What should I do when Ubuntu freezes?
In the last week or so Ubuntu has started freezing on boot, showing only a purple screen. It freezes before the screen saying Ubuntu with small dots under it comes up. The keyboard and mouse doesn't seem to respond to anyting and nothing happens if I just wait some time.
It seems to be coming at almost random but usually with a few days in between. I have been running Ubuntu since it was first released and before the freezes started happening I had no problems at all. But now when I hover an application in the launcher bar, the popup with the name on it will sometimes act weird or not show properly. I don't know if that has anything to do with the freezing.
Any help? Thanks.
I'm running Ubuntu 12.04 with Bumblebee and only a few other applications installed. My computer is a Samsung Q330:
Intel® Core™ i3 Processor 330M (2.13 GHz, 3 MB) 4GB (DDR3 / 2GB x 2) nVIDIA GeForce 310M 320 GB (5400 opm S-ATA)