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On 26/01/14 10:47, Philip Hudson wrote: > Thanks for the in-depth solution. > > On 25 January 2014 19:09, bad apple <mr.meowski@xxxxxxxx> wrote: >> fiddle with pulseaudio so we can have it running a single >> system-wide instance (this may well cause other problems though, be >> warned): > > This gives me pause. I need to understand the implications better. > > Say I follow your recipe for pulseaudio deliciousness, enjoy my fill, > and now kill my desktop session and restart mdm, and the next user who > logs in (using the greeter) is not me. Will pulseaudio be hosed for > them? To prevent that, will I now need to add a > re-enabling-default-per-user-pulseaudio incantation to my leaving > ritual? (Is that even what I would be re-enabling?) It shouldn't cause any problems, except in a couple of unlikely corner-case scenarios: if you were to start using the machine as a true multi-seat device (i.e., multiple attached keyboard/mouse/monitors for simultaneous users) then the audio service can possibly fall over as everyone fights for resources. Recognising new sound devices can also be a problem with pulseaudio running as system-wide daemon apparently: unless you're planning on swapping your sound card on a regular basis this shouldn't be a problem either. There are some theoretical security issues as well but I've never read of anything concrete. To reverse out the changes you would only need to replace the edited /etc/pulseaudio/daemon.conf with the original, or comment out or change the following lines back to "no": daemonize = yes system-instance = yes And then restarting the pulseaudio daemon will put you back to normal, so it's not a lot of hassle to revert if you need to after testing. If you really want the grisly details, Poettering himself explains it here: http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/ But as per usual I would feel completely happy totally ignoring him. Regards -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq