Re: nforce2 random lockups - still no solution ?

["Matt H." <lkml@lpbproductions.com>]

Turn off apic in the bios.. it should then work well .. 


On Tuesday 21 October 2003 11:01 am, Samuel Kvasnica wrote:
> Hello,
>
> Last few weeks I spent quite much time trying to get working two nforce2
> chipset based motherboards with latest linux 2.4.22 - ASUS A7N8 Deluxe
> 2.0 and
> MSI K7N2 Delta. Althought the latest kernel version already detects
> correctly all the nforce2 stuff and APIC seems to run work as well,
> some random lockups still remain. At the very beginning I believed I
> could get rid of lockups by setting lower udma mode on IDE (hdparm -X
> udma3).
> In the fact this only reduced very much the probability of lockups -
> with udma5 I could freeze the system within few minutes e.g. during
> kernel compilation.
> with udma3 system is usually stable for several days, but sometimes it
> locks. When it happens, it happens mostly during first 30 mins after boot.
> I'm booting with noapic, nolapic and acpi=off, but it doesn't seem to
> have really any effect on lockups.
> Unfortunatelly, I can't get any debug info. I've redirected syslog to
> flash-card but didn't get even a bit more of info, it seems to blow-up
> the chipset completelly and immediatelly.
>
> Now, in the system with MSI K7N2 motherboard I have a framegrabber
> (Hauppauge PVR-250) installed, using ivtv driver.
> I'm able to lock-up the system when streaming uncompressed video (e.g.
> cat /dev/yuv0 >/dev/null) and the lockups are also hard, w/o debug info.
> The ivtv driver is using DMA very heavily  but seems to work on other
> chipsets. So these lock-up problems might be rather DMA then APIC related.
> Interesting is that I've never had such a lock-up when running WinXP on
> same computer ( :-) seems impossible), even under load and with the
> framegrabber.
> I've run memtest on both machines for 24 hours, it shouldn't  be bad
> memory. On both machines I'm using just onboard hardware, except for the
> AGP graphic card
> (matrox and nvidia) and the framegrabber. Hard disk is on parallel IDE,
> SATA controller is disabled.
>
> So my conclusion is that the nforce2 lock-ups are still unsolved at the
> moment. Any nforce experts around ?
>
> Please, reply directly using cc:, I'm not on the list.
>
> thanks,
>
> Sam
>
>
>
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