Ubuntu :: Computer Freezes After Several Hours?

May 29, 2011

I've a new Dell Precision T1500, Core i5, 8gb RAM, nvidia graphics card, that seems to freeze after some hours. I'm not sure how long exactly, more than two hours at least.

OS: Ubuntu 11.04
Cause: leave computer turned on, unattended for some time >2hrs.
Symptom: Screens are blank, no response to keyboard or mouse input, reboot is only way to rectify.

Things I've tried:Turn off screen saver

Disable "Sync to VBlank"
Disable screen power management, screen stays "on" always

So far none of these have corrected the issue. The screens are still on, but there is nothing displayed. Same thing did happen with Ubuntu 10.10, I'd hoped maybe 11.04 would fix it, alas, no.

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Code:
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[Code].....

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