Comment 10 for bug 1872108

I just also ran alsa-info on my Mint 19.3 (Ubuntu 18.04 with 5.3.0-40 kernel and my "fix" where bass works!!). Maybe it helps investigating.
http://alsa-project.org/db/?f=0fb55e2c97b8b3a9061f9878a1c5a1305b6b95a1

What do you mean with upstream needs a solution first @hui.wang. Can you give us more info here? Also if we can somehow help otherwise instead of only wait for it?