Following a discussion with Chris, I checked /usr/share/alsa/ucm2/ and discovered that /usr/share/alsa/ucm2/hda-dsp/ was missing.
I created it and put the files from https://github.com/alsa-project /alsa-ucm-conf/tree/master/ucm2/hda-dsp in it. I then restarted the computer and selected the 5.10.0-1035-oem kernel provided by Chris. Now, not only the sound output works as expected from internal speakers, but the internal microphone works as well! I can also plug headsets using the Jack output and the sound is output as expected. I attach pulseaudio logs for reference (without any headset connected). ** Attachment added: "pulseaudio-info.logs" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915117/+attachment/5509024/+files/pulseaudio-info.logs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915117 Title: [Regression] Audio card [8086:9d71] not detected after upgrade from linux 5.4 to 5.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915117/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
