[mythtv-users] Double-audio. And yes, line in is muted and set to record.

[Jarod C. Wilson]

On Tuesday, Sep 23, 2003, at 08:54 US/Pacific, Harondel J. Sibble wrote:

> On 23 Sep 2003 at 0:24, Jarod C. Wilson wrote:
>
>> Double audio, one version in time w/video, one a bit ahead. Fire up a
>> terminal, start alsamixer, verified that line in is muted. Not good.
>> Stop Live TV, audio continues. The line in is still on mute. Toggling
>> it does nothing. Very annoying.
>
> Jarod, what WM are you using?

KDE, RHL9.

> If KDE, can you post a pic of Kmix?

http://wilsonet.com/mythtv/kmix.png

> I've had
> the same issues with my SBLive cards for years, basically I've found 
> the
> following helps.  My setup is slightly different in that I have a 
> Creative
> Desktop Theatre speaker system which has a dolby digital amp built in.
>
> I run the channel 1/2 and 3/4 from the soundcard to the amp while my 
> coax to
> the amp come from my dxr3.

So you don't actually have the sound card hooked to the amp via digi 
coax? Everything works fine in another machine of mine where I was 
using analog out. (a few minutes pass)

Okay, I just tried hooking to the analog out on the card, and it 
exhibits the same problems. Dammit.

> Line from the  TV Wonder goes to Line-in on the
> soundcard. This allows me to use both btaudio for mythtv and line-in 
> for
> xawtv so I don't have to bother with sox to get the audio output from 
> the tv
> wonder when not using myth.

I'd love to just use btaudio, but it don't work. Can't ever get the 
bttv drivers to detect an msp34xx chip.

> Kmix has the following mixers on my machine
>
> volume
> pcm
> speaker
> line
> mic
> cd
> lgain
> ogain
> line1
> digital1
> phonein
> phoneout
> video

I have these in kmix (many more in alsamixer...):

volume
bass
treble
pcm
speaker
line
mic
cd
igain
line1
PhoneIn
Video

> My machine has an ATI TV Wonder and a PVR 250. After each reboot I get 
> TV
> audio out of the rear speakers, to get rid of this, the easiest thing 
> to do
> is fire xawtv (on the tv wonder) then shut it down and it goes away. 
> The
> other way is to click the playback button on either the lgain or ogain
> sliders.   However clicking ogain will result in no rear channel audio 
> for
> anything else, especially digital cd audio (2 conductor cable from 
> cdrom).

Entering and exiting xawtv clears the continuous playing audio problem. 
Clicking lGain does weird things that produce echoes... I have no oGain.

As an aside, I have to repeat how crappy the AVerTV-captured video 
looks compared with the PVR-250 video.

> To get standard tv audio (xawtv) on both front and rear speakers I 
> have to
> have playback button checked on line, lgain and ogain.

I need the playback button on lGain checked also.

> I was playing around with the mixers a couple days ago and there are 
> other
> weird interactions with pcm and cdaudio that I haven't quite sorted 
> out yet.

Yeah, I'm still tinkering a bit.

> Note in all cases the record button is set on the line slider.

Likewise.

>> mute settings are for line in. Can anyone confirm that, and/or give me
>> insight into a way around it?
>
> Not sure if my sblive5.1 will respond the same as your audigy, but at 
> least
> this gives you some suggestions for experimentation.

Thanks for the suggestions. Nothing seems to have helped just yet, but 
I understand things a wee bit better...

>> In the mean time, I think I'll just simply re-enable the motherboard's
>> onboard audio, and use the onboard line in port. Dual sound cards...
>> There's something I have yet to try... Oh joy...
>
> Been there, done, that, switched to btaudio!

I would definitely prefer to do that, but like I said, no msp34xx 
detected, so no btaudio. I posted a question about it to both the 
mythtv and video4linux lists, never got a reply. I'll probably give it 
another go, but thus far, I've been SOL on the btaudio front, so dual 
sound cards seems inevitable...

--Jarod

-- 
Jarod C. Wilson, RHCE

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MythTV, Red Hat Linux 9 & ATrpms documentation:
http://pvrhw.goldfish.org/tiki-page.php?pageName=rh9pvr250