https://bugs.kde.org/show_bug.cgi?id=520594
Bug ID: 520594
Summary: Built-in microphone mute is lost after suspend/resume,
while wpctl set-mute @DEFAULT_SOURCE@ 1 persists
Classification: Plasma
Product: plasmashell
Version First 6.6.4
Reported In:
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Audio Volume widget
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
When I mute my laptop microphone using KDE Plasma’s built-in microphone mute
action / shortcut, the microphone becomes unmuted after suspend/resume.
This only happens with Plasma’s built-in mute path. If I mute the same default
source with:
wpctl set-mute @DEFAULT_SOURCE@ 1
then the microphone stays muted after suspend/resume.
Because of that, this looks like a Plasma audio integration issue rather than a
PipeWire/WirePlumber issue.
Important detail: on the same laptop, in regular Ubuntu with GNOME, this
problem did not exist. It only started after I installed and started using KDE
Plasma.
STEPS TO REPRODUCE
1. Mute the default microphone using KDE Plasma’s built-in microphone mute
shortcut / action.
2. Suspend the laptop.
3. Resume the laptop from suspend.
OBSERVED RESULT
The microphone is unmuted after resume.
EXPECTED RESULT
The microphone should remain muted after resume.
SOFTWARE/OS VERSIONS
Operating System (available in the Info Center app, or by running `kinfo` in a
terminal window):
Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.4
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Additional system information:
Kernel Version: 7.0.0-15-generic (64-bit)
Graphics Platform: Wayland
Manufacturer: LENOVO
Product Name: 83DF
System Version: Legion Pro 5 16IRX9
ADDITIONAL INFORMATION
My default source is:
alsa_input.pci-0000_00_1f.3.analog-stereo
What I verified:
- Muting with Plasma’s built-in microphone mute action does NOT persist across
suspend/resume.
- Muting with:
wpctl set-mute @DEFAULT_SOURCE@ 1
DOES persist across suspend/resume.
This makes it look like Plasma’s built-in microphone mute handling is the part
that is failing, while the underlying PipeWire mute state itself can be
restored correctly when controlled through `wpctl`.
The fact that the same laptop did not have this issue in regular Ubuntu with
GNOME also suggests that this is Plasma-specific rather than a hardware or
kernel problem.
Workaround script that fixes the problem for me and still shows a notification:
#!/bin/bash
DBUS_CMD="$(command -v qdbus6 || command -v qdbus-qt6 || command -v qdbus)"
wpctl set-mute @DEFAULT_SOURCE@ toggle
STATE="$(wpctl get-volume @DEFAULT_SOURCE@)"
LEVEL="$(echo "$STATE" | sed -n 's/.*Volume: \([0-9.]*\).*/\1/p')"
PERCENT="$(awk "BEGIN { printf \"%d\", $LEVEL * 100 }")"
make_bar() {
local percent=$1
local width=10
local filled=$(( percent * width / 100 ))
local empty=$(( width - filled ))
local bar="["
for ((i=0; i<filled; i++)); do
bar+="▰"
done
for ((i=0; i<empty; i++)); do
bar+="▱"
done
bar+="]"
echo "$bar"
}
BAR="$(make_bar "$PERCENT")"
if [ -n "$DBUS_CMD" ]; then
if echo "$STATE" | grep -q MUTED; then
"$DBUS_CMD" org.kde.plasmashell /org/kde/osdService
org.kde.osdService.showText \
microphone-sensitivity-muted "Mikrofon wyciszony"
else
"$DBUS_CMD" org.kde.plasmashell /org/kde/osdService
org.kde.osdService.showText \
audio-input-microphone "Mikrofon ${BAR} ${PERCENT}%"
fi
fi
How users can assign this workaround to a keyboard shortcut:
- save the script somewhere, for example `~/.local/bin/mic-toggle`
- make it executable with:
chmod +x ~/.local/bin/mic-toggle
- in System Settings, create a custom keyboard shortcut that runs:
~/.local/bin/mic-toggle
KDE’s Custom Shortcuts module supports binding a shortcut to a command.
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