I don't know if this is relevant but my /var/log/messages file contains the following references to pulse
Dec 11 13:42:59 glitterbox pulseaudio[7560]: ltdl-bind-now.c: Failed to find original dlopen loader. Dec 11 13:42:59 glitterbox pulseaudio[7567]: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted Dec 11 13:42:59 glitterbox pulseaudio[7567]: main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted Dec 11 13:42:59 glitterbox pulseaudio[7567]: alsa-util.c: Device hw:1 doesn't support 2 channels, changed to 1.
I don't know if this is relevant but my /var/log/messages file contains the following references to pulse
Dec 11 13:42:59 glitterbox pulseaudio[7560]: ltdl-bind-now.c: Failed to find original dlopen loader. RLIMIT_ NICE, (31, 31)) failed: Operation not permitted RLIMIT_ RTPRIO, (9, 9)) failed: Operation not permitted
Dec 11 13:42:59 glitterbox pulseaudio[7567]: main.c: setrlimit(
Dec 11 13:42:59 glitterbox pulseaudio[7567]: main.c: setrlimit(
Dec 11 13:42:59 glitterbox pulseaudio[7567]: alsa-util.c: Device hw:1 doesn't support 2 channels, changed to 1.