[mythtv-users] spontaneous reboots after upgrade & move to Ubuntu - IVTV/pre-emptive kernel locks?
cmisipster at gmail.com
Sat Nov 10 14:49:44 UTC 2007
On Oct 21, 2007 2:53 PM, Chris Isip <cmisipster at gmail.com> wrote:
> I have found out that certain mixes of kernel and ivtv drivers work well
> together. I have stuck with 2.6.18-1.2239 (fedora core 5) and ivtv
> 0.8.2-123 because of this. No spontaneous reboots ever with this system
> which runs 24/7 for months on end. I practically forget that I am watching
> LiveTV instead of regular tv. It happily supports 1 PVR500 and 2
> PVR250's. Just for fun and also because supposedly it is the stable release
> and sheer curiosity, I compiled a 0.10.5 ivtv kmdl rpm and when I
> installed it, the system rebooted after a few minutes of recording or
> watching live tv, each time. So back to 0.8.2-123. It might not be the
> kernel, so I am glad I found an srpm of ivtv 0.8.2-123 from some old
> atrpms mirror, in case I need to upgrade the kernel.
> From time to time though, I get
> ivtv all encoder mpeg stream buffers are full. Dropping data
> messages in dmesg. Very minor frame dropping which I can put up with.
> On 10/19/07, Jonathan Rogers <jonner at teegra.net> wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
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> > Nedim Cholich wrote:
> > > I can't tell if you're compiling your own kernel. If you are, don't do
> > it.
> > > Open the box, pull out all the cards and memory and put them back,
> > making
> > > sure all the cards are sitting nicely in their slots. Then install 32
> > bit
> > > version of Ubuntu (64 bit is not really worth it, been there done
> > that), and
> > > don't do any customizations until you system stabilizes. Out of the
> > box
> > > Ubuntu 7.04 works with ivtv and mythtv great.
> > OTOH, I've been using MythTV on an all 64-bit systems (both Gentoo and
> > Ubuntu) from day one more than two years ago with no major stability
> > problems except due to unsafe AGP settings (which is now fixed). I have
> > 1 PVR-150 and 2 Air2PC cards and I can record from all three while
> > commflagging and watching. The machine has usually been up for weeks or
> > months at a time, though I'm probably going to configure it to shut down
> > when not in use.
> > The advice about selectively removing hardware is good. Flaky hardware
> > can be almost impossible to diagnose. Also make sure that everything is
> > getting sufficient cooling. Overheating CPUs can cause intermittent
> > errors. I've also been surprised at how hot my tuner cards can get, even
> > though I have two intake and one exhaust fan.
> > Jonathan Rogers
> > -----BEGIN PGP SIGNATURE-----
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> > iD8DBQFHGQCAMs6f82yVS5wRAtW8AJ0Xnc1joYOcbcRTjAAdouyvLtL9IACdE9Gi
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> > =oJDe
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> I found a mythtv optimization site that explained how to increase the ivtv
buffers. With those changes, I eliminated 90 % of the ivtv error messages
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