Re: nforce2 random lockups - still no solution ?

Samuel Kvasnica
2003-10-23T10:17:44Z

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
>
>