On Jun 21, 2005, at 10:26 PM, D. Hugh Redelmeier wrote:
| From: Michael Carland <[EMAIL PROTECTED]>
| I have an AMD64 machine running Debian sarge with 2.6.11.7, in 32
bit mode.
| It's sole purpose is to run mythbackend (.18). It has a single
PVR-500MCE with
| ivtv 0.3.6e. I have a second PVR-500 I'd like to add, but am trying
to resolve
| this problem first. One possible problem is my MB has a VIA chipset.
It is an
| MSI K8T Neo2-F (I was looking for AMD64 with a good number of PCI).
|
| The problem is it reboots spontaneously. There is nothing in the
logs, I even
| had the kernel use ttyS0 as the console, and had another machine
capture the
| output.
[Note: I'm not an expert, I'm just thinking out loud.]
Sounds like you are doing all you can. The serial console is a good
thing to try.
Yeah, I thought it would work so well, I barely grumbled as I hauled an
old SE/30 out of the closet, doug out all the required serial adapters,
and crossed my fingers the hard drive would still spin. I'm very
disappointed it didn't work, I still have no clues as to what is
fouling up.
The fact that it is AMD64 is probably not a problem because you are
using it in 32-bit mode. Have you tried it in 64-bit mode? I would
not expect it to behave better, but it *might* behave differently. Of
course that experiment requires a new installation and probably isn't
worth the effort.
That's my thinking too. I would guess the 64-bit stuff would be less
stable.
Can you crash the system by playback over NFS while not recording?
Since it "usually" happens once in 30 minutes, it takes a long time to
narrow down. So far, it has only happened when I am recording with ivtv
*and* doing something else at the same time. Those things have been
either playing back video over NFS, or pulling down some Real content
with mplayer. Sad thing is, even recording with two tuners, and playing
back video over NFS, top still reports 97% idle, so it's not like I'm
grinding the thing into the ground.
Can you crash the system by playback from a local file while
recording?
I have thought about trying that, but it involves sitting in the
basement. But now that it's starting to hit 85+ in the house, sitting
in the basement doesn't sound like such a bad idea.
Can you crash the system with other (non-NFS) network load while
recording?
My next step was going to be stopping NFS and letting Myth do its Myth
protocol thing to transfer video. The only reason the machine is
running NFS (so far) is to serve the recorded video.
Thanks for the ideas. Since I get absolutely no logging, it's going to
be hard to narrow down. I did try Keith C's idea of "noapic" and
"nolapic". I was very happy and about to announce success, until after
3 hours of dual tuner recording and single playback it rebooted twice
in a short time span. Much better than the usual once or twice in 30
minutes, but probably coincidence. Before using those options, almost
everything had its own interrupt (the dozen USB flavors where sharing,
but I think they have to, since they are the same hardware, and I don't
use USB on the system anyways), but after turning off apic and lapic,
there seemed to be more interrupt sharing.
I did do some Googling, and found plenty of people happy with this mobo
with various distros. And I've run a memtest for an afternoon, so
that's not a likely culprit. Guess I'll just have to keep trying.
Thanks,
-Michael
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