Le 08/05/2018 à 19:50, Christophe Lohr a écrit : > Hi, Hi Christophe, > If I understand well, the pulseaudio client library doesn't find how to > reach the pulseaudio server, isn't it? > How to fix this? As I understand is: if you've no user session launched with X11 PulseAudio can't start because D-BUS services require to be authenticated. One of the way to authenticate with D-BUS is to use the X11 cookie. > Shall I start a pulseaudio server dedicated to the foobar user (the one > who start my foobar daemon)? > Or a "system" pulseaudio server? Indeed, you should run PulseAudio system-wide. Best regards, Alex.