[KLUG Members] ESD mixer controll

[Adam Williams6]

I use esd to funnell audio to LTSP diskless workstations.  This works 
pretty well,  The initscript run via NFS creates the device files on the 
workstations RAM disk and fires up an esd process listening on a TCP port.

In the past I have also fired up an xmixer process via the local init 
process.  This way there is always a mixer running and if it gets killed 
off and new one starts.  It works, but is less than elegant.

So when I upgraded from LTSP 2 to LTSP 3 someone told me that EDS actually 
supports remote mixer support if one sets ESDDSP_MIXER=1.  

So I nuke my local mixer hack.

I set export ESDDSP_MIXER=1 before esd starts on the client.

I set ESDDSP_MIXER=1 in the GNOME session startup script and I can see it 
in my environment when I log in as well as ESPEAKER and the LD_PRELOAD of 
libesddsp and libesd

Audio works (as it did before).

I can now start a mixer,  before it would fail with a "no such device" 
message.  Obviously.

But I can't actually adjust the levels.  

In gmix I can drag the levels up and down without affecting the audio.  In 
xmixer any attempt to adjust a channel simply sets the channel level to 
zero without effecting the actual audio.

Anyone out there have this working with ESD?  It seems so close,  but as 
yet Casto hasn't sent any cigars.

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Ximian GNOME, Evolution, LTSP, and RedHat Linux + LVM & XFS
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