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Fix legion 7 slim 15ach6

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Ryan Horiguchi 2022-07-17 18:19:45 +02:00
parent 76c9664813
commit 122ae8476a
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GPG key ID: CA7EE98D45A1132A
1 changed files with 14 additions and 3 deletions
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17
lenovo/legion/15ach6/default.nix
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@ -1,4 +1,6 @@
{ lib, ... }: {
{ lib, config, ... }:
let kernelPackages = config.boot.kernelPackages;
in {
imports = [
../../../common/cpu/amd
../../../common/gpu/amd
@ -16,10 +18,19 @@
# 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" ];
before = [
"systemd-backlight@backlight:${
if lib.versionOlder kernelPackages.kernel.version "5.18" then "amdgpu_bl0" else "nvidia_wmi_ec_backlight"
}.service"
];
description = "Convert 16-bit brightness values to 8-bit before systemd-backlight applies it";
script = ''
BRIGHTNESS_FILE="/var/lib/systemd/backlight/pci-0000:05:00.0:backlight:amdgpu_bl0"
BRIGHTNESS_FILE="/var/lib/systemd/backlight/${
if lib.versionOlder kernelPackages.kernel.version "5.18" then
"pci-0000:05:00.0:backlight:amdgpu_bl0"
else
"platform-PNP0C14:00:backlight:nvidia_wmi_ec_backlight"
}"
BRIGHTNESS=$(cat "$BRIGHTNESS_FILE")
BRIGHTNESS=$(($BRIGHTNESS*255/65535))
BRIGHTNESS=''${BRIGHTNESS/.*} # truncating to int, just in case