monolith: fix amdgpu performance in new kernels

hosts/monolith/default.nix

@@ -23,6 +23,7 @@ in
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
     ./partition.nix
+    ./undervolt.nix
   ];
   boot.initrd.availableKernelModules = [
     "nvme"
@@ -64,16 +65,6 @@ in
     rocmPackages.rocm-smi
   ];
 
-  boot.kernelPackages = pkgs.linuxPackages_6_1;
-
-  programs.corectrl = {
-    enable = true;
-    gpuOverclock = {
-      enable = true;
-      ppfeaturemask = "0xffffffff";
-    };
-  };
-
   fileSystems."/mnt/old" = {
     device = "/dev/disk/by-label/BTRFS_ROOT";
     fsType = "btrfs";

hosts/monolith/undervolt.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+let
+  undervoltGpu = pkgs.writeShellScript "undervolt-gpu" ''
+    set -xe
+    cd $1
+    echo "manual" > power_dpm_force_performance_level
+    echo "1" > pp_power_profile_mode
+    test -e pp_od_clk_voltage
+    echo "vo -100" > pp_od_clk_voltage
+    echo "c" > pp_od_clk_voltage
+  '';
+in
+{
+  boot.kernelParams = [ "amdgpu.ppfeaturemask=0xfffd7fff" ];
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="hwmon", ATTR{name}=="amdgpu", ATTR{power1_cap}="186000000", RUN+="${undervoltGpu} %S%p/device"
+  '';
+}

system/media-packages.nix

@@ -23,6 +23,7 @@ in
       gimp
       inkscape
       krita
+      kdePackages.breeze
       kdePackages.kdenlive
       pitivi
       blender-hip

user/firefox.nix

@@ -49,6 +49,11 @@ in
             url = "https://github.com/OhMyGuus/I-Still-Dont-Care-About-Cookies/releases/download/v1.1.4/istilldontcareaboutcookies-1.1.4.xpi";
             hash = "sha256-yt6yRiLTuaK4K/QwgkL9gCVGsSa7ndFOHqZvKqIGZ5U=";
           })
+          (pkgs.fetchFirefoxAddon {
+            name = "github_no_more";
+            url = "https://addons.mozilla.org/firefox/downloads/file/4293306/github_no_more-0.0.1.xpi";
+            hash = "sha256-1vzgo7z4K6aZAVAo5VqihYQi77mZ0rE68xbt7Oqz29s=";
+          })
 
           (pkgs.fetchFirefoxAddon {
             name = "vimium_ff";

user/sway/theme.nix

@@ -48,9 +48,11 @@ lib.mkIf (desktop == "sway") {
         gtk3 = shared;
       }
     );
+
   qt = {
     enable = true;
-    platformTheme.name = "qtct";
+    platformTheme.name = "gtk3";
+    style.name = "qt5ct";
   };
 
   dconf.settings = {