2011/12/2 Tony Bernardin <sarusama at gmail.com>: > Sorry if I'm posting this question in the wrong list. I've been trying to > search for this issue, but have been unsuccessful so far with not even a > hint at what I could try to get to the bottom of this. I'm not very familiar > with the sound system. > > The symptom: regular hiccup in the sound output. > > What I've found: > launching the pulseaudio daemon with -v showed that it is constantly > changing the port of the sync: > > I: [pulseaudio] sink.c: Changed port of sink 1 > "alsa_output.pci-0000_00_1b.0.analog-stereo" to analog-output > I: [pulseaudio] module-device-restore.c: Restoring volume for sink > alsa_output.pci-0000_00_1b.0.analog-stereo. > I: [pulseaudio] module-device-restore.c: Restoring mute state for sink > alsa_output.pci-0000_00_1b.0.analog-stereo. > I: [alsa-sink] alsa-sink.c: Successfully enabled synchronous volume. > I: [alsa-sink] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 > dB. > I: [alsa-sink] alsa-sink.c: Fixing base volume to 0.00 dB > I: [alsa-sink] alsa-sink.c: Using hardware volume control. Hardware dB scale > supported. > I: [alsa-sink] alsa-sink.c: Using hardware mute control. > I: [pulseaudio] sink.c: Changed port of sink 1 > "alsa_output.pci-0000_00_1b.0.analog-stereo" to analog-output-headphones > I: [pulseaudio] module-device-restore.c: Restoring volume for sink > alsa_output.pci-0000_00_1b.0.analog-stereo. > I: [pulseaudio] module-device-restore.c: Restoring mute state for sink > alsa_output.pci-0000_00_1b.0.analog-stereo. > I: [alsa-sink] alsa-sink.c: Successfully enabled synchronous volume. > I: [alsa-sink] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 > dB. > I: [alsa-sink] alsa-sink.c: Fixing base volume to 0.00 dB > I: [alsa-sink] alsa-sink.c: Using hardware volume control. Hardware dB scale > supported. > I: [alsa-sink] alsa-sink.c: Using hardware mute control. > > I noticed this also reflected in the "sound settings", and the port changes > coincide with the hiccups. > > This is on up-to-date Ubuntu 11.10, where I believe the pulseaudio version > 1.0. The underlying hardware is Intel HD audio that is integrated on the Z68 > motherboard. > > I'd greatly appreciate any suggestions as how I could get to the bottom of > this issue? Maybe it's not pulseaudio's fault, but I don't know what > configures these ports. Interesting. Can you provide the full output of pulseaudio -vvvv when this happens a couple of times? Maarten
