Suspend to RAM regression (bisected)

[Carlos R. Mafra]

Hi,

There is a suspend to RAM regression in the latest Linus tree of
17th of july (5b664cb235e). It was working perfectly with 
2.6.26.

If I suspend to RAM from X with 'echo mem > /sys/power/state' the
screen comes back very dark and I can't read anything.
If I switch to the text console and then go back to X this problem
is fixed and everything is ok.

I bisected this regression down to c0e09200dc0813972442e550a5905a132768e56c
("drm: reorganise drm tree to be more future proof"), and I checked that
reverting this commit (it reverts cleanly) really makes the regression go
away.

The laptop is a Vaio 64bit with Intel GM965/GL960 graphics card.
More information about my laptop can be found here:
http://www.ift.unesp.br/users/crmafra/dmesg-good.txt

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