Comment 17 for bug 669535

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bnomis (bmlaunchpad) wrote :

I had a similar effect on an AMILO Pi 2550 (Intel T8100 Core 2 Duo processor). The problem was not related to X, but seems to be caused by problems associated with deeper sleep states of the processors (BIOS bug?). Adding "processor.max_cstate=1" to the kernel boot parameters solved the issue.