[mythtv-users] New Myth/ivtv error

sherpa 13 sherpa_13 at hotmail.com
Sun Jul 10 06:56:16 EDT 2005


Hi,

Unfortunately I can't provide a solution however I have been having the same 
error for some time now (multiple versions of ivtv anyways), it always 
occurs when whatching Live Tv or a recorded program, thought a little more 
info from my setup might help.

The playback freezes and looking at /var/log/messages has the error you 
describe below.

Jul 10 11:36:12 faith kernel: ivtv: DEC: Decoder wants 0x00010000 bytes, bad 
mem
Jul 10 11:36:43 faith last message repeated 7 times
Jul 10 11:36:46 faith kernel: ivtv: DEC: Sched Buffer end reached 0x036f0fbd
Jul 10 11:36:46 faith kernel: ivtv:  DEC: Mailbox 10: 0x00000000 0x036e0fbd 
0x03
Jul 10 11:36:46 faith kernel: ivtv: DEC: Sched Buffer end reached 0x036f0fbd
Jul 10 11:36:46 faith kernel: ivtv:  DEC: Mailbox 10: 0x00000000 0x036e0fbd 
0x03
Jul 10 11:36:46 faith kernel: ivtv: DEC: Sched Buffer end reached 0x036f0fbd
Jul 10 11:36:46 faith kernel: ivtv:  DEC: Mailbox 10: 0x00000000 0x036e0fbd 
0x03
Jul 10 11:36:46 faith kernel: ivtv: DEC: Sched Buffer end reached 0x036f0fbd
Jul 10 11:36:46 faith kernel: ivtv:  DEC: Mailbox 10: 0x00000000 0x036e0fbd 
0x03
Jul 10 11:36:46 faith kernel: ivtv: DEC: Sched Buffer end reached 0x036f0fbd

Sometimes seems to coincide with the following in my mythfrontend.log
2005-07-09 20:00:43.772 Waited 4 seconds for data to become available, 
waiting again...
2005-07-09 20:00:47.774 Waited 4 seconds for data to become available, 
waiting again...
2005-07-09 20:00:51.775 Waited 4 seconds for data to become available, 
waiting again...

and this in mythbackend.log
2005-07-10 11:36:56.911 IOBOUND - blocking in ThreadedFileWriter::Write()
2005-07-10 11:43:03.390 IOBOUND - blocking in ThreadedFileWriter::Write()
2005-07-10 11:43:12.602 IOBOUND - blocking in ThreadedFileWriter::Write()
2005-07-10 11:43:12.625 IOBOUND - blocking in ThreadedFileWriter::Write()
2005-07-10 11:43:16.308 IOBOUND - blocking in ThreadedFileWriter::Write()

Skipping back will often unfreeze the picture an allow playback to continue, 
although I have noticed the audio getting out of sync after this.

I've spent a long time searching archives and have tried a few things. Any 
suggestions/solutions would be great as this is the only issue I have with 
an otherwise great system.

My config:
P4 3.0 GHz
2GB RAM
PVR350
Fedora Core 3 2.6.11-1.27_FC3smp
mythtv-0.18.1-113
ivtv 0.3.6w
recording on xfs


>Date: Wed, 22 Jun 2005 09:22:49 -0700
>From: Steve Pugh <spugh at edenfx.com>
>Subject: [mythtv-users] New Myth/ivtv error
>To: mythtv-users at mythtv.org
>Message-ID: <42B99059.20702 at edenfx.com>
>Content-Type: text/plain; charset=iso-8859-1; format=flowed
>
>Hello all,
>
>My Myth box, specs below, has been in "safe production" (the old Replay
>TV is not yet unplugged) for about two weeks now.  Over the weekend, it
>became unresponsive to remote and I could not get in via Mythweb.  SSH
>was sluggish but I could get in.  Restarting gave me the 'GDM could not
>write to your authorization file" error, and executing 'df -h' showed
>that my hda / partition was 100% full.
>
>I traced the culprit to /var/log/syslog, which was almost 700MB.
>Roughly 99% of it was the following, repeating and very frequent judging
>from the timestamps:
>
>     mythtv kernel: ivtv: DEC: Decoder wants 0x00010000 bytes, bad memory
>location 0x00010000.
>     mythtv kernel ivtv: DEC: Decoder wants 0x00010000.
>
>The above lines repeat anywhere from eight to twelve times, sometimes
>the shorter line will appear twice, sometimes the longer line within the
>repeating block, then the following might appear, and then they repeat
>some more:
>
>     mythtv kernel ivtv: DEC: Decoder w010000.
>
>I'm going to post this to the ivtv list as well, but y'all are pretty
>smart people and so I thought I'd ask you as well.  Thanks for any
>suggestions/ideas you can offer!
>
>     -Steve
>     Dual 2.4GHz Intel
>     Knoppmyth R5A16, Myth 0.18.1
>     PVR-350, PVR-250, ivtv 0.3.6g
>
>




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