Comment 18 for bug 1869819

Looks like this SRU introduced a regression in the focal and a couple of related bugs are filed by ubuntu 20.04 users (at least most of Dell machines will be affected):

https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1876065
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1875249
https://bugs.launchpad.net/bugs/1873384
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1875032
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1875714

Although this SRU is based on my work of Jan 2019 (https://lists.freedesktop.org/archives/pulseaudio-discuss/2019-January/030761.html), it has been a long time, I already forgot the detail about my patches.

So Kaiheng and Hugh, please take a look at this issue again, maybe the regression was already in my original patches or maybe your rebasement on focal introduced the regression.

thx.