f47903a6a6
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Raise priority.session for HDMI/DisplayPort (1100) and USB (1050) ALSA outputs so the default sink follows dock plug/unplug; built-in analog wins again when externals disappear. Rules live in modules/nixos/dock-audio-rules.nix; checks.dock-audio covers the contract. Verified: V2 — flake check --no-build; checks.dock-audio green. V3 pending: HARDWARE-QUEUE #87 real HDMI/USB-dock hotplug.
39 lines
1.3 KiB
Nix
39 lines
1.3 KiB
Nix
# WirePlumber 0.5 ALSA rules: prefer dock / external sinks over built-in
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# analog when they appear (BACKLOG #87). Higher priority.session wins as
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# the default node; when HDMI/USB goes away, the next-highest (usually
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# the laptop speakers/headphones) becomes default again.
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#
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# Pure attrset so checks.dock-audio can unit-test the contract without a
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# full PipeWire stack. Consumed by modules/nixos/default.nix.
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#
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# Priorities stay ≤1500 (WirePlumber docs: sinks default ~600–1000; going
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# much higher can outrank streams / BT in surprising ways).
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{
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"monitor.alsa.rules" = [
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{
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# HDMI / DisplayPort monitor audio (names vary: .hdmi-stereo,
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# .hdmi-surround, HiFi__HDMI1__sink, …).
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matches = [
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{ "node.name" = "~alsa_output\\..*\\.hdmi-.*"; }
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{ "node.name" = "~alsa_output\\..*HDMI.*"; }
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{ "node.name" = "~alsa_output\\..*\\.DisplayPort.*"; }
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{ "node.name" = "~alsa_output\\..*\\.dp-.*"; }
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];
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actions."update-props" = {
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"priority.driver" = 1100;
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"priority.session" = 1100;
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};
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}
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{
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# USB dock / dongle audio (Thunderbolt dock, USB-C audio, …).
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matches = [
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{ "node.name" = "~alsa_output\\.usb-.*"; }
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];
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actions."update-props" = {
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"priority.driver" = 1050;
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"priority.session" = 1050;
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};
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}
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];
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}
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