https://bugs.kde.org/show_bug.cgi?id=507447
Bug ID: 507447
Summary: Volume hotkeys controlling wrong audio device when
Audio Volume Widget visible
Classification: Plasma
Product: plasmashell
Version First 6.4.3
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: Audio Volume widget
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 183492
--> https://bugs.kde.org/attachment.cgi?id=183492&action=edit
Screenshot: EQ Sink active, but volume of Analog Stereo output gets changed by
hotkeys.
SUMMARY
While the Audio Volume Widget is active, and the user has set a virtual ouput
(like an EQ Sink) to be the active pipewire output device, the "Volume Up",
"Volume Down" hotkeys will not adjust the volume of that chosen output device,
but instead that of the underlying hardware device.
While the Audio Volume Widget is not active, the volume hotkeys show the
supposedly expected (?) behaviour of controlling the actually chosen (virtual
sink) audio device's volume.
STEPS TO REPRODUCE
1. Create a virtual device, for example in
> ~/.config/pipewire/pipewire.conf.d/EQ.conf
with
> context.modules = [
> { name = libpipewire-module-filter-chain
> args = {
> node.description = "EQ Sink"
> media.name = "EQ Sink"
> filter.graph = {
> nodes = [
> {
> type = builtin
> name = eq_band_1
> label = bq_peaking
> control = { "Freq" = 8000.0 "Q" = 2.0 "Gain" = -3.0 }
> }
> {
> type = builtin
> name = eq_band_2
> label = bq_highshelf
> control = { "Freq" = 10000.0 "Q" = 1.0 "Gain" = -11.0 }
> }
> ]
> links = [
> { output = "eq_band_1:Out" input = "eq_band_2:In" }
> ]
> }
> audio.channels = 2
> audio.position = [ FL FR ]
> capture.props = {
> node.name = "effect_input.headphone_eq"
> media.class = Audio/Sink
> }
> playback.props = {
> node.name = "effect_output.headphone_eq"
> node.passive = true
> }
> }
> }
> ]
2. Reboot
3. In the Audio Volume Widget, select the "EQ Sink" as the output device and
manually set the values to of the virtual and the physical outputs to different
values, so it's easier to tell them apart when changing volume via hotkeys.
Say, set to "100" for the EQ Sink and to "40" for the physical device.
4. Use volume hotkeys to increase/decrease volume, once with the "Audio Volume
Widget" visible, once with it hidden.
OBSERVED RESULT
When the Audio Volume Widget is hidden, the volume hotkeys correctly control
the active/selected EQ Sink device's volume, starting out at the 100 we left it
at in the previous step.
When the Audio Volume Widget is visible, the volume hotkeys control the
physical device's volume starting out at the 40 we left it at in the previous
step.
EXPECTED RESULT
The volume hotkeys should always control the volume of the active/selected
device, even if that device is a virtual sink.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch x86_64 on 6.15.7 Kernel
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Wayland, Pipewire
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