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spica
Guru
Joined: 04 Jun 2021
Posts: 333
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 Posted: Wed Jan 08, 2025 7:48 pm Post subject: Microphone onboard - headset automatic switch |
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Hi All,
I recently got new hardware, and I’m encountering an issue where, when I plug my headset into the laptop, two separate microphones are detected.
This causes confusion, as I’m unsure which microphone is being used by applications.
I need a way to configure the system to automatically disable the onboard microphone when the headset is connected, ensuring the correct microphone is used.
A little bit about the setup:
| Code: | 00:1f.3 Audio device [0403]: Intel Corporation Meteor Lake-P HD Audio Controller [8086:7e28] (rev 20)
Subsystem: Lenovo Device [17aa:50e9]
Kernel driver in use: sof-audio-pci-intel-mtl
Kernel modules: snd_hda_intel, snd_sof_pci_intel_mtl |
| Code: | $ emerge -pv pipewire
[ebuild R ] media-video/pipewire-1.2.6:0/0.4::gentoo USE="X bluetooth dbus gstreamer jack-sdk readline sound-server ssl systemd -doc -echo-cancel (-elogind) -extra -ffmpeg -flatpak -gsettings -ieee1394 -jack-client -liblc3 -lv2 -man -modemmanager -pipewire-alsa -roc (-selinux) (-system-service) -test -v4l -zeroconf" 0 KiB |
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spica
Guru
Joined: 04 Jun 2021
Posts: 333
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| Posted: Fri Jan 10, 2025 1:52 pm Post subject: |
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According to https://danielpower.ca/blog/wireplumber-device-priority, the default device is selected according to priority.
This is what I observe when headset is not connected: | Code: | # wpctl status:
Audio
├─ Sources:
│ * 53. Board Microphone [vol: 0.75]
│ 158. Headphones Microphone [vol: 0.36]
Settings
└─ Default Configured Devices:
1. Audio/Source alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source
# wpctl inspect 53:
node.name = "alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source"
priority.driver = "1648"
priority.session = "1648"
# wpctl inspect 158:
node.name = "alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic2__source"
priority.driver = "2000"
priority.session = "2000" |
When headset is connected: | Code: | # wpctl status:
Audio
├─ Sources:
│ 72. Headphones Microphone [vol: 0.36]
│ * 143. Board Microphone [vol: 0.75]
Settings
└─ Default Configured Devices:
1. Audio/Source alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source
# wpctl inspect 143:
node.name = "alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source"
priority.driver = "1648"
priority.session = "1648"
# wpctl inspect 72:
node.name = "alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic2__source"
priority.driver = "2000"
priority.session = "2000" |
As we can see, priorities do not work, Mic1 is default source in both observations, however it has lower priority  |
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Ralphred
l33t
Joined: 31 Dec 2013
Posts: 694
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| Posted: Fri Jan 10, 2025 5:31 pm Post subject: |
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Have you tried reversing the priorities? I don't expect it to work but it's worth a try.
If/when it doesn't work run 'udevadm monitor' and see if pluging-in/removing the headphones generates a udev event, then you can "workaround" the wireplumber issue with some udev rules/scripting. |
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