x3100 resume results in black screen (2.6.25 kernel)

[Khashayar Naderehvandi]

Running ubuntu hardy with a 2.6.25 kernel causes the backlight of my laptop
to remain black after resume. Switching VTs does not help.

Hardy ships with a 2.6.24 kernel which works just fine, I installed a 2.6.25
kernel since it causes far fewer wakeups (as observed with powertop).

I have also tried the 2.6.24 kernel with drm modules from git. This also
fails on resume.

The laptop is a dell xps m1330 with an x3100 chipset.

Any ideas?

Regards,

Khashayar
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