[Bug 1895669] Re: Add more support to Lenovo ThinkStation P620

Timo Aaltonen 1895669 at bugs.launchpad.net
Thu Sep 17 07:00:08 UTC 2020


Hello Kai-Heng, or anyone else affected,

Accepted alsa-ucm-conf into focal-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/alsa-ucm-
conf/1.2.2-1ubuntu0.4 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Tags added: verification-needed verification-needed-focal

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https://bugs.launchpad.net/bugs/1895669

Title:
  Add more support to Lenovo ThinkStation P620

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 Committed
Status in alsa-ucm-conf source package in Groovy:
  Fix Released

Bug description:
  [Impact]
  After upgrading the audio device firmware and doing more testing, we found some new audio issue on Lenovo P620:
  1) Rear mic doesn't work.
  2) Front and rear mic/line-in don't use hardware gain to control capture volume.

  [Fix]
  For 1), add proper PCM stream assignment to the rear microphone.
  For 2), add MixerElem to let alsa-lib and PulseAudio to pick correct mixer to change HW gain.

  [Test]
  With the new UCM applied, rear mic starts to work, and PulseAudio can control the hardware gain.

  [Regression Potential]
  The system hasn't hit the market so there's no chance to regression any system in the wild.

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