[mythtv] firewire tester
Andrew Casper
andrew at andrewcasper.com
Thu Sep 14 02:23:29 UTC 2006
On Sep 13, 2006, at 9:49 PM, John P Poet wrote:
> On 9/13/06, Andrew Casper <andrew at andrewcasper.com> wrote:
>>
>>
>> On Sep 13, 2006, at 8:21 PM, Jim Westfall wrote:
>>
>>
>> it should be ok to run while backend is running, so long as its not
>>
>> recording with the node you are testing.
>>
>> Thanks John - that pointed me in the right direction.
>> Unfortunately it
>> didn't fix my issue.
>>
>> Since you seem to be the firewire guru, I have a issue that you
>> might be
>> able to solve...
>>
>> I've got a DCT-6200 and 14 HD channels on my plan. MythTV has no
>> trouble
>> tuning 10 channels. The other 4 are on a special HD package from
>> my provider
>> and are a little problematic. Before .20, if MythTV could lock to the
>> broadcast stream on one of the 4, I would get about a minute of
>> broken up
>> picture before the backend would just stop. At the same time, the
>> backend
>> log would fill with TS packet out of sync errors. Now with .20, I see
>> FireRec, Error: TS packet out of sync but the backend doesn't
>> crash. CPU
>> usage is not an issue
>>
>> I checked the service menus on the DCT-6200 and none of the
>> channels has 5c.
>> MythTV seems to like broadcast mode at 200 Mbs.
>>
>> I tried to recompile the kernel (2.6.17-2174) with your dma.diff
>> firewire
>> fix (hand edited it as the diff doesn't like the current kernel),
>> but the
>> compile kicked and error when it got your last change (too many
>> variables?).
>>
>> So, would the firewire kernel fix help this? Any other words of
>> wisdom?
>>
>> Thanks in advance.
>>
>> - Andrew
>
> I had very similar problems at one time. Turned out to have something
> to do with my on-board 1394a port. Switched to a cheap PCI addon
> firewire card, and the problem went away.
I tried that one - moved from the Asus on-board FireWire to a Koutech
PCI-e card with the TI chipset that everyone says works. Exactly the
same issues with both connections. If it were a card issue, I'd think
it would be a problem with all 14 channels. But that isn't the case.
And sorry, Jim - I mistyped in my last post and didn't thank you
appropriately. Thanks Jim.
- Andrew
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