[AG-TECH] rat and system mixer fighting each other

Christoph Willing c.willing at uq.edu.au
Mon Aug 18 15:11:39 CDT 2008

On 19/08/2008, at 12:58 AM, James Miller wrote:

> I am running the audio service on an Ubuntu hardy system that uses  
> an AD1985 chipset.  It does work, but I am getting a loopback of  
> captured audio through the speakers.  The alsa mixer does have a  
> switch that fixes the issue.  If I mute the Line-In on the Playback  
> section, everything works properly.  However, if I slide the RAT  
> 'talk' slider it unmutes this Line-In playback. It is a strange  
> issue.  I am hoping someone has some ideas.  I have fought this  
> problem with several dists of linux.


After muting Line-In using alsamixer, try setting the "Force AC97"  
switch to "True" in the AudioService configuration dialog. Don't  
forget to store the setting.


Christoph Willing                        +617 3365 8350
QCIF Access Grid Manager
University of Queensland

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