With the -1ubuntu2 package, I no longer get a crash dump, but the audio is still not working. pulseaudio is aborting. Here is what is in syslog from bootup: Apr 18 01:13:09 shh dbus-daemon[1218]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.31' (uid=122 pid=1443 comm="/usr/bin/pulseaudio --daemonize=no " label="unconfined") ... Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic1, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic2, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line2, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Headphones, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line1, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Speaker, assuming stereo duplex. Apr 18 01:13:10 shh pulseaudio[1443]: E: [pulseaudio] alsa-ucm.c: Assertion 'jack' failed at modules/alsa/alsa-ucm.c:2158, function device_add_hw_mute_jack(). Aborting. ... Apr 18 01:13:10 shh systemd[1432]: pulseaudio.service: Main process exited, code=dumped, status=6/ABRT Apr 18 01:13:10 shh systemd[1432]: pulseaudio.service: Failed with result 'core-dump'. Apr 18 01:13:10 shh systemd[1432]: Failed to start Sound Service. Apr 18 01:13:10 shh systemd[1432]: Dependency failed for GNOME Sound sample caching handling. Apr 18 01:13:10 shh systemd[1432]: gsd-sound.target: Job gsd-sound.target/start failed with result 'dependency'. ... Apr 18 01:13:10 shh systemd[1432]: pulseaudio.service: Scheduled restart job, restart counter is at 1. ... Apr 18 01:13:10 shh systemd[1432]: Stopped Sound Service. Apr 18 01:13:10 shh systemd[1432]: Starting Sound Service... ... Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] pid.c: Stale PID file, overwriting. ... Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic1, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic2, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line2, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Headphones, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line1, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Speaker, assuming stereo duplex. Apr 18 01:13:11 shh pulseaudio[1790]: E: [pulseaudio] alsa-ucm.c: Assertion 'jack' failed at modules/alsa/alsa-ucm.c:2158, function device_add_hw_mute_jack(). Aborting. Apr 18 01:13:12 shh systemd[1432]: pulseaudio.service: Main process exited, code=dumped, status=6/ABRT Apr 18 01:13:12 shh systemd[1432]: pulseaudio.service: Failed with result 'core-dump'. Apr 18 01:13:12 shh systemd[1432]: Failed to start Sound Service. Apr 18 01:13:12 shh systemd[1432]: Startup finished in 2.727s. Apr 18 01:13:12 shh systemd[1432]: pulseaudio.service: Scheduled restart job, restart counter is at 2. Apr 18 01:13:12 shh systemd[1432]: Stopped Sound Service. Apr 18 01:13:12 shh systemd[1432]: Starting Sound Service... Apr 18 01:13:12 shh rtkit-daemon[1539]: Successfully made thread 1864 of process 1864 owned by '122' high priority at nice level -11. Apr 18 01:13:12 shh rtkit-daemon[1539]: Supervising 1 threads of 1 processes of 1 users. Apr 18 01:13:12 shh pulseaudio[1864]: W: [pulseaudio] pid.c: Stale PID file, overwriting. ... Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic1, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Mic2, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line2, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Headphones, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Line1, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: W: [pulseaudio] alsa-ucm.c: UCM file does not specify 'PlaybackChannels' or 'CaptureChannels'for device Speaker, assuming stereo duplex. Apr 18 01:13:13 shh pulseaudio[1864]: E: [pulseaudio] alsa-ucm.c: Assertion 'jack' failed at modules/alsa/alsa-ucm.c:2158, function device_add_hw_mute_jack(). Aborting. Apr 18 01:13:13 shh systemd[1432]: pulseaudio.service: Main process exited, code=dumped, status=6/ABRT Apr 18 01:13:13 shh systemd[1432]: pulseaudio.service: Failed with result 'core-dump'. Apr 18 01:13:13 shh systemd[1432]: Failed to start Sound Service. ... (it went around a few more times, then...) Apr 18 01:13:16 shh systemd[1432]: pulseaudio.socket: Failed with result 'service-start-limit-hit'. $ apt-cache policy pulseaudio pulseaudio: Installed: 1:13.99.1-1ubuntu2 Candidate: 1:13.99.1-1ubuntu2 Version table: *** 1:13.99.1-1ubuntu2 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages 100 /var/lib/dpkg/status Does this help?