Audio / TV problem

[Bill Davidsen]

max bianco wrote:
> 
> 
> On Thu, Mar 6, 2008 at 11:47 AM, Bill Davidsen <davidsen at tmr.com 
> <mailto:davidsen at tmr.com>> wrote:
> 
>     I have some ATI "HDTV Wonder" cards which I would like to use for video
>     capture. The problem is that on all of the systems in which I would like
>     to use the card, it somehow interferes with the audio, such that I lose
>     the audio capability, and alsamixer only shows the cx88 capture function
>     of the card.
> 
>     I could live with that if the capture were good, but it seems garbled,
>     and recording a short section of the content captured gives very low
>     quality audio results. I've done capture with xawtv and ffmpeg, and I
>     can just play the captured audio over the network to another machine
>     with sound, no configuration changes needed.
> 
>     I can put the card in other machines and it works perfectly, with the
>     limitation that the machines in which it works are servers, not
>     something I can use for casual things.
> 
>     If anyone has a thought on making this work, I'll give it a look. Since
>     it happens on three machines, I didn't post a lot of dmesg stuff,
>     without the TV card the usual sound hardware shows up, with the card
>     dmesg shows no indication that normal audio even exists.
> 
>     All machines, working and not, use the built-in audio on the
>     motherboard.
> 
> 
> 
>  Do the machines on which it doesn't work have a chipset in common?

Not a bit, mix of Celeron, K7, and early pre-HT P4, various on board 
audio chipsets. And all work with other video boards, it's just the HD 
board which is a problem. I have three NTSC cards which work just fine.

> What about the machines on which it does work?different chipset?same 
> chipset?

One P4 with HT, one E6600 Core Duo.

> It works only on servers? maybe a service that needs to be up and 
> running is not or some other service is possibly interfering? Compare 
> running services on the servers and workstations?Just some  ideas off 
> the top of my head.
> 
Off hand I'd say thanks for the questions, but the answers aren't all 
that revealing.

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot