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Message #92017
[Bug 1385680] Re: Thinkpad X240 dock - no audio
A patch titled "ALSA: hda - Add ultra dock support for Thinkpad X240" is
in the 3.16.0-29.39 kernel which is currently in utopic-proposed. For
instructions on how to enable -proposed, see
https://wiki.ubuntu.com/Testing/EnableProposed
** Changed in: alsa-driver (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1385680
Title:
Thinkpad X240 dock - no audio
Status in alsa-driver package in Ubuntu:
Fix Committed
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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References