13:35:25 2016 +0300
drm/ i915/backlight: setup and cache pwm alternate increment value
and
commit e29aff05f239f8d d24e9ee7816fd96 726e20105a
Author: Shawn Lee <email address hidden>
Date: Mon Sep 19 13:35:26 2016 +0300
drm/ i915/backlight: setup backlight pwm alternate increment on backlight enable