[system] audio: let the session user reach Maono mic controls

release/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+### Added
+- `ryoku-desktop` ships `system/hardware/audio/70-ryoku-maono.rules` to
+  `/usr/lib/udev/rules.d`, so the vendor HID node on Maono USB mics is reachable
+  by the active-session user. See the system/hardware changelog.
+
 ### Fixed
 - `ryoku-desktop` no longer ships the PipeWire `switch-on-connect` drop-in
   (`ryoku/apps/pipewire/`): it broke the saved default audio device on every

release/packages/ryoku-desktop/PKGBUILD

@@ -492,6 +492,11 @@ package() {
   install -Dm644 "$_repo/system/hardware/ddc/60-ryoku-i2c.rules" \
     "$pkgdir/usr/lib/udev/rules.d/60-ryoku-i2c.rules"
 
+  # Maono USB mics: their control features sit on a vendor HID page the kernel
+  # leaves root-only, so uaccess is what lets a control app reach them at all.
+  install -Dm644 "$_repo/system/hardware/audio/70-ryoku-maono.rules" \
+    "$pkgdir/usr/lib/udev/rules.d/70-ryoku-maono.rules"
+
   # Bluetooth tuning: bluez owns /etc/bluetooth/main.conf and BlueZ has no
   # drop-in dir, so Ryoku cannot ship a copy here (pacman file conflict). The
   # ryoku-bluetooth-tune helper (installed by the hardware glob above) sets the

system/hardware/CHANGELOG.md

@@ -3,6 +3,15 @@
 ## Unreleased
 
 ### Added
+- `audio/70-ryoku-maono.rules`: reach the control features on Maono USB mics.
+  The PD400X and its siblings put gain, EQ, compressor, limiter and the monitor
+  mix behind a vendor-defined HID page (usage page `0xFF01`) instead of the audio
+  interface, and the kernel leaves both `/dev/hidraw*` and the raw USB node
+  root-owned, so a control app running as the user cannot open either one. The
+  rule grants the active-session user access (`uaccess`, no group setup), the
+  same pattern as `60-ryoku-i2c.rules`. Shipped to `/usr/lib/udev` by
+  `ryoku-desktop`. The four standard USB-audio controls (mic gain and mute,
+  headphone level and mute) already worked without it.
 - `leds/ryoku-leds`: `RYOKU_LEDS_DISABLE=1` turns the OpenRGB accent sync off.
   `ryoku-leds apply` runs from Hyprland autostart and again from the shell daemon
   on every wallpaper change, and there was no off switch short of forking the

system/hardware/audio/70-ryoku-maono.rules

@@ -0,0 +1,6 @@
+# Maono USB mics (PD400X, DM30, ...) expose gain, EQ, compressor, limiter and
+# the monitor mix on a vendor-defined HID page rather than the audio interface.
+# The kernel leaves that node root-only, so grant the active-session user access
+# (uaccess, no group setup) and any control app can reach it.
+KERNEL=="hidraw*", ATTRS{idVendor}=="352f", TAG+="uaccess"
+SUBSYSTEM=="usb", ATTR{idVendor}=="352f", TAG+="uaccess"