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From: Johann Hugo <jhugo@icomtek.csir.co.za>
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Subject: Re: SMP problems with -CURRENT? (and BETA5)
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On Tuesday 21 September 2004 02:26, Adam K Kirchhoff wrote:
> What makes you think it's the cpu throttling that's causing the lockups
> for me?  It does say "acpi_cpu: throttling enabled, 8 steps (100% to
> 12.5%)"  but it continues on the same line with "currently 100%"  Maybe
> I'm reading it wrong but that would indicate to me that it's still
> running at 100%....
>
> In fact, I just checked and BETA4, which works fine, also displays the
> same line about cpu throttling.
>
> Any other ideas?  I'd really like to make sure that this problem doesn't
> continue beyond BETA5 :-)  Anything I can do to make sure this gets
> resolved (before I go and send a problem report)?
>
> Adam

I had a similar problem. If you do a verbose boot you can see that it  
actually continues past  "acpi_cpu: throttling enabled ...." and it stops 
with "ata0: resetting done" . Looks like some problem with the apic. 

I've made a new kernel without "device apic and options SMP " and now it boots 
fine.

Johann