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

[Maarten Bosmans]

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