[alsa-devel] [PATCH] ALSA: hda - Fix Dock Headphone on Thinkpad X250 seen as a Line Out

[Raymond Yau]

>>>
>>> Thinkpad X250, when attached to a dock, has two headphone outs but
>>> no line out. Make sure we don't try to turn this into one headphone
>>> and one line out (since that disables the headphone amp on the dock).
>>>
>>> Alsa-info at
http://www.alsa-project.org/db/?f=36f8764e1d782397928feec715d0ef90dfddd4c1
>>>
>>> Cc: stable at vger.kernel.org
>>> Signed-off-by: David Henningsson <david.henningsson at canonical.com>
>>
>>
>> This is one of fixes I had in mind (and asked for testing in bugzilla
>> kernel.org report).
>
>
> Sorry, I'm missing context. What report?

https://bugzilla.kernel.org/show_bug.cgi?id=99721

T440 support headset and thinkpad pro dock combo jack has headset icon

If headset mic has higher priority than dock headset mic, it is strange
that headset don't auto mute dock headset