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Old 08-08-10, 06:15 AM   #6
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Join Date: Sep 2008
Posts: 25
Default Re: 256.44 cpu / X spike

I've also been getting nasty spikes with the latest driver (256.44). Every so often, for 3-5 minutes at a time, all cores will ramp right up to 90-95% CPU.

It's a powerful computer (i7) so I can carry on doing lower-power things but watching fullscreen video, flash-heavy websites or playing games is completely out of the question.

I should add that these spikes are not limited to X. All the CPU monitors show huge load but none show a single process that could account for it. Even with kenel threads showing, I can't make any sense of it.

I'm going to downgrade to 256.35 and see what I can see. I'm on kernel 2.6.35 and in case it's relevant, I've already posted a thread on this on Ubuntu's StackExchange site:
OliW is offline   Reply With Quote