RE: Possible CPU_IDLE bug [WAS: Re: Timer unstability on when usingC2 and deeper sleep states (Dell Latitude XT)]

From: Thomas Gleixner
Date: Thu Aug 14 2008 - 05:01:21 EST


On Thu, 14 Aug 2008, Milan Plzik wrote:
> I tried it just now, is performs a bit better than 2.6.26 (e.g. I
> don't get that "press any key unless nothing happens" states), even
> reports a bit more reasonable values of wakeups, but the system
> sometimes becomes rather slow (e.g. when playing video). I was not able
> to compile fglrx driver, so I had to change it to radeon one. And also,
> the number of wakeups reported is not very convincing, though, it
> changes from 300 to 600 (which is ~ two times the sum of wakeups)
> without any reason, and sometimes goes even higher.
>
> I tried to use nolapic_timer option, but it didn't help.

Can you please try "hpet=disable" on the kernel command line ?

Thanks,
tglx
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