[MacBookPro14,1, Cirrus Logic Generic, Speaker, Internal] No sound at all

[Jess Ingrassellino]

New install of 20.04.1 on 1/31/2021 onto MacBookPro

The "startup tone" plays when I start or re-start my computer.

When I enter my password and login to my computer I expect to go to the audio settings, test the sound, and have the sound test work. I expect to hear media played back through my web browser. I expect to hear sound from my headphones or internal speakers.

The actual behavior is that I am unable to hear sounds from my internal speakers or through headphones.

Steps to troubleshoot (all cmd line steps performed as root):
- checked sound not muted, system settings set correctly via cmd line
- performed sound test with headphones and external speakers.
- uninstall/reinstall/reload alsa
- apt-get remove timidity
- add snd-hda-intel.dmic_detect=0 setting to boot config

I tried these steps using various tutorials from users having similar problems, and performed restarts after install/uninstall, reload of software, or config change.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jess 1289 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 31 16:03:32 2021
InstallationDate: Installed on 2021-01-31 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jess 1289 F.... pulseaudio
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [MacBookPro14,1, Cirrus Logic Generic, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/03/2020
dmi.bios.release: 0.1
dmi.bios.vendor: Apple Inc.
dmi.bios.version: 429.60.3.0.0
dmi.board.name: Mac-B4831CEBD52A0C4C
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro14,1
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-B4831CEBD52A0C4C
dmi.modalias: dmi:bvnAppleInc.:bvr429.60.3.0.0:bd11/03/2020:br0.1:svnAppleInc.:pnMacBookPro14,1:pvr1.0:rvnAppleInc.:rnMac-B4831CEBD52A0C4C:rvrMacBookPro14,1:cvnAppleInc.:ct9:cvrMac-B4831CEBD52A0C4C:
dmi.product.family: MacBook Pro
dmi.product.name: MacBookPro14,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.