Lennart Poettering schrieb: > Uh. Could you please redo this with debug symbols installed? > yes i can :-) ok i repeated this steps. This time my music player and the audio server crashed instantly. i am not sure whether i did all correct. In the ubuntu Howto is something written of, ...If the program hangs but doesn't crash you can press ctrl+c in gdb while the program is frozen and then continue with the next step. ... I didnt presses ctrl+c, because i think pulsaudio is crashed and doesnt hangs. The link to ubuntu debug howto is, https://wiki.ubuntu.com/Backtrace Here is my debug output: http://rafb.net/p/HF4Amq76.html regards markus