← Back to team overview

touch-packages team mailing list archive

[Bug 1325282] Re: USB microphone inputs not detected by Pulseaudio on Kubuntu Trusty

 

*** This bug is a duplicate of bug 1296425 ***
    https://bugs.launchpad.net/bugs/1296425

I found the root cause and wrote it in comments 21 and 22 of the
duplicate bug:

           https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-
common/+bug/1296425

SUMMARY: ubuntu-drivers-common scripts (sl-modem.py) are calling "aplay
-l" with an empty environment, thus "aplay -l" creates a new
"pulseaudio" process instead of using the session's pulseaudio, which
interferes with sound card recognition (device busy errors). There is a
one liner fix in the comment. Kubuntu calls ubuntu-drivers-common
scripts on login to KDE, but the issue affects also Ubuntu users if they
run any program that calls those scripts, until they restart.

Cheers,
Juan Manuel Cabo

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1325282

Title:
  USB microphone inputs not detected by Pulseaudio on Kubuntu Trusty

Status in “pulseaudio” package in Ubuntu:
  Confirmed

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:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1325282/+subscriptions