diff --git a/Runner/config/pkg_command_map.conf b/Runner/config/pkg_command_map.conf
index 4beb2afa..6cdd606b 100755
--- a/Runner/config/pkg_command_map.conf
+++ b/Runner/config/pkg_command_map.conf
@@ -216,35 +216,91 @@ ubuntu:package-set:graphics=kgsl-dkms adreno-common adreno-gles1 adreno-gles2 ad
 # ---------------------------------------------------------------------------
 # Audio validation package recovery.
 #
-# Debian Audio tests use the upstream base Audio stack by default.
+# Debian and Ubuntu Audio tests use their distro-provided base Audio stack.
+#
 # Qualcomm AudioReach packages are installed only when --overlay is explicitly
 # requested.
 #
+# Ubuntu uses the apt sources already configured by the distro image. Audio
+# package preparation must not add, replace, or rewrite Ubuntu apt sources.
+#
 # No rpm, opkg, qcom-distro, or generic provider package-set mapping is
-# provided. Yocto and other embedded images therefore continue using their
-# image-provided Audio stack without package recovery.
+# provided. Yocto and other embedded images continue using their image-provided
+# Audio stack without package recovery.
+# ---------------------------------------------------------------------------
+ 
+# ---------------------------------------------------------------------------
+# Debian base Audio stack.
+# ---------------------------------------------------------------------------
+ 
+debian:package-set:audio-base=alsa-utils pipewire-bin wireplumber pulseaudio-utils curl wget ca-certificates tar gzip
+ 
+# ---------------------------------------------------------------------------
+# Ubuntu base Audio stack.
+#
+# pipewire:
+#   PipeWire daemon and service files.
+#
+# pipewire-bin:
+#   pw-play, pw-record, pw-cli and other PipeWire command-line tools.
+#
+# pipewire-audio:
+#   Recommended Ubuntu PipeWire audio integration, including ALSA and
+#   PulseAudio compatibility components.
+#
+# wireplumber:
+#   PipeWire session and policy manager providing wpctl.
+#
+# pulseaudio-utils:
+#   pactl, paplay and parecord compatibility commands.
+#
+# curl, wget, ca-certificates, tar and gzip:
+#   Required by AudioPlayback to download and extract AudioClips.tar.gz.
 # ---------------------------------------------------------------------------
  
-# Base Debian Audio stack.
-debian:package-set:audio-base=alsa-utils pipewire-bin wireplumber pulseaudio-utils
+ubuntu:package-set:audio-base=alsa-utils alsa-ucm-conf curl ca-certificates tar gzip
  
+# ---------------------------------------------------------------------------
 # Debian Qualcomm AudioReach overlay stack.
 #
-# This package set is complete by itself because overlay mode checks only
-# "audio"; it does not check "audio-base" first.
-debian:package-set:audio=alsa-utils pipewire-bin wireplumber pulseaudio-utils audioreach-pipewire-plugin audioreach-kernel-dkms audioreach-config
+# The overlay package set must be complete by itself because --overlay checks
+# the "audio" package set directly; it does not install "audio-base" first.
+# ---------------------------------------------------------------------------
+ 
+debian:package-set:audio=alsa-utils pipewire-bin wireplumber pulseaudio-utils curl ca-certificates tar gzip audioreach-pipewire-plugin audioreach-kernel-dkms audioreach-config
+ 
+# ---------------------------------------------------------------------------
+# Ubuntu Qualcomm AudioReach overlay stack.
+#
+# Ubuntu uses the existing distro-configured apt sources. Do not configure a
+# Debian, qli, or qli-staging source from the Audio test.
+#
+# This package set includes the complete Ubuntu base Audio stack because
+# --overlay checks only the "audio" package set.
+# ---------------------------------------------------------------------------
+ 
+ubuntu:package-set:audio=alsa-utils pipewire pipewire-bin pipewire-audio wireplumber pulseaudio-utils curl wget ca-certificates tar gzip audioreach-pipewire-plugin audioreach-kernel-dkms audioreach-config
  
+# ---------------------------------------------------------------------------
 # Command recovery used by check_dependencies()/pkg_ensure_command().
+#
+# These apt-provider mappings apply to Debian and Ubuntu.
+# ---------------------------------------------------------------------------
+ 
 apt:aplay=alsa-utils
 apt:arecord=alsa-utils
 apt:amixer=alsa-utils
 apt:alsaucm=alsa-utils
 apt:wpctl=wireplumber
+apt:pipewire=pipewire
 apt:pw-play=pipewire-bin
 apt:pw-record=pipewire-bin
 apt:pactl=pulseaudio-utils
 apt:paplay=pulseaudio-utils
 apt:parecord=pulseaudio-utils
+apt:curl=curl
+apt:wget=wget
+apt:tar=tar
 
