[mythtv-users] AC97 in only one speaker

Thomas Baker thomas.baker at villanova.edu
Mon Feb 6 17:40:44 UTC 2006


I'm happy to report that using "amixer cset iface=MIXER,name='Capture 
Source' 4,4" worked perfectly and I now have captured sound in both 
channels.  Thanks for the help.

-Tom
Thomas Baker wrote:

>Thanks for taking the time to respond to this.  I just read your message
>and have not had a chance to try any of this, but you'll be happy to
>know, you literally just saved me from giving up on the whole MythTV
>thing completely.  I'll post back my results as I know there are others
>who are experiencing this same issue.
>
>-Tom
>
>----- Original Message -----
>From: Tom Burt <benefici at fastmail.fm>
>Date: Sunday, February 5, 2006 8:38 am
>Subject: Re: [mythtv-users] AC97 in only one speaker
>
>  
>
>>I have found the solution to this problem. Apparently, this is a 
>>bug in ALSA 
>>and is corrected in alsa-lib 1.0.11rc2. I have alsa 1.0.9 (shipped 
>>with Suse 
>>10), but could also fix the problem manually with
>>amixer cset iface=MIXER,name='Capture Source' 4,4
>>as described on the page
>>https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1658
>>See also
>>http://forums.gentoo.org/viewtopic-t-419490-highlight-
>>tvtime.html?sid=3Df82=272705902547b836ee23b66418268which contains 
>>the reference to the bug above.
>>Tom
>>
>>    
>>
>>>Currently my audio is only working out of one speaker.  I've been
>>>playing around in alsamixer for hours and hours on end and still no
>>>result.  Here's the situation: capture card is Hauppauge WinTV 401,
>>>sound card is a a Creative Labs SB Live!, running Fedora Core 4 
>>>      
>>>
>>x86_64> with KDE.  The "Line" is set to mute and is the capture 
>>device (when
>>    
>>
>>>unmuted, sound is in both speakers), "Capture" is also set to 
>>>      
>>>
>>capture> (no sound without it, but must stay at 0% or it's really 
>>bad quality)
>>    
>>
>>>"Wave" is turned up, "AC97" is set to 0% and "AC97 Capture" is 
>>>      
>>>
>>turned> up.  In MythTV, the audio device is set to /dev/dsp.  One 
>>experiment I
>>    
>>
>>>tried was using the Mic-in on my card.  I was able to get both 
>>>      
>>>
>>speakers> to work, but the sound quality was just terrible, both 
>>the captured and
>>    
>>
>>>recorded.  I also tried using my onboard sound, but there was no
>>>difference from the SB Live!  Please Help!
>>>
>>>-Tom
>>>      
>>>
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>>
>>    
>>
>
>
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