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.<div>
<br></div><div>The symptom: regular hiccup in the sound output.</div><div><br></div><div>What I've found:</div><div>launching the pulseaudio daemon with -v showed that it is constantly changing the port of the sync:</div>
<div><br></div><div><div>I: [pulseaudio] sink.c: Changed port of sink 1 "alsa_output.pci-0000_00_1b.0.analog-stereo" to analog-output</div><div>I: [pulseaudio] module-device-restore.c: Restoring volume for sink alsa_output.pci-0000_00_1b.0.analog-stereo.</div>
<div>I: [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_1b.0.analog-stereo.</div><div>I: [alsa-sink] alsa-sink.c: Successfully enabled synchronous volume.</div><div>I: [alsa-sink] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 dB.</div>
<div>I: [alsa-sink] alsa-sink.c: Fixing base volume to 0.00 dB</div><div>I: [alsa-sink] alsa-sink.c: Using hardware volume control. Hardware dB scale supported.</div><div>I: [alsa-sink] alsa-sink.c: Using hardware mute control.</div>
<div>I: [pulseaudio] sink.c: Changed port of sink 1 "alsa_output.pci-0000_00_1b.0.analog-stereo" to analog-output-headphones</div><div>I: [pulseaudio] module-device-restore.c: Restoring volume for sink alsa_output.pci-0000_00_1b.0.analog-stereo.</div>
<div>I: [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_1b.0.analog-stereo.</div><div>I: [alsa-sink] alsa-sink.c: Successfully enabled synchronous volume.</div><div>I: [alsa-sink] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 dB.</div>
<div>I: [alsa-sink] alsa-sink.c: Fixing base volume to 0.00 dB</div><div>I: [alsa-sink] alsa-sink.c: Using hardware volume control. Hardware dB scale supported.</div><div>I: [alsa-sink] alsa-sink.c: Using hardware mute control.</div>
</div><div><br></div><div>I noticed this also reflected in the "sound settings", and the port changes coincide with the hiccups.</div><div><br></div><div>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.</div>
<div><br></div><div>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.</div><div><br></div>
<div>cheers,</div>