My sounds suddenly stopped playing on Ubuntu 13.04 64bit. I can only see Dummy output device in the Sound Settings and no sound is played during testing.

I can get the sound temporarily working by killing one of the strange processes, but I have to repeat the same after reboot

jan@jan-HP-Desktop:~$ ps -ef|grep pulseaudio

112       1405     1  0 09:38 ?        00:00:00 /usr/bin/pulseaudio --start --log-target=syslog

112       2132  1405  0 09:38 ?        00:00:00 /usr/lib/pulseaudio/pulse/gconf-helper

jan       2575     1  0 09:39 ?        00:00:00 /usr/bin/pulseaudio --start --log-target=syslog

jan       2597  2575  0 09:39 ?        00:00:00 /usr/lib/pulseaudio/pulse/gconf-helper

jan       3160  2975  0 09:40 pts/2    00:00:00 grep --color=auto pulseaudio



jan@jan-HP-Desktop:~$ sudo kill 1405

Is there a permanent solution for this problem?