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https://github.com/NixOS/nixos-hardware
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31 lines
1.1 KiB
Nix
31 lines
1.1 KiB
Nix
{ nixos, pkgs, config, stdenv, ... }:
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{
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imports = [
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../../../common/cpu/intel
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../../../common/pc/laptop/acpi_call.nix
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../../../common/pc/laptop/cpu-throttling-bug.nix
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../.
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];
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services = {
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# This fixes the pulseaudio profiles of the Thinkpad T490.
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# The laptop contains a single audio card with 5 sub-devices. Default pulseaudio only offers a single sink
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# which can only be switched between speaker/HDMI via a manual profile change.
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# This configures a profile set for pulseaudio which offers multiple sinks corresponding to the
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# speaker + 4 HDMI ports. This allows the user to play audio streams on the speaker and any of the 4 HDMI/USB-C
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# ports at the same time.
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udev.extraRules = let
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t490ProfileSet = ./t490-profile-set.conf;
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in ''
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SUBSYSTEM!="sound", GOTO="pulseaudio_end"
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ACTION!="change", GOTO="pulseaudio_end"
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KERNEL!="card*", GOTO="pulseaudio_end"
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# Lenovo T490
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ATTRS{vendor}=="0x8086" ATTRS{device}=="0x9dc8" ATTRS{subsystem_vendor}=="0x17aa", ATTRS{subsystem_device}=="0x2279", ENV{PULSE_PROFILE_SET}="${t490ProfileSet}"
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LABEL="pulseaudio_end"
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'';
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};
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}
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