From: Marc Milgram <mmilgram@redhat.com>
To: intel-gfx@lists.freedesktop.org
Subject: Screen extremely dim on Dell Latitude D630 after upgrading to Linux kernel-3.14
Date: Thu, 22 May 2014 16:17:49 -0400 [thread overview]
Message-ID: <537E5B6D.1030408@redhat.com> (raw)
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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@intel.com <mailto:jani.nikula@intel.com>>
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@intel.com <mailto:jani.nikula@intel.com>>
Reviewed-by: Imre Deak <imre.deak@intel.com <mailto:imre.deak@intel.com>>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch <mailto:daniel.vetter@ffwll.ch>>
:040000 040000 0aae5515ca62ff1bfd2e1c2769e30c58b016ffeb 01c2f8cd145f8cf29730908d52e7e89b787a059e M drivers
I can find my way around the kernel, but haven't hit this area before.
Any help is appreciated.
Marc Milgram
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next reply other threads:[~2014-05-22 20:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-22 20:17 Marc Milgram [this message]
2014-05-26 9:57 ` Screen extremely dim on Dell Latitude D630 after upgrading to Linux kernel-3.14 Jani Nikula
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