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Bug#870874: support sound on ltsp clients with pulseaudio



On Sat, Aug 05, 2017 at 09:35:16PM +0000, Holger Levsen wrote:
> package: debian-edu-config
> version: 1.930
> severity: wishlist
> 
> < pere> a quick look in debian-edu-config make me believe ESPEAKER is the secret word to 
>         look for, and /usr/sbin/debian-edu-ltsp-audiodivert and 
>         /etc/desktop-profiles/debian-edu-config.listing are the places to update.  
>         PULSE_SERVER seem to be the equivalent pulseaudio environment variable, but a 
>         ~/.pulse_cookie file might be related too.  given that the latter is already 
>         mentioned in /usr/sbin/debian-edu-ltsp-audiodivert, I would guess ltsp already 
>         have pulseaudio support...
 
I guess this bug has been filed after the removal of the dependency on
pulseaudio-esound-compat.

LTSP supports pulseaudio since years (for both thin clients and diskless 
workstations). 

LTSP_ALSA_DEFAULT is set to 'pulse' and PULSE_SERVER 
to something like 'tcp:<client-ip>:<port>'

It's rather about the compatibility of programs using esound or even 
older ones using /dev/dsp (audio OSS).

IMO the remaining cleanup things still to do are:

(1) drop /usr/share/debian-edu-config/tools/debian-edu-ltsp-audiodivert 
    because gtick (metronome) is the only program listed but doesn't 
    need to be diverted as /dev/dsp isn't used anymore.

(2) remove the line containing ESPEAKER in 
    /etc/desktop-profiles/debian-edu-config.listing

Wolfgang

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