[PATCH 0/1] [Intrepid SRU] LP#276943 -- fix resume for intel GM965/GM45

[Tim Gardner]

Andy Whitcroft wrote:
> Systems with Intel graphics, specifically those with GM965/GM45 arrays,
> suffer from resume hangs.  These systems reliably lock up with a black
> screen, showing a cursor and often the background of the unlock window.
> Reume is always unsuccessful.  This seems to be caused by a lack of state save over suspend/resume for these chipsets.
> 
> Following this email is a patch for this issue.  This saves this additional
> GPU state during suspend.  This is a GPU specific modification only
> triggering where the hardware is detected.  Two community testers, plus
> myself, report this as fixing their resume problems.
> 
> Proposing this for SRU to Intrepid.
> 
> -apw
> 
> Andy Whitcroft (1):
>   i915: Save/restore MCHBAR_RENDER_STANDBY on GM965/GM45
> 
>  drivers/gpu/drm/i915/i915_drv.c |    9 +++++++++
>  drivers/gpu/drm/i915/i915_drv.h |    4 ++++
>  2 files changed, 13 insertions(+), 0 deletions(-)
> 
> 

ACK - I'm surprised that this didn't come via stable at kernel.org. Please
make sure they are aware of this patch. It appears to fulfill all of the
requirements for a stable update.

rtg
-- 
Tim Gardner tim.gardner at canonical.com