[pulseaudio-discuss] daemon ping-pongs the sink port

[Tony Bernardin]

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.

cheers,
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