I just tried plugging in my second USB device and only the playback
device was recognized, the microphone was not. Here is the output:
$ fuser -v /dev/snd/*
GEBRUIKER PID SOORT PROGRAMMA
/dev/snd/controlC0: julius 3304 F.... pulseaudio
julius 4056 F.... pulseaudio
/dev/snd/controlC1: julius 3304 F.... pulseaudio
julius 4056 F.... pulseaudio
/dev/snd/controlC2: julius 3304 F.... pulseaudio
julius 4056 F.... pulseaudio
/dev/snd/pcmC0D3p: julius 3304 F...m pulseaudio
/dev/snd/pcmC1D0c: julius 3304 F...m pulseaudio
/dev/snd/pcmC1D0p: julius 3304 F...m pulseaudio
The new device is on /dev/snd/pcmC2* so it doesn't seem to be used by something
else. I'm a bit surprised there are two pulseaudios with different PIDs active
though. Could that be a problem?
I'm in a phone call (pcmC1) and playing music over HDMI (pcmC0D3), so it's
correct it's using those devices. When I do a reboot, it seems the device is
always recognized properly. It's just hot-plugging which doesn't tend to work
correctly.
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https://bugs.launchpad.net/bugs/1325282
Title:
USB microphone inputs not detected by Pulseaudio on Kubuntu Trusty
Status in “pulseaudio” package in Ubuntu:
New
Bug description:
When I connect an audio device using USB, I can only use it to play
back stereo sound. Anything else is not detected. I tried it with two
different devices and they both give me the same result. Neither in
KDE nor in Google Hangouts, I can use my microphone. It does not show
up as a selectable input device anywhere.
ALSA does seem to correctly detect that these USB devices have a
microphone.
The microphone of my internal audio does work.
Ubuntu release is 14.04
Package version of Pulseaudio is 1:4.0-0ubuntu11
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Jun 1 01:13:50 2014
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/08/2008
dmi.bios.version: 1.04
dmi.board.name: JHL91
dmi.board.version: REFERENCE
dmi.chassis.type: 1
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvn:bvr1.04:bd07/08/2008:svn:pn:pvr:rvn:rnJHL91:rvrREFERENCE:cvn:ct1:cvrN/A:
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