After logging into Jaunty (9.04) everything seems to be going fine but after less than 10 minutes the screen goes blank and I'm unable to do anything. The system dual boots with Windows 7 and Windows 7 appears to have no problems.
The system was working fine for months and after being turned off over the weekend failed to start.
I have tried;
- Pressing ALT+CTRL+F1 after the blank screen doesn't work.
- Booting into the LiveCD - same problems
- Selecting different versions of the kernel in Grub
- Killing X when Ubuntu starts (so I'm only on the command prompt)
Everything so far has the same problems except windows 7. If it were not for windows 7 I would have thought a hardware problem.
UPDATE The keyboard lights remain lit up as they were but pushing captslock/numlock etc. doen't do anything. The monitor LED flashes as if its getting no signal (the same flash as when the computer is off) - fans etc. are still running
I'm not sure what logs to look in exactly. If somebody can point me to the right log I'll take a look/show them. I looked in /var/log/Xorg.... but didn't see anything there. But then I'm not sure what to look for.
UPDATE 2 memtest86 fails at about 33% completion - the screen goes blank just like when in ubuntu. I guess this suggests faulty RAM.
UPDATE 3 As it turned out its a overheating/faulty graphics card. Dell are taking away the machine to replace it.