I'm suspending my T30 to RAM using the hibernate script via /sys/power/state. The problem is, this doesn't turn the screen off. It blanks it, but the backlight is still on. I've tried xset dpms force off as well -- it does the same thing.
When I just close the lid without suspending the machine first, it turns the display off. But not if the machine is already suspended.
I think I've read about some similar bug in a X.org bugzilla concerning the radeon drive (Mobility 7500/M7 here), but AFAIR it had only one reporter and no activity...
Thanks anyone for suggestions!