Bug 89237

Summary:	Removing mic Breaks Stereo Output
Product:	PulseAudio	Reporter:	andy.mckellar
Component:	misc	Assignee:	pulseaudio-bugs
Status:	RESOLVED MOVED	QA Contact:	pulseaudio-bugs
Severity:	normal
Priority:	medium	CC:	lennart
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description andy.mckellar 2015-02-19 23:23:47 UTC

If I remove my microphone (rear plugin), both stereo channels get routed to both speakers rather than being separated; also, if both channels are identical, they cancel out and I get nothing.  That is to say, if I use the system "Sound" utility and select a speaker to test, the test sound comes out of both speakers rather than just left or just right; if I play a game with monoaural sounds, the game sounds that normally come out of both speakers are completely muted.  Plugging the microphone back in restores normal functionality, so this is a minor nuisance for now, except I worry about (1) my microphone breaking and (2) malware listening to my mic (minor issues as well, I suppose).

Comment 1 Raymond 2015-02-21 14:54:45 UTC

seem like driver bug

does it also happen when you use alsa hw:0,0 device when using speaker-test ?

speaker-test -D hw:0,0 -c2 -t wav

aplay -D plughw:0,0 mono.wav

Comment 2 andy.mckellar 2015-02-22 02:19:49 UTC

(In reply to Raymond from comment #1)
> seem like driver bug
> 
> does it also happen when you use alsa hw:0,0 device when using speaker-test ?
> 
> speaker-test -D hw:0,0 -c2 -t wav
> 
> aplay -D plughw:0,0 mono.wav

It's gone away, I don't know why or how.  It was real while it lasted -- about four days -- but I can't reproduce it now.  (I used to hate problems like this, they always drove me up the wall...)

BTW, "mono.wav" appears to be one of your personal files; I don't have it.

Comment 3 GitLab Migration User 2018-07-30 10:37:05 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/533.

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