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After upgrading to linux Kernel-3.14, the screen on my Dell Latitude
D630 was nearly unreadably dim. When I Boot the 3.13 kernel, my
screen is bright. I opened a Bug here: https://bugzilla.redhat.com/show_bug.cgi?id=1094066 and others have chimed in that they have the same problem. I bisected the kernel, and found the following commit is responsible for this problem: b35684b8fa94e04f55fd38bf672b737741d2f9e2 is the first bad commit commit b35684b8fa94e04f55fd38bf672b737741d2f9e2 Author: Jani Nikula <jani.nikula@xxxxxxxxx> Date: Thu Nov 14 12:13:41 2013 +0200 drm/i915: do full backlight setup at enable time We should now have all the information we need to do a full initialization of the backlight registers. v2: Keep QUIRK_NO_PCH_PWM_ENABLE for now (Imre). Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Reviewed-by: Imre Deak <imre.deak@xxxxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> :040000 040000 0aae5515ca62ff1bfd2e1c2769e30c58b016ffeb 01c2f8cd145f8cf29730908d52e7e89b787a059e M driversI can find my way around the kernel, but haven't hit this area before. Any help is appreciated. Marc Milgram |
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