Comment 7 for bug 131628

Same issue here since Karmic on a Dell Latitude E6400. During a restore from hibernation the screen is lit and the splash screen is visible. As soon as the restore has completed the screen appears to enter a power saving state and switches off.

Moving the mouse or pressing the power button will cause the screen to switch on and the screensaver lock screen to appear after which I can login and continue as normal.

What info can I supply to help diagnose this issue? I'm currently using an up to date Ubuntu Lucid.