Re: nforce2 random lockups - still no solution ?

[James Courtier-Dutton]

Samuel Kvasnica wrote:
> Dear Gabor,
>
> thantks a lot, indeed you are right ! I've been confused by some nforce 
> FAQs where 'nolapic' option was recommended. In fact I did never check 
> whether this option
> really exists. Now, after recompiling the kernel the framegrabber works 
> with uncompressed stream for almost 24h and it is rock-solid.
>
> So, a workaround recommendation for all using ivtv driver on nforce2 
> chipsets and kernels up to 2.4.22:
>
> *** RECOMPILE YOUR KERNEL WITH LOCAL APIC DISABLED ***,
>
> otherwise you'll experience very rare random lockups while watching the 
> compressed stream and lockups within 10 minutes when watching the 
> uncompressed
> yuv stream.
>
> What I'd like to know is whether this bug is AMD processor or chipset 
> related. Is there a patch available ? I tried 2.6.0-test8 and it wasn't 
> stable. I'd prefer to use APIC instead of XT-PIC because some drivers 
> e.g. kernel DRM don't support shared interrupts and I can't get own 
> interrupt for the video card.
>
> Sam
>
>
> Vitez Gabor wrote:
>
> > Hi,
> >
> > On Wed, Oct 22, 2003 at 03:22:04PM +0200, Samuel Kvasnica wrote:
> >  
> >
> > > I'm booting the kernel with acpi=off, noapic and nolapic options and   
> >
> >
> > nolapic? That's not a valid kernel command line parameter I'm afraid.
> > fgrep -ri nolapic $KERNEL_SOURCE_DIR
> >
> > gives nothing. ???
> >
> >
> >     Gabor
> >  

Extract fron linux-2.6test8 Documentation/kernel-parameters.txt
nolapic   [IA-32,APIC] Do not enable or use the local APIC.

So, It is supported in the kernel 2.6.x

Cheers
James

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