Commit `461446394e44`

Vincent Demeester <vincent@sbr.pm>

2026-02-16 10:22:25

feat(audio): added G14 2022 audio fix for okinawa

Fixed ASUS ROG Zephyrus G14 (GA402RJ) audio issues where hardware amplifiers (AMP1/AMP2) did not follow system volume controls, causing subwoofers to remain loud regardless of volume slider position. Changes: - Enabled ALSA soft-mixer in WirePlumber for proper hardware control - Added systemd service to initialize amplifier levels on boot/resume - Added alsa-utils package for hardware mixer management The fix addresses common G14 Linux audio problems including poor sound quality, inconsistent volume, and lack of subwoofer control.

main

1 parent 25ed845

Changed files (2)

systems

common

services

pipewire.nix

okinawa

extra.nix

@@ -22,6 +22,23 @@
             ["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]"
           }
         '')
+        # ALSA soft-mixer support for proper hardware mixer control
+        # Fixes issues with ASUS laptops where hardware amplifiers aren't
+        # properly controlled by PipeWire (e.g., G14 AMP1/AMP2)
+        (pkgs.writeTextDir "share/wireplumber/wireplumber.conf.d/99-alsasoftvol.conf" ''
+          monitor.alsa.rules = [
+            {
+              matches = [
+                { device.name = "~alsa_card.*" }
+              ]
+              actions = {
+                update-props = {
+                  api.alsa.soft-mixer = true
+                }
+              }
+            }
+          ]
+        '')
       ];
     };
   };

@@ -201,6 +201,9 @@
     # Development
     python3
     uv
+
+    # Audio utilities for G14 fix
+    alsa-utils # amixer, alsactl for AMP control
   ];
 
   # Prometheus node exporter (configured in common module)
@@ -212,4 +215,50 @@
     HandleLidSwitchExternalPower = "ignore";
     HandleLidSwitchDocked = "ignore";
   };
+
+  # ASUS G14 2022 Audio Fix
+  # Fixes subwoofer/speaker volume sync issues where hardware amplifiers
+  # (AMP1/AMP2) don't follow system volume controls
+  systemd.services.asus-g14-audio-fix = {
+    description = "ASUS G14 Audio Amplifier Initialization";
+    after = [
+      "sound.target"
+      "alsa-restore.service"
+    ];
+    wantedBy = [
+      "multi-user.target"
+      "post-resume.target"
+    ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+      ExecStart = pkgs.writeShellScript "g14-audio-init" ''
+        # Find the correct card (Ryzen HD Audio Controller)
+        CARD=$(${pkgs.alsa-utils}/bin/aplay -l | grep "Ryzen HD Audio Controller" | head -1 | sed 's/card \([0-9]\).*/\1/')
+
+        if [ -z "$CARD" ]; then
+          echo "ERROR: Could not find Ryzen HD Audio Controller card"
+          exit 1
+        fi
+
+        echo "Initializing G14 audio on card $CARD"
+
+        # Set Master volume
+        ${pkgs.alsa-utils}/bin/amixer -c "$CARD" sset Master 80% unmute || true
+
+        # Set AMP1 Speaker (subwoofer control)
+        ${pkgs.alsa-utils}/bin/amixer -c "$CARD" sset 'AMP1 Speaker' 100% unmute || true
+
+        # Set AMP2 Speaker (subwoofer control)
+        ${pkgs.alsa-utils}/bin/amixer -c "$CARD" sset 'AMP2 Speaker' 100% unmute || true
+
+        # Additional common controls
+        ${pkgs.alsa-utils}/bin/amixer -c "$CARD" sset Speaker 100% unmute || true
+        ${pkgs.alsa-utils}/bin/amixer -c "$CARD" sset Headphone 80% unmute || true
+
+        echo "G14 audio initialization complete"
+      '';
+    };
+  };
 }

Commit 461446394e44

Commit `461446394e44`