desktop-packages team mailing list archive

[Samuli Kauranne <samuli.kauranne@xxxxxxxxx>]

Confirm that the issue still exists in Ubuntu 15.04 with Pure-Fi Mobile.
In this release neither of the previously suggested workarounds (without
rebooting) seem to work. modprobme terminates with "FATAL: snd_usb_audio
is in use"

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https://bugs.launchpad.net/bugs/1027791

Title:
  USB speakers don't work after reconnecting

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  I have a set of Logitech PureFi Mobile speakers. If I connect them
  using USB, they work fine - but if I unplug and reconnect them (or
  power cycle the speakers or the USB hub), they stop working. When
  trying to reconnect them, the connection lights on the speakers
  flicker and then go out. Likewise, in the Output tab of the Sound
  Settings app, the device is listed momentarily and then disappears
  again.

  Workaround: reboot, or unload the USB sound module: `sudo modprobe -r
  snd_usb_audio` - then everything works well again.

  The device is listed from `lsusb` as:

      Bus 001 Device 043: ID 046d:ba08 Logitech, Inc.

  I also have two PCI audio devices; the output of `lspci | grep -i aud`
  is below. This bug seems to be unrelated to these devices, but they
  are included for completeness.

      00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
      02:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cedar HDMI Audio [Radeon HD 5400/6300 Series]

  Attached is an excerpt from /var/log/syslog, showing the difference
  between a successful connection and a failed one.

  Versions:
  Ubuntu 12.04 (64-bit)
  alsa-base 1.0.25+dfsg-0ubuntu1
  pulseaudio 1:1.1-0ubuntu15.1

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