Add wireplumber rule excluding aloop from default-sink selection

Without this, wireplumber's auto-default algorithm promotes aloop to
default whenever Resolve plays audio (because aloop becomes RUNNING),
and the bridge's "send to default sink" output ends up back in aloop —
renders complete, but monitor audio loops onto itself with nothing
reaching real hardware.

Writes 51-resolve-aloop-no-default.conf with priority.session = 0,
priority.driver = 0, and node.dont-fallback / node.disable-fallback
to cover wireplumber 0.4 and 0.5+. Restart order changed to
wireplumber-first so the rule is in place when the aloop nodes
republish.

Omarchy_resolve_v2.sh

@@ -502,8 +502,10 @@ else
   # Bridge snd-aloop capture → default sink so monitor audio is audible.
   # Without this, Resolve writes to the loopback and the audio goes nowhere
   # (loopback is a black hole until something captures the other side).
-  # The bridge is a PipeWire loopback module loaded from user config; it
-  # tracks the default sink so headphone/HDMI switching keeps working.
+  # The bridge is a PipeWire loopback module loaded from user config; its
+  # playback side uses media.class = Stream/Output/Audio so it follows the
+  # current system default sink — headphone/HDMI/analog switching keeps
+  # working without editing this file.
   ALOOP_BRIDGE_DIR="${HOME}/.config/pipewire/pipewire.conf.d"
   ALOOP_BRIDGE_FILE="${ALOOP_BRIDGE_DIR}/50-resolve-aloop-bridge.conf"
   mkdir -p "${ALOOP_BRIDGE_DIR}"
@@ -532,14 +534,58 @@ context.modules = [
 ]
 EOF
     log "  Wrote ${ALOOP_BRIDGE_FILE} (PipeWire loopback bridge)"
-    # Reload user PipeWire services so the new conf is picked up
-    if systemctl --user is-active --quiet pipewire 2>/dev/null; then
-      systemctl --user restart pipewire pipewire-pulse wireplumber 2>/dev/null || true
-      log "  Reloaded user PipeWire services"
-    fi
   else
     log "  ${ALOOP_BRIDGE_FILE} already in place"
   fi
+
+  # Wireplumber rule: keep aloop OUT of the default-sink rotation.
+  # Wireplumber's auto-default algorithm promotes whichever sink is RUNNING
+  # — and aloop is RUNNING precisely while Resolve plays audio. Without
+  # this rule, aloop becomes default mid-session, the bridge's "send to
+  # default sink" output lands back in aloop, and monitor audio loops onto
+  # itself (renders still complete, but you hear nothing during playback).
+  # Lowering priority + dont-fallback / disable-fallback excludes aloop
+  # from default selection without disabling the device.
+  WPRULE_DIR="${HOME}/.config/wireplumber/wireplumber.conf.d"
+  WPRULE_FILE="${WPRULE_DIR}/51-resolve-aloop-no-default.conf"
+  mkdir -p "${WPRULE_DIR}"
+  if [[ ! -f "${WPRULE_FILE}" ]]; then
+    cat > "${WPRULE_FILE}" <<'EOF'
+# DaVinci Resolve aloop — keep snd-aloop out of the default-sink rotation.
+# Managed by Omarchy_resolve_v2.sh. Without this, wireplumber promotes
+# aloop to default whenever Resolve makes it RUNNING, and the bridge loops
+# audio back into aloop instead of reaching real hardware. Setting both
+# dont-fallback (older) and disable-fallback (newer) covers wireplumber
+# 0.4 and 0.5+.
+monitor.alsa.rules = [
+  {
+    matches = [
+      { node.name = "alsa_output.platform-snd_aloop.0.analog-stereo" }
+      { node.name = "alsa_input.platform-snd_aloop.0.analog-stereo" }
+    ]
+    actions = {
+      update-props = {
+        priority.session      = 0
+        priority.driver       = 0
+        node.dont-fallback    = true
+        node.disable-fallback = true
+      }
+    }
+  }
+]
+EOF
+    log "  Wrote ${WPRULE_FILE} (wireplumber default-sink exclusion)"
+  else
+    log "  ${WPRULE_FILE} already in place"
+  fi
+
+  # Reload user PipeWire + wireplumber so the new configs are picked up.
+  # Restart wireplumber FIRST so its monitor reapplies the alsa rule when
+  # pipewire republishes the aloop nodes.
+  if systemctl --user is-active --quiet pipewire 2>/dev/null; then
+    systemctl --user restart wireplumber pipewire pipewire-pulse 2>/dev/null || true
+    log "  Reloaded user wireplumber + PipeWire services"
+  fi
 fi
 
