dell xps1330, nvidia gpu. before 11.04 installation, suspension and hibernation worked fine (since the 8.10 era...). For the 11.04 release, I decided for a full installation instead of the release upgrade. Now after suspension i can't resume: the display power-up and then power-down almost immediately, then numlock and capslock leds start blinking - after that i force shutdown. Hibernation still works fine.
Where do i start looking to get what failed during suspension/resuming?