[mythtv-users] Occasional hard freezes
Julian Edwards
myth at julian-edwards.com
Fri Oct 28 11:15:22 EDT 2005
Ryan Steffes wrote:
> I thought I had finally gotten this fixed with the kernel option
> nolapic, but it happened to me again. I am experiencing hard lock ups
> that seem to be related to high data throughput, but aren't consistent
> enough for me to track down. When it freezes, only hitting the reset
> or power button fixes it.
>
> I have an MSI K7N2 Delta 2 motherboard with an AMD Barton 2500+ in
> it. It has a nforce northbridge. I am passing the kernel "acpi=no
> noapic nolapic". I'm running 2.6.11-6mdk. I have one PVR 150. I have
> two hard drives, running LVM to make one video share. I'm running
> ivtv 0.3.9
>
> What happens is a hard lock up. It generally happens when I'm
> exercising the ethernet hard.
This exact same thing was happening to me too with my KT6 Delta.
[snip]
> Can anyone give any advice on where to go from here?
Sure. The problem is almost certainly to do with interrupt sharing. In
my case it was a problem with the ACPI steering assigning too many
devices the same IRQ. I ended up fixing it by disabling unnecessary
onboard hardware (eg I don't need 8 USB controllers or onboard sound),
using acpi=off (is that different to your acpi=no ?) and re-positioning
the cards in the PCI slots. I would check your motherboard's manual
since some slots will share an interrupt whatever you do. You can also
assign specific slots a specific IRQ in the BIOS.
I've also heard that using SBLive cards can cause these sorts of issues
- and that's exactly what I am using. If I remove it and turn on ACPI
again it all works with no problems, but I need its SPDIF out. Ho hum.
Good luck.
J
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