Public bug reported:
Sometimes I can solve this by selecting Digital Output and reselecting
Analog.
Description: Ubuntu 16.04.4 LTS
Release: 16.04
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:8.0-0ubuntu3.10
ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Jun 29 13:40:37 2018
InstallationDate: Installed on 2018-01-06 (173 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Intern geluid - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: No sound at all
Title: [iMac14,2, Cirrus Logic CS4206, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/21/2017
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM142.88Z.0123.B00.1708211454
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-27ADBB7B4CEE8E61
dmi.board.vendor: Apple Inc.
dmi.board.version: iMac14,2
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-27ADBB7B4CEE8E61
dmi.modalias:
dmi:bvnAppleInc.:bvrIM142.88Z.0123.B00.1708211454:bd08/21/2017:svnAppleInc.:pniMac14,2:pvr1.0:rvnAppleInc.:rnMac-27ADBB7B4CEE8E61:rvriMac14,2:cvnAppleInc.:ct13:cvrMac-27ADBB7B4CEE8E61:
dmi.product.family: iMac
dmi.product.name: iMac14,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1779301
Title:
[iMac14,2, Cirrus Logic CS4206, Speaker, Internal] No sound
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