 echo

README.md

@@ -123,11 +123,18 @@ proceeds normally. The script:
 - Writes `/etc/modules-load.d/snd-aloop.conf` so it autoloads at boot
 - Writes a PipeWire loopback bridge at
   `~/.config/pipewire/pipewire.conf.d/50-resolve-aloop-bridge.conf` so
-  monitor audio routes from the loopback's capture side to the system
-  default sink (without it, Resolve renders fine but you hear nothing
-  during playback; headphone/HDMI sink switching keeps working through
-  the bridge)
-- Restarts user PipeWire services so the bridge loads immediately
+  monitor audio routes from the loopback's capture side to the current
+  system default sink (without it, Resolve renders fine but you hear
+  nothing during playback; headphone/HDMI sink switching keeps working
+  through the bridge)
+- Writes a Wireplumber rule at
+  `~/.config/wireplumber/wireplumber.conf.d/51-resolve-aloop-no-default.conf`
+  that excludes the aloop card from default-sink selection — without this,
+  Wireplumber would promote aloop to default whenever Resolve plays audio
+  (because aloop is RUNNING), and the bridge would loop audio back into
+  aloop instead of your real hardware
+- Restarts user Wireplumber + PipeWire services so the configs load
+  immediately
 
 Set `RESOLVE_NO_ALOOP=1` to skip this entirely (useful if you have a
 dedicated audio interface Resolve already uses cleanly).
@@ -255,23 +262,35 @@ clip codec with `ffprobe` — ProRes RAW will hang silently on Linux without
 Apple's ProRes RAW SDK plugins, which is a separate issue from this audio
 fix.
 
-### No audio during playback / monitor sink switches don't work
+### No audio during playback / sink keeps flipping to "Loopback"
 
-The PipeWire loopback bridge at
-`~/.config/pipewire/pipewire.conf.d/50-resolve-aloop-bridge.conf` routes
-the snd-aloop capture side to your default sink. If headphone/HDMI
-switching stops working for Resolve playback, restart user PipeWire
-services:
+If your system default sink keeps switching to "Loopback Analog Stereo"
+the moment Resolve starts playing, the wireplumber exclusion rule isn't
+in effect. Confirm the rule file exists:
 
 ```bash
-systemctl --user restart pipewire pipewire-pulse wireplumber
+cat ~/.config/wireplumber/wireplumber.conf.d/51-resolve-aloop-no-default.conf
 ```
 
-To remove the bridge entirely:
+If absent, re-run the installer or pin your real sink manually:
+
+```bash
+pactl set-default-sink <your-real-sink-name>      # e.g. alsa_output.pci-0000_01_00.1.hdmi-stereo
+```
+
+If headphone/HDMI switching stops working for Resolve playback, restart
+the user audio stack (wireplumber first):
+
+```bash
+systemctl --user restart wireplumber pipewire pipewire-pulse
+```
+
+To remove the bridge + rule entirely:
 
 ```bash
 rm ~/.config/pipewire/pipewire.conf.d/50-resolve-aloop-bridge.conf
-systemctl --user restart pipewire pipewire-pulse wireplumber
+rm ~/.config/wireplumber/wireplumber.conf.d/51-resolve-aloop-no-default.conf
+systemctl --user restart wireplumber pipewire pipewire-pulse
 ```
 
 ### Missing library errors
@@ -327,10 +346,11 @@ sudo rm -f /usr/lib/udev/rules.d/99-BlackmagicDevices.rules
 sudo rm -f /usr/lib/udev/rules.d/99-ResolveKeyboardHID.rules
 sudo rm -f /usr/lib/udev/rules.d/99-DavinciPanel.rules
 
-# Remove the snd-aloop autoload entry + PipeWire bridge (optional)
+# Remove the snd-aloop autoload entry + PipeWire bridge + wireplumber rule
 sudo rm -f /etc/modules-load.d/snd-aloop.conf
 rm -f ~/.config/pipewire/pipewire.conf.d/50-resolve-aloop-bridge.conf
-systemctl --user restart pipewire pipewire-pulse wireplumber
+rm -f ~/.config/wireplumber/wireplumber.conf.d/51-resolve-aloop-no-default.conf
+systemctl --user restart wireplumber pipewire pipewire-pulse
 
 # Remove user data (WARNING: deletes all projects and settings)
 rm -rf ~/.local/share/DaVinciResolve