feat: disable jack and configure pipewire for low-latency audio

DaRacci · Oct 13, 2024 · 653e212 · 653e212
1 parent 1ff9742
commit 653e212
Showing 1 changed file with 41 additions and 1 deletion.
diff --git a/modules/nixos/shared/core.nix b/modules/nixos/shared/core.nix
@@ -39,8 +39,48 @@ in
         alsa.enable = true;
         alsa.support32Bit = true;
         pulse.enable = true;
-        jack.enable = true;
+        jack.enable = false;
+        extraConfig.pipewire."92-low-latency" = {
+          "context.properties" = {
+            "default.clock.rate" = 44100;
+            "default.clock.quantum" = 512;
+            "default.clock.min-quantum" = 512;
+            "default.clock.max-quantum" = 512;
+          };
+        };
       };
+
+      services.udev.extraRules = ''
+        KERNEL=="rtc0", GROUP="audio"
+        KERNEL=="hpet", GROUP="audio"
+      '';
+
+      security.pam.loginLimits = [
+        {
+          domain = "@audio";
+          item = "memlock";
+          type = "-";
+          value = "unlimited";
+        }
+        {
+          domain = "@audio";
+          item = "rtprio";
+          type = "-";
+          value = "99";
+        }
+        {
+          domain = "@audio";
+          item = "nofile";
+          type = "soft";
+          value = "99999";
+        }
+        {
+          domain = "@audio";
+          item = "nofile";
+          type = "hard";
+          value = "524288";
+        }
+      ];
     })
     (mkIf cfg.bluetooth.enable {
       hardware.bluetooth.enable = true;