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[Lukas <1385680@xxxxxxxxxxxxxxxxxx>]

Please find attached a patch based on [1].


[1] git://kernel.ubuntu.com/ubuntu/ubuntu-utopic.git

** Patch added: "lenovo-ultradock.patch"
   https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1385680/+attachment/4245521/+files/lenovo-ultradock.patch

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https://bugs.launchpad.net/bugs/1385680

Title:
  Thinkpad X240 dock - no audio

Status in “alsa-driver” package in Ubuntu:
  Confirmed

Bug description:
  After connecting a thinkpad x240 to lenovo's ultra dock, an audio
  cable plugged into the dock's jack does not yield any sound output.
  This bug is very similar to bug #1265344 and was also reported at [1]
  and more context is available at [2].  Maybe it is sufficient to
  extend [3] to the x240 model?

  [1] https://bugzilla.redhat.com/show_bug.cgi?id=1150594
  [2] https://github.com/leoluk/thinkpad-stuff/wiki/Haswell-ThinkPad-problems#linux-docking-station-audio-compatibility
  [3] http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=1c37c22332a2d2c1b4ab32177a4f847c7fe06e38

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