[Intel-gfx] [PATCH] i915: ensure that VGA plane is disabled

[Daniel Vetter]

On Wed, Dec 19, 2012 at 11:03:41AM +0100, Krzysztof Mazur wrote:
> Some broken systems (like HP nc6120) in some cases, usually after LID
> close/open, enable VGA plane, making display unusable (black screen on LVDS,
> some strange mode on VGA output). We used to disable VGA plane only once at
> startup. Now we also check, if VGA plane is still disabled while changing
> mode, and fix that if something changed it.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57434
> Signed-off-by: Krzysztof Mazur <krzysiek at podlesie.net>

*insert laments about BIOSen doing horrible things*

Thanks a lot for digging into this and coming up with the patch, merged to
-fixes for 3.8 with a cc: stable, so should show up reasonable quickly in
a stable kernel near you.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch