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nixos-hardware/lenovo/legion/15ach6/default.nix
2022-03-23 13:44:38 +01:00

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Nix

{ lib, ... }: {
imports = [
../../../common/cpu/amd
../../../common/gpu/amd
../../../common/gpu/nvidia.nix
../../../common/pc/laptop
../../../common/pc/laptop/ssd
];
hardware.nvidia.prime = {
amdgpuBusId = "PCI:5:0:0";
nvidiaBusId = "PCI:1:0:0";
};
services.thermald.enable = lib.mkDefault true;
# https://wiki.archlinux.org/title/backlight#Backlight_is_always_at_full_brightness_after_a_reboot_with_amdgpu_driver
systemd.services.fix-brightness = {
before = [ "systemd-backlight@backlight:amdgpu_bl0.service" ];
description = "Convert 16-bit brightness values to 8-bit before systemd-backlight applies it";
script = ''
BRIGHTNESS_FILE="/var/lib/systemd/backlight/pci-0000:05:00.0:backlight:amdgpu_bl0"
BRIGHTNESS=$(cat "$BRIGHTNESS_FILE")
BRIGHTNESS=$(($BRIGHTNESS*255/65535))
BRIGHTNESS=''${BRIGHTNESS/.*} # truncating to int, just in case
echo $BRIGHTNESS > "$BRIGHTNESS_FILE"
'';
serviceConfig.Type = "oneshot";
wantedBy = [ "multi-user.target" ];
};
}