A link that provides a solution : https://www.reddit.com/r/debian/comments/1khom7n/debian_testing_61225amd64_no_sound_on_thinpad_x13/
The sound problem stems from the fact that the Intel audio DSP can no longer boot because the Intel Management Engine is broken. Reinstalling ME restores the boot chain, allowing the sound to return. Run the command below to obtain the identifier: yes no | fwupdmgr get-devices | grep "Management Engine" -A 10 | grep "Device ID:" En attente…: 0% │ Device ID: <device-id> Then reinstall the Intel Management Engine with this command: sudo fwupdmgr reinstall <device-id> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2130757 Title: Comet Lake PCH-LP cAVS: Analog audio (Realtek ALCxxx) not detected, only HDMI outputs present (Dummy Output issue). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2130757/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
