Comment 5 for bug 162336

[Hardy 8.04 alpha-2 pulseaudio] I looked at /var/log/syslog. Pulse audio wrote some error messages, which may be related to the system sound problem. I don't know enough about Pulse Audio to interpret these messages, but it seems that pulseaudio is not configured properly:
Dec 28 03:04:12 Northgate-U804a2 pulseaudio[5304]: main.c: Called SUID root and real-time/high-priority scheduling was requested in the configuration. However, we lack the necessary priviliges:
Dec 28 03:04:12 Northgate-U804a2 pulseaudio[5304]: main.c: We are not in group 'pulse-rt' and PolicyKit refuse to grant us priviliges. Dropping SUID again.
Dec 28 03:04:12 Northgate-U804a2 pulseaudio[5304]: main.c: For enabling real-time scheduling please acquire the appropriate PolicyKit priviliges, or become a member of 'pulse-rt', or increase the RLIMIT_NICE/RLIMIT_RTPRIO resource limits for this user.
Dec 28 03:04:12 Northgate-U804a2 pulseaudio[5304]: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted
Dec 28 03:04:12 Northgate-U804a2 pulseaudio[5304]: main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted