[Phonon] [Bug 430590] New: Selection of device not stored at RPI
Ralph Scharpf
bugzilla_noreply at kde.org
Sat Dec 19 17:31:22 GMT 2020
https://bugs.kde.org/show_bug.cgi?id=430590
Bug ID: 430590
Summary: Selection of device not stored at RPI
Product: Phonon
Version: 4.10.2
Platform: Debian stable
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Pulsesupport
Assignee: unassigned-bugs at kde.org
Reporter: rscharpf at onlinehome.de
CC: colin at mageia.org, myriam at kde.org, sitter at kde.org
Target Milestone: ---
I installed KDE on a Raspberry 4 PI. It is working quite well (with a
reasonable performance) but audio support is sticking to always output on the
analog output rather than using the digital output as required for HDMI output.
Selecting the output on the Phonon Device Priority has no influence. Each newly
started application will output it's audio on the analog output.
Using the tool pavucontrol-qt will give an option to select the output for each
application creating an output stream. Switching to the digital output in this
tools directs the sound to the right output.
STEPS TO REPRODUCE
1. Connect the RPI to a TV/Monitor with HDMI audio support. Leave the analog
plug unconnected (to be sure)
2. Adjust in the Systemsettings the selected output to Digital Audio in the
Multimedia->Device Priority tab.
3. If you try the Test button you should already observe that for the digital
output option there is no sound.
4. Running any app (e.g. VLC) will also not provide any outputs.
5. In VLC one may override the audio device from the VLC menu. In general, for
any streaming application the output can be overridden using the tool
pavucontrol-qt
6. The output selection will remain active as long as the application is
running. Re-starting or starting another application requires again to select
the right output.
OBSERVED RESULT
There is no way to get any sound outputs from the connected monitor/TV
EXPECTED RESULT
The default audio port shall be configurable and selection shall be persistent.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: RaspberryPI OS aka Debian Buster
(available in About System)
KDE Plasma Version: 5.14.5
KDE Frameworks Version: 5.54.0
Qt Version: 5.11.3
ADDITIONAL INFORMATION
RPI OS switched recently to make use of pulse audio. I remember that audio
support also was not working well without it, but triggering output through the
device settings made it somehow happen that audio was working.
When playing around too much in the phonon settings there may be reported an
error about broken Audio HW.
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