[Bug 1871306] [NEW] No sound from internal card chtmax98090 - missing UCM2 files in alsa-ucm-conf 1.2.2, available in alsa-ucm-conf 1.2.3

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You have been subscribed to a public bug by Hui Wang (hui.wang):

Asus C300 (repurposed chromembook - bios flashed by Mr.Chromebox script)  - Kubuntu Focal minimal fresh installation.
The sound card is detected: I see it in the Plasma Widget, in pavucontrol, in alsamixer and it's not muted.
I tried and add in /usr/share/alsa/ucm/chtmax98090/ the old style use case config files: no success.
I tried and unmute speakers left and right in alsamixer: no success.

I rapidly tested Ubuntu Mate Focal fresh install: I had exactly the same
issue.

I'm running on the same rig Debian Bullseye, kernel 5.4: sound card
output and input are both working perfectly - I noticed that in Kubuntu
alsamixer Kubuntu when I open it I have an entry HDA IntelPCH (the HDMI
card), while in Debian I find Pulseaudio.


I attach the alsa-info.sh output.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.17
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu24
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Tue Apr  7 08:55:46 2020
InstallationDate: Installed on 2020-04-04 (2 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200401)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
--- 
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu24
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  gabriel3    937 F.... pulseaudio
 /dev/snd/controlC0:  gabriel3    937 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-04-04 (3 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200401)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 8087:07dc Intel Corp. 
 Bus 001 Device 003: ID 13d3:5657 IMC Networks USB2.0 UVC HD Webcam
 Bus 001 Device 002: ID 062a:4101 MosArt Semiconductor Corp. Wireless Keyboard/Mouse
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: GOOGLE Quawks
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=225cba91-c164-4882-95d4-4f9854a80fe9 ro quiet splash
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-21-generic N/A
 linux-backports-modules-5.4.0-21-generic  N/A
 linux-firmware                            1.187
Tags:  focal
Uname: Linux 5.4.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/17/2020
dmi.bios.vendor: coreboot
dmi.bios.version: MrChromebox-4.11.2
dmi.board.name: Quawks
dmi.board.vendor: GOOGLE
dmi.board.version: 1.0
dmi.chassis.type: 9
dmi.chassis.vendor: GOOGLE
dmi.modalias: dmi:bvncoreboot:bvrMrChromebox-4.11.2:bd03/17/2020:svnGOOGLE:pnQuawks:pvr1.0:rvnGOOGLE:rnQuawks:rvr1.0:cvnGOOGLE:ct9:cvr:
dmi.product.name: Quawks
dmi.product.version: 1.0
dmi.sys.vendor: GOOGLE

** Affects: alsa-ucm-conf (Ubuntu)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: Confirmed


** Tags: amd64 apport-bug apport-collected dist-upgrade focal
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No sound from internal card chtmax98090 - missing UCM2 files in alsa-ucm-conf 1.2.2, available in alsa-ucm-conf 1.2.3
https://bugs.launchpad.net/bugs/1871306
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