[mythtv-users] HD-3000 recording corruption

[Warren]

Craig Partin wrote:
> On 3/29/06, Mudit Wahal <mwahal at gmail.com> wrote:
>   
>> On 3/29/06, Craig Partin <cpartin at gmail.com> wrote:
>>     
>>>>> On 3/29/06, Craig Partin <cpartin at gmail.com> wrote:
>>>>>           
>>>>>> This is the first time I have been stumped in over two years of mythtv
>>>>>> use.  I got my HD-3000 working just fine tuning QAM stations over
>>>>>> cable in myth.  The system works flawlessly and reliably except that
>>>>>> QAM recordings get trashed when anything else is happening on the
>>>>>> system.  It records beautifully when nothing else is happening.  This
>>>>>> happens on all channels, HD and SD.  I can playback 1080i content with
>>>>>> XVMC just fine, even with bob.
>>>>>>
>>>>>> Hardware
>>>>>> MSI K7N Delta-2 lsr
>>>>>> Avermedia m179
>>>>>> MX4000 8X AGP
>>>>>> 512MB memory
>>>>>> Sempron 2200
>>>>>> 250GB sata HD
>>>>>> using onboard sata - also had IDE drive previously.  no change
>>>>>>
>>>>>> I have searched here and pchdtv.com and am afraid the answer is going
>>>>>> to be a new mobo.  I have tried swapping power supplies.  The card has
>>>>>> its own irq.  I have switched PCI slots, it is currently in the orange
>>>>>> slot.  I have upgraded to udev and kernel 2.6.15-gentoo-sources-r1.
>>>>>>             
>>>> On 3/29/06, Mudit Wahal <mwahal at gmail.com> wrote:
>>>>         
>>>>> Do you see any messages in the logfile such as IOBuffer etc ?
>>>>>
>>>>>           
>>> On 3/29/06, Mudit Wahal <mwahal at gmail.com> wrote:
>>>       
>>>> Sorry I meat IOBound messages in the logfile.
>>>>
>>>>         
>>> No IOBound errors in the backend log.  The frontend just has the ac
>>> tex damaged, invalid mb errors
>>>       
>> Are you running 0.18 or 0.19 ? Also I read somewhere that the SATA
>> drivers for the older chipset had some issues which was causing file
>> corruption.
>>
>> You can use azap to tune to a channel and dump the HD output from the
>> card to a file directly with and without load. This will eliminate
>> myth from the middle. You can do vmstat or top and check the iowait%
>> etc.
>>
>> I am running 0.18.1 and had IOBound issues while recording and doing
>> something else (commercial detection/file deletion/etc). But the
>> IOBound messages were getting logged in the logfile. Had to change
>> some buffersize etc to get around the messages.
>>     
>
> I am running 0.19-fixes, whatever version is in the Gentoo portage
> tree as of the past weekend.  The issue existed under 0.18.1 also.  It
> happens with or without myth.  The problem is not really myth related
> but this is the most knowledgable group around for these issues. 
> There are several similar threads at the pchdtv forums but no answers
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>   
I do know that is the board has a Silicon Imaging (Images?) controller
on it there are known problems with dumping an HDTV stream to the drives
while anything else is happening.  I have that problem with my pchdtv
3000 card.

W
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