Public bug reported:
Background:
My audio used to work correctly. I recently attached the device to my TV using
HDMI. The audio kept playing from laptop's speakers. So, from settings, I
changed the audio output to HDMI. It worked correctly.
Issue:
After removing the cable, I had no audio. I could go to the settings > audio
page, and see that the output was set back to speakers. The test sounds from
the settings worked, but no sound from other apps.
Expected:
System and apps sound to come out of laptop's speakers.
Workaround:
What I did to fix this, was to reattach the HDMI cable to the TV, this time the
audio started automatically playing on the TV (while the first time I had to
explicitly select it). I went to settings > audio and I changed the audio
output (which was now set on HDMI) back to the laptop's speakers. Once
detaching the HDMI, the audio continued working correctly from the speakers
like it used to do.
Summary:
In short, the automatic audio switching for HDMI, is not working correctly, and
especially is not switching properly for applications. Possibly it is just
switching for some low level interface.
Willing to help with triaging and test.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: pulseaudio 1:11.1-1ubuntu7.2
ProcVersionSignature: Ubuntu 4.15.0-65.74-generic 4.15.18
Uname: Linux 4.15.0-65-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: giorgia 1786 F.... pulseaudio
/dev/snd/controlC2: giorgia 1786 F.... pulseaudio
/dev/snd/controlC1: giorgia 1786 F.... pulseaudio
CurrentDesktop: communitheme:ubuntu:GNOME
Date: Tue Oct 22 10:41:15 2019
InstallationDate: Installed on 2018-09-17 (399 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/29/2018
dmi.bios.vendor: Alienware
dmi.bios.version: A15
dmi.board.name: 068R5X
dmi.board.vendor: Alienware
dmi.board.version: A03
dmi.chassis.type: 8
dmi.chassis.vendor: Alienware
dmi.chassis.version: A15
dmi.modalias:
dmi:bvnAlienware:bvrA15:bd01/29/2018:svnAlienware:pnAlienware17:pvrA15:rvnAlienware:rn068R5X:rvrA03:cvnAlienware:ct8:cvrA15:
dmi.product.family: 00
dmi.product.name: Alienware 17
dmi.product.version: A15
dmi.sys.vendor: Alienware
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1849268
Title:
No audio after unplugging HDMI (with workaround)
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