This bug was fixed in the package alsa-ucm-conf - 1.2.2-1ubuntu0.3
---------------
alsa-ucm-conf (1.2.2-1ubuntu0.3) focal; urgency=medium
* /d/p/0018-USB-Audio-Dell-WD15-Dock-make-input-and-output-volum.patch
Make the volume adjustable for USB audio on the Dell WD15/WD19 dock,
otherwise even we set the input volume to max, we can't record the sound
with some specific headset-mic (LP: #1893004)
-- Hui Wang <hui.w...@canonical.com> Wed, 02 Sep 2020 09:21:23 +0800
** Changed in: alsa-ucm-conf (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1893004
Title:
[SRU]alsa-ucm-conf: the volume can't be adjusted on the usb audio of
the Dell WD15/WD19 dock
Status in HWE Next:
New
Status in alsa-ucm-conf package in Ubuntu:
Fix Released
Status in alsa-ucm-conf source package in Focal:
Fix Released
Status in alsa-ucm-conf source package in Groovy:
Fix Released
Bug description:
[Impact]
On the Dell WD15/19 Dock station, there is a USB audio card, and
a headset audio jack routes to this audio card. We found if we plug
some specific headset (non-iphone type headset), we could not record
any sound from headset-mic even we set the input volume to max.
[Fix]
Improve the ucm for the audio card in this Dock, let the driver mixer
value be adjustable, then we could adjust the input volume from driver
side.
[Test Case]
plug various types of headset to the WD19 and WD15 dock stations, and
adjust the input volume from gnome, check the input volume in the driver
by running amixer, found the input volume is changed in the driver;
record the sound from headset-mic, it could record the sound from all
headsets we tested.
[Regression Risk]
It could make the PA fail to load the ucm on the machines with Dell
WD15/WD19 dock station, then users only see analogue output/input from
gnome-control-center instead of usb-speaks usb-lineout and usb-mic.
But this possibility is very low since we have tested the patch on WD15
and WD19 dock, all worked very well.
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