https://bugs.freedesktop.org/show_bug.cgi?id=33309

--- Comment #29 from Daniel Vetter daniel@ffwll.ch 2012-07-02 13:29:18 PDT --- (In reply to comment #28)

are there any news on this issue? The 3.4 and 3.5-rc series seem stable wrt this issue, but unfortunately something broke resume from s2ram badly, the backlight stays off and the machine does not respond even to SysRq and I need to do a hard power-off.

That's good&bad news. Can you try to bisect the backlight regression that has been introduce in 3.4 and open a new bug report? That usually helps in fixing it ...