Bug 99223

Summary:	webcam mic not set to "default alternative"
Product:	PulseAudio	Reporter:	promeneur <epistemepromeneur>
Component:	clients	Assignee:	pulseaudio-bugs
Status:	RESOLVED FIXED	QA Contact:	pulseaudio-bugs
Severity:	normal
Priority:	medium	CC:	lennart
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	pactl list log

Description promeneur 2016-12-29 15:12:42 UTC

opensuse 42.2
pulseaudio 9.0
webcam logitech C310

there is only one micro, micro of webcam

in kde multimedia settings webcam is well listed and active

in pavucontrol webcam port is "microphone" and webcam is not "default alternative" this is "internal audio analog stereo" which is "default alternative"

if i set webcam to "default alternative" and i restart pc then webcam is no more "default alternative"

according to use webcam mic with hangouts for eaxample
then
in kde multimedia settings i must set to high priority webcam

Comment 1 promeneur 2017-01-02 13:39:44 UTC

i made an error.

<<if i set webcam to "default alternative" and i restart pc then webcam is no more "default alternative">> is false

Comment 2 Tanu Kaskinen 2017-01-04 18:10:50 UTC

Can you attach the output from "pactl list"?

Comment 3 promeneur 2017-01-04 22:14:10 UTC

Created attachment 128759 [details]
pactl list log

Comment 4 Tanu Kaskinen 2017-01-06 23:04:58 UTC

If I understood correctly, the problem there are two sources, the internal sound card and the webcam, and pulseaudio decides to use the internal sound card, even though it has no microphone actually attached to it. "pactl list" shows that all ports of the internal sound card source are unavailable, so PulseAudio knows that the internal sound card is unusable, but still does the stupid decision.

I believe this is caused by module-device-manager, which KDE uses to manage the device priorities. It doesn't currently understand ports at all, which means that it doesn't check whether the currently active port of a source is unavailable before deciding to use the source.

Thanks for the report, I hope this will get fixed. I can't promise any timeline for that, however.

Comment 5 Tanu Kaskinen 2017-01-06 23:10:06 UTC

I have one thing to add: I assume that by "default alternative" you mean the default source. There's always one source designated as the default source, which you can see in pavucontrol. I have submitted patches that improve the default sink and source handling, and if they get accepted, I think the webcam will be automatically chosen as the default source. However, I believe that won't really help you, because when module-device-manager does its routing, it doesn't care about the default source, because it has its own priority list of sources.

Comment 6 promeneur 2017-01-07 06:56:12 UTC

hello
thanks for all

i add a bug report also to bugs.kde.org about phonon.
https://bugs.kde.org/show_bug.cgi?id=374460

i am going to complete it with your data about module-device-manager

Comment 7 promeneur 2017-10-13 11:09:46 UTC

solved with pa 11

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