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