Comment 99 for bug 1859754

Hi, thanks for your work! I am having some trouble and would be grateful for advice. I have a X1C7, running KDE neon (based on LTS 18.04). Two days ago the package libasound2 was updated, which I suspect broke sound & mic on my system. I had it working before on kernel 5.3.0.40 with some solutions from the web (linking sof files, blacklisting snd_hda_intel & snd_soc_skl and some other fixes). Sadly this configuration does not work anymore since the update of libasound2. I have also tried kernels 5.3.0.42, 5.3.0.45 and upstream 5.5.10. Upstream restores the function of my speakers but still no microphone. Updating libasound2 to version 1.1.3-5ubuntu0.4+++++ucm from your PPA also did not fix the mic.

pactl list card gives:
alsa.card_name = "sof-hda-dsp"
alsa.long_card_name = "LENOVO-20QD00KSUK-ThinkPadX1Carbon7th"
alsa.driver_name = "snd_soc_skl_hda_dsp"

The long_card_name is not present as a folder in /usr/share/alsa/ucm. Could that be the problem? Tried installing 1.1.9-0ubuntu1.2++++testucm but failed as it's in the repository for eoan, not bionic. Is there any other solution I could try? Thanks a lot