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

[Andy Whitcroft]

On Mon, Dec 22, 2008 at 07:35:18AM -0700, Tim Gardner wrote:
> 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.

Good point.  I have proposed this for stable 2.6.27 inclusion.

-apw