30 lines
740 B
Nix
30 lines
740 B
Nix
{ pkgs, ... }:
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let
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undervoltGpu = pkgs.writeShellScript "undervolt-gpu" ''
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set -xe
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cd $1
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echo "manual" > power_dpm_force_performance_level
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echo "1" > pp_power_profile_mode
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test -e pp_od_clk_voltage
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echo "vo -120" > pp_od_clk_voltage
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echo "c" > pp_od_clk_voltage
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'';
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in
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{
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boot.initrd.kernelModules = [ "amdgpu" ];
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boot.kernelParams = [
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"video=DP-1:1920x1080@144"
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"amdgpu.ppfeaturemask=0xfffd7fff" # enable undervolting
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];
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hardware.graphics.enable32Bit = true;
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hardware.graphics.extraPackages = with pkgs; [
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libva
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];
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services.udev.extraRules = ''
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ACTION=="add", SUBSYSTEM=="hwmon", ATTR{name}=="amdgpu", ATTR{power1_cap}="186000000", RUN+="${undervoltGpu} %S%p/device"
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'';
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}
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