[mythtv-users] Lockup with PVR-350

[Darren Hart]

Darren Hart wrote:
> 
>> we are many having problems with the tuner. We are not yet sure where
>> the problem comes from. Check the mythtv user, ivtv-user and
>> ivtv-devel lists archives in the past days. They are already threads
>> on that matter.
>>
>> There are currently 2 main ideas: DMA problems and power supply.
>> I currently disabled DMA on my hard disk, and I have 5 hours uptime,
>> which is one of the best I had in the past week. But I can't see Live
>> TV correctly because of that... :(
>>
> Just to add to the mix, I run the frontend and backend on the same 
> system with a pvr-250 and a pvr-350, using ivtv-fb for X.  All my 
> drives, including root, recordings, and live-tv cache, are all nfs 
> mounted.  With Myth 0.16 and ivtv-0.1.9a I had very few lockups, with 
> Myth 0.17 and ivtv-0.2.0-rc3g I get a lockup at least once a show.  I 
> can ssh in and kill the frontend and restart it.  The UI is responsive 
> but all the text and the selection area are filled with a portion of the 
> last frame played before the crash.  If I try and play a recording, the 
> machine locks hard.
> 
> Checking lspci show that the pvr-250 and the nvidia card (used only for 
> viewing boot messages and the tty) share IRQ 11, and the pvr-350 is on 
> IRQ 9.
> 
> Since I am not sharing IRQ's with the 350 and I don't have any local 
> disks spun up, I thought this might be an interesting data point.  The 
> box is a PII 400 with 320 MB of RAM.
> 
> thoughts? comments?

Just did some testing, when playback locks up, the following starts 
repeating in syslog:

Mar 11 19:06:53 leeloo kernel: ivtv: 1000 ms time out waiting for firmware
Mar 11 19:06:53 leeloo kernel: ivtv: Failed api call 0x00000015 with 
result 0xfffffff0
Mar 11 19:06:53 leeloo kernel: ivtv: DEC: couldnt read clock


> 
> --Darren
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