Ubuntu
xserver-xorg-video-ati package

  1. Bug #434956
  2. Comment #52

Comment 52 for bug 434956

Revision history for this message
Steve Roberts (drgrumpy) wrote : Re: screen backlight off after resume-from-suspend when using ATI KMS

Not sure if mine is exactly the same issue:

Maverick 64 bit, ATI graphics card

Suspend and hibernate worked on 10.04. Following upgrade (clean install) failed to resume from suspend and hibernate. pm-log indicated success, computer powers up, but display is blank.

Could successfully suspend/hibernate and resume from recovery console using pm-suspend/hibernate.

Adding radeon.modeset=0 meant that suspend and resume now work.... But this messed up my dual monitor configuration and had to create xorg.conf file.