Comment 46 for bug 189260

Sigh, reopening. Maybe I was a bit vague last time, but it's not like we need to pull the whole set:

commit ba8bbcf6ff4650712f64c0ef61139c73898e2165
Author: Jesse Barnes <email address hidden>
Date: Thu Nov 22 14:14:14 2007 +1000

    i915: add suspend/resume support

    Add suspend/resume support to the i915 driver. Moves some of the
    initialization into the driver load routine, and fixes up places where we
    assumed no dev_private existed in some of the cleanup paths. This allows
    us to suspend/resume properly even if X isn't running.

    Signed-off-by: Dave Airlie <email address hidden>

although jbarnes says that there are others that are useful:

23:22 < tjaalton> jbarnes: was the commit "i915: add suspend/resume support the one that should fix backlight
                              not turning on after resume?
23:36 < jbarnes> tjaalton: yah that's the one
23:36 < jbarnes> tjaalton: there are a few subsequent fixes in the drm tree in the past week or so that also help

Subject: Fix vblank enable/disable callbacks
X-Git-Url: http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commitdiff;h=79d69285202b55f269aa88a6bcda257257c9dee3

Subject: i915: save/restore interrupt state
X-Git-Url: http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commitdiff;h=8b6c96dedd4ba5dfbfec6a7c831d566e31d28781

Subject: Fix saveGR array size
X-Git-Url: http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commitdiff;h=6f19473191ae543fcc199d252c5865c0734d38ad

Subject: Restore pipeconf regs unconditionally
X-Git-Url: http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commitdiff;h=d63b57749f097b36df04c6beff9b35a1dd859523

Subject: [915]: more registers for S3 (DSPCLK_GATE_D, CACHE_MODE_0, MI_ARB_STATE)
X-Git-Url: http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commitdiff;h=5d8c754bc2c720d70bbdeca6b294660105717a62

those will get in 2.6.25-rc3.