[mythtv-users] recordings cut off early especially when, watching recoding in progress

[McNally]

Nick, thanks for the message. I will update ivtv to 0.7.1 as you suggest since it does fix a DMA error.
I should have some opportunity to test it this weekend.  Meanwhile I did make this change:

MythTV Front end setup

 utilities/setup --- setup --- TV settings -- preferred mpeg2 Decoder

changed it to  libmpeg2 (might be faster on some AMD processors)

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Date: Fri, 13 Oct 2006 11:57:22 +0100
From: Nick <knowledgejunkie at gmail.com <http://us.f303.mail.yahoo.com/ym/Compose?To=knowledgejunkie@gmail.com&YY=35524&y5beta=yes&y5beta=yes&order=down&sort=date&pos=0&view=a&head=b>>
Subject: Re: [mythtv-users] recordings cut off early especially when
	watching recoding in progress
To: "Discussion about mythtv" <mythtv-users at mythtv.org <http://us.f303.mail.yahoo.com/ym/Compose?To=mythtv-users@mythtv.org&YY=35524&y5beta=yes&y5beta=yes&order=down&sort=date&pos=0&view=a&head=b>>
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On 12/10/06, McNally <mcnallychris at pobox.com <http://us.f303.mail.yahoo.com/ym/Compose?To=mcnallychris@pobox.com&YY=35524&y5beta=yes&y5beta=yes&order=down&sort=date&pos=0&view=a&head=b>> wrote:
> Hi,
>
> I'm using mythtv 0.20.  When I watch recording in progress, such as a
> baseball game, I begin watching about 40 minutes after the start, 
fast
> forward through commercials and other junk,  and find that the actual
> recording seems to have stopped soon after i started watching. This 
has
> happened twice already to me. I see from the logs that there seems to 
be
> a DMA error and it may be IVTV related. Other recordings have ended 
much
> sooner than scheduled and there is an error in the Myth log.
>
> I am using an ASUS A8N-VM CSM mainboard with an AMD Sempron  which 
has
> NVIDIA nforce and gforce chipsets. The backend and frontend are the 
same
> box. I am using ext3. The CPU from top is around 90% when watching
> recordings. I have sections of the logs below.  Thanks in advance.
>
> ivtv version
> ivtv:  version 0.7.0 (tagged release) loading
> ivtv:  Linux version: 2.6.17-1.2142_FC4 mod_unload 686 REGPARM 
4KSTACKS
> gcc-4.0

Try upgrading to ivtv 0.7.1 which has a fix for DMA problems like this
- from the ivtv changelog:

IVTV changes:

0.7.1 stable release
	- Add getopt support to test/vbi. Add new timeout option.
	- Fix South African broadcast frequency table.
	- Detect and workaround DMA offsets that can be introduced by
	  a DMA error.
	- Sliced VBI always uses PIO, never DMA.


Nick

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