Comment 23 for bug 1908167

tested the focal -proposed package on a lenovo machine (internal mic + internal spk) and a dell machine (only internal spk):

Installed 20.04 on the machine, enable the -proposed ppa, run 'sudo apt dist-upgrade', check the pulseaudio version is 1:13.99.1-1ubuntu3.10:
On the lenovo machine, plug a headset, the output changes to headphone and input changes to headset-microphone, output and input all works well, unplug the headset, the output changes back to spk and input changes back to internal mic. This fixed the regression of 1:13.99.1-1ubuntu3.9

On the Dell machine, plug a headset, the output changes to headphone and input changes to headset-microphone, output and input all works well, unplug the headset, the output changes back to spk and input changes back to blank. This fixed the regression of 1:13.99.1-1ubuntu3.9 and fixed the issue of "the headset-mic or heapdhone-mic could not be selected automatically if there is no internal mic" in the 1:13.99.1-1ubuntu3.8

verified done on focal.