Ubuntu
xserver-xorg-video-intel package

  1. Bug #256142
  2. Comment #28

Comment 28 for bug 256142

Revision history for this message
In , Ben Gamari (bgamari) wrote :

Created an attachment (id=12983)
Register dump during blank screen

I finally managed to get the bug to recur. This time the screen turned straight white. This time I managed to SSH in to the machine and grab a register dump as well. Moreover, I can confirm that suspending and resuming the machine fixes the issue. Additionally I know for a fact that backlight control is not the issue:
  1) When I allowed the machine to sit idle, I could see gnome-power-manager eventually dim the display
  2) My machine does not rely on the GPU for backlight control.

I hope this helps. If there's anything else necessary for debugging, just ask.

- Ben