LTSP local audio / sound not working on Lubuntu

Aere Greenway Aere at
Thu Sep 20 21:33:32 UTC 2012


I don't know if this has a bearing on the problem you observed, but (at
least in Lubuntu 12.04) I have had to change the
"/etc/modprobe.d/alsa-base.conf" file (in the case where you have two or
more sound cards), so that the one not hooked up to the
speakers/amplifier will not get the first slot.  

It would usually initialize them in the same order, but occasionally,
there would be no sound, and I would notice (looking in the qjackctl
configuration) that the sound cards had opposite slots (were initialized
in a different order).  

In Ubuntu (and Kubuntu) you can indicate which sound card you use, and
it will respect that specification.  That has not been the case with
Lubuntu (11.10, and 12.04, at least).  

- Aere

On Thu, 2012-09-20 at 17:20 -0400, John Hupp wrote:

> I have been testing LTSP on Lubuntu and Edubuntu with simple 2-PC
> setups.
> I found today that local sound does not work right on the Lubuntu LTSP
> client.  On several client sessions, Audacious and Rhythmbox played
> MP3's over the speakers attached to the server.  On another session,
> Rhythmbox produced an error that is was not able to locate or open an
> output device, and Audacious simply did nothing.
> I checked the client BIOS to make sure that sound was enabled.
> On an Edubuntu client, local sound worked fine.
> Is this a familiar problem to anyone?  Solution?


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