@roland and Janos,
For ucm, please refer to https://bugs.launchpad.net/bugs/1868210 and https://bugs.launchpad.net/bugs/1859754, if current ucm doesn't cover your machine, you could do some change based on existing ucm, then SRU them to ubuntu 19.10 and 18.04.
For ubuntu 20.04, since the alsa-lib supports the ucm2, we could use one single ucm to cover all machines. So we will not have this trouble under 20.04.
@roland and Janos,
For ucm, please refer to https:/ /bugs.launchpad .net/bugs/ 1868210 and https:/ /bugs.launchpad .net/bugs/ 1859754, if current ucm doesn't cover your machine, you could do some change based on existing ucm, then SRU them to ubuntu 19.10 and 18.04.
For ubuntu 20.04, since the alsa-lib supports the ucm2, we could use one single ucm to cover all machines. So we will not have this trouble under 20.04.