Public bug reported:
[System]
- Freshly installed Ubuntu 20.04.1 LTS with 3rd party software/drivers enabled
- pulseaudio 1:13.99.1-1ubuntu3.7
- NVIDIA graphics card (GeForce GTX 650 Ti Boost) using nvidia-driver-450
- Monitor with build-in (stereo) speakers connected via HDMI to graphics card
- External (stereo) speakers connected via audio jack to mainboard
[Expected Behavior]
1. Go to "Settings" -> "Sound" -> "Output" -> "Output Device"
2. Switch from "HDMI / DisplayPort 2 - GK106 HDMI Audio Controller" to "Line
Out - Built-in Audio"
3. The switching should enable the chosen output device.
[Bug Description and Behavior]
If I switch from "HDMI / DisplayPort 2 - GK106 HDMI Audio Controller" to
"Line Out - Built-in Audio" and test the output, sound comes still from
monitor speakers and not from my external speakers.
[Workaround]
While "HDMI / DisplayPort 2 - GK106 HDMI Audio Controller" selected, go
to "Configuration" and switch from "Digital Stereo (HDMI 2) Output" to
"Digital Surround 5.1 (HDMI 2) Output". Instantly "Configuration" row
disappears, in Output Device "Line Out - Built-in Audio" is selected and
external speakers are active.
[Further comments]
I'm affected by this bug and the "wrong audio output on every reboot/wake
up/login" since upgrade to 20.04 but the latter may be worth another bug report
or maybe you could guide me to an active bug report that isn't linked to a
previous Ubuntu version and already marked as fixed.
At first I thought it may be caused by failed upgrade or my system
configurations, but now I tested with a freshly installed Ubuntu on a spare SSD
and the problem still exists, so here I am.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-control-center 1:3.36.4-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 26 13:15:41 2020
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2020-10-26 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1901538
Title:
Output Device selection messed (Line Out <-> HDMI)
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