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Re: [AG-TECH] Problem with mic, rat and gentoo

This is a characteristic of AC97 based cards. Rat handles some of them by hardcoding; others can be handled by setting the OSS_IS_AC97 environment variable.

export OSS_IS_AC97=1 (for sh)
setenv OSS_IS_AC97 1 (for csh)

Hopefully this fixes the problem.

Tom


Ashley Wright wrote:
Hi Jason,

This was the first thing I tried, I prefer the talk to start muted, however the setting made no difference.

This is a strange problem. I have had a look in the AudioService script (inside AudioService.zip) but cant find anything I would think would make a difference.

Ashley

Jason Bell wrote:

Hi Ashley
Have you tried editing the audio service settings through the "manage my
node" configuration tool????

You have the ability to change the input and output levels as well as
turning talk on and off.

These setting may help as well.

Cheers,
Jason.

--------------------------------------------
Jason Bell, B.I.T.
B. Info. Tech. (Honours) Student

Network Engineer
Information Technology Division
Central Queensland University

High Performance Computing Support Officer
Central Queensland University

Research Assistant to the Nonlinear Intelligent Systems Research Group
Faculty of Informatics & Communication
Central Queensland University

E-mail : j.bell@cqu.edu.au
Phone : 07 4930 9229

--------------------------------------------

Patience is a virtue.
But if I wanted Patience,

I would have become a Doctor.
--------------------------------------------


-----Original Message-----
From: Ashley Wright [mailto:a2.wright@qut.edu.au] Sent: Tuesday, 15 March 2005 12:55
To: Jason Bell; 'ag-tech@mcs.anl.gov'
Subject: Re: [AG-TECH] Problem with mic, rat and gentoo

Hi Jason,

This looks good, I have found the file and the setting "*audioInputMute:

1" However if I set this to 0, next time the Venue Client opens the RAT it is set make to 1.

Also interesting, if I open RAT with the command "rat xxx.xxx.xxx.xxx/xxx" the mic setting is left unchanged (this is good), however if it is opened with the Venue Client then I still get the feedback. This is making me think the venue client is doing something I do not want it to do.

Any more ideas?
Ashley

Jason Bell wrote:


Hi Ashley

There is a RatDefaults file in the home directory (Well there is for
fedora anyway), you might want to changes some of the settings in that
file so that when "rat" starts up, none of your settings are changed.

Hope this helps.

Cheers,
Jason.

--------------------------------------------
Jason Bell, B.I.T.
B. Info. Tech. (Honours) Student

Network Engineer
Information Technology Division
Central Queensland University

High Performance Computing Support Officer
Central Queensland University

Research Assistant to the Nonlinear Intelligent Systems Research Group
Faculty of Informatics & Communication
Central Queensland University

E-mail : j.bell@cqu.edu.au
Phone : 07 4930 9229

--------------------------------------------

Patience is a virtue.
But if I wanted Patience,

I would have become a Doctor.
--------------------------------------------


-----Original Message-----
From: owner-ag-tech@mcs.anl.gov [mailto:owner-ag-tech@mcs.anl.gov] On
Behalf Of Ashley Wright
Sent: Tuesday, 15 March 2005 11:59
To: ag-tech@mcs.anl.gov
Subject: Re: [AG-TECH] Problem with mic, rat and gentoo

Hi,

Normally in the mixer (gnome volume control), we have the mic input muted, with the record ticked. This works. Our problem is that when rat


is started it un-mutes the sound, so that the sound plays though the speakers. Ticking the mute box fixes this again.

My problem is that every time rat is opened, or settings are changed, the mic feedbacks though the speakers, and I have to tick the mute box again.

We are running a sound blaster live. We are using OSS because ALSA
gives

a distorted sound.

This does not happen on our Fedora Access Grids, only our gentoo Access


Grid.

Anybody have any other ideas?

Ashley

Gavin W. Burris aka 86 wrote:




Sounds like you have to adjust your mixer to not play capture back
through. If you are not using ALSA, then I would highly recommend it.

My notes, including mixer screen-grabs, here:
http://viz.aset.psu.edu/ga5in/AccessGridNodeOperation.html#audio


Ashley Wright wrote (on Mon, 14 Mar 2005 at 09:09):



Hi,

We have set up a single computer accessgrid using Gentoo Linux. We
have


used the official AG2.3 toolkit.

My problem is that every time a new rat is opened (changing venue
etc)




or a setting is changed, rat unmutes the microphone and the mic plays


directly into the speakers. This causes feedback though the mic and speakers. I then need to remute the mic in the gnome volume control
to




get rid of the feedback.

Does anybody have any ideas of what could be causing this, and a suggested fix.

Thanks,
Ashley

--
Ashley Wright
3864 9264
a2.wright@qut.edu.au
HPC and Research Support Group
Queensland University of Technology (QUT)