I am Running Ubuntu 10.04 LTE on HP DV2000 Series Laptop. It was working good till last night. But today when I restarted it, I couldn't see a thing. It was all black screen, I can hear the harddisk spinning and it is working. Then after several times I hard rebooted it, finally it showed me the screen but with minimal brightness say like I can figure out what is what If I can stare at the monitor very long period. I have tried to update the linux kernel if that was the problem. But no. Currently i am running the same box by connecting a monitor to it.
What are the causes of this type of problem? And how to solve it?