@Bryce Harrington -- this patch is a backport from a mainline commit,
this is our commit which links to it:
i915: Save/restore MCHBAR_RENDER_STANDBY on GM965/GM45
commit 881ee9889c8b98671c5491e43666bf5d4f78a180 upstream
This register is set by the 2D driver to prevent lockups, and so it needs to
be preserved across suspend/resume too. This makes my X200s work.
Signed-off-by: Keith Packard <[email protected]>
Signed-off-by: Eric Anholt <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Andy Whitcroft <[email protected]>
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Resume from suspend doesn't not work on the Mobile 4 Series chipsets
https://bugs.launchpad.net/bugs/276943
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