Unfortunately it's not fixed (on laptops not using -proposed) and somehow broken on my laptop again (using -proposed). I just had to kill pulseaudio again to get the headphones and microphone to be both detected (else only the microphone was detected).
We install the laptops using 18.04.3, updating everything to the latest updates using the default repository settings Ubuntu suggests, install some additional software (Skype, Teamviewer, some internal python tools (unrelated to sound)), and then it's broken. When rolling out a laptop without installing updates the problem does not appear. If there is anything I can provide (log files, debugger traces) just tell me (and in case of debugger traces how to obtain them). libasound2-data libasound2:amd64 libasound2:i386 are currently installed from -proposed in version 1.1.3-5ubuntu0.5. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to alsa-lib in Ubuntu. https://bugs.launchpad.net/bugs/1865499 Title: pulseaudio doesn't detect (new) USB headset Status in alsa-lib package in Ubuntu: Incomplete Bug description: When booting the system (Lenovo Thinkpad L480/L490), all connected USB headsets are recognized and can be used, and configured via pavucontrol. When hot-plugging the USB headset, either the speaker is recognized, or the microphone, rarely both. But when both are recognized, the microphone is always a "multichannel" device. When both the speaker and the "multichannel" microphone are recognized, only one can be used - either speaker or microphone. When selecting the speaker, the microphone is switched back to any other device available, them same goes for the microphone and the speaker - any other speaker is selected. A workaround is to plug in the USB headset and run "pkill -U $USER pulseaudio". Everything works fine until the next hot-plug (eg. a second headset). Running "lsb_release -a" gives No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.4 LTS Release: 18.04 Codename: bionic Attached is the output from "ubuntu-bug pulseaudio". Currently 10 % of our users are affected by this bug, all running the same Ubuntu and package versions. I activated the proposed repository to check if any updates available fix the problem, but to no avail. I also switched kernels (from 4.15 to 5.5 mainline from https://wiki.ubuntu.com/Kernel/MainlineBuilds). I read bug #1325282 (https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1325282) and it sounds somewhat very familiar, but instead of "env={}" in /usr/share/ubuntu-drivers-common/detect/sl-modem.py there's "env=env". Removing "env=env" doesn't resolve the problem. Do you require additional information? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1865499/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