 # ---------------------------------------------------------------------------
 # Qualcomm Sensors runtime and test packages.
diff --git a/Runner/utils/audio_common.sh b/Runner/utils/audio_common.sh
index 21b72630..ceab784f 100755
--- a/Runner/utils/audio_common.sh
+++ b/Runner/utils/audio_common.sh
@@ -4204,8 +4204,10 @@ audio_prepare_test_packages() {
       ;;
   esac
  
-  # Resolve the operating-system ID without making the package-provider
-  # library mandatory on native embedded images.
+  ###########################################################################
+  # Platform detection
+  ###########################################################################
+ 
   if command -v pkg_detect_os_id >/dev/null 2>&1; then
     atp_os_id="$(
       pkg_detect_os_id 2>/dev/null ||
@@ -4227,7 +4229,7 @@ audio_prepare_test_packages() {
       log_info "Native image detected; Audio package preparation is not required"
       return 0
       ;;
-    debian)
+    debian|ubuntu)
       ;;
     *)
       log_info "Audio package preparation is not enabled for os=$atp_os_id"
@@ -4235,15 +4237,47 @@ audio_prepare_test_packages() {
       ;;
   esac
  
-  # Debian package preparation must run before the test is re-executed as the
-  # unprivileged Audio user.
+  ###########################################################################
+  # Root requirement
+  ###########################################################################
+ 
   if [ "$(id -u 2>/dev/null || echo 1)" -ne 0 ]; then
-    log_fail "Debian Audio package preparation must run as root"
+    log_fail "Audio package preparation must run as root for os=$atp_os_id"
     return 1
   fi
  
   ###########################################################################
-  # Debian base mode
+  # Ubuntu package preparation
+  ###########################################################################
+ 
+  if [ "$atp_os_id" = "ubuntu" ]; then
+    if [ "$atp_overlay_requested" -eq 1 ]; then
+      log_fail "Ubuntu AudioReach overlay support is still in progress"
+      log_info "Use the Ubuntu native ALSA/UCM path without --overlay"
+      log_info "No AudioReach packages were installed"
+      log_info "No Ubuntu apt source files were added or modified"
+      return 1
+    fi
+ 
+    if ! command -v pkg_ensure_required_package_set_present \
+        >/dev/null 2>&1; then
+      log_fail "Required package-set helper is unavailable"
+      return 1
+    fi
+ 
+    log_info "Preparing native Ubuntu ALSA/UCM Audio packages"
+ 
+    if ! pkg_ensure_required_package_set_present audio-base; then
+      log_fail "Failed to ensure Ubuntu native Audio package set"
+      return 1
+    fi
+ 
+    log_pass "Ubuntu native ALSA/UCM Audio package set is ready"
+    return 0
+  fi
+ 
+  ###########################################################################
+  # Debian base package preparation
   ###########################################################################
  
   if [ "$atp_overlay_requested" -eq 0 ]; then
@@ -4253,6 +4287,8 @@ audio_prepare_test_packages() {
       return 1
     fi
  
+    log_info "Preparing Debian base Audio packages"
+ 
     if ! pkg_ensure_required_package_set_present audio-base; then
       log_fail "Failed to ensure Debian base Audio package set"
       return 1
@@ -4263,7 +4299,7 @@ audio_prepare_test_packages() {
   fi
  
   ###########################################################################
-  # Debian AudioReach overlay mode
+  # Debian Qualcomm AudioReach overlay package preparation
   ###########################################################################
  
   if ! command -v pkg_ensure_optional_package_set_present \
@@ -4278,9 +4314,12 @@ audio_prepare_test_packages() {
     return 1
   fi
  
-  # Capture AudioReach package versions before package preparation. These
-  # values let us distinguish an already-ready target from an install or
-  # upgrade performed during this invocation.
+  log_info "Preparing Debian Qualcomm AudioReach overlay packages"
+ 
+  ###########################################################################
+  # Capture AudioReach package state before preparation
+  ###########################################################################
+ 
   atp_before_plugin="$(
     pkg_installed_package_version \
       audioreach-pipewire-plugin 2>/dev/null ||
@@ -4299,19 +4338,26 @@ audio_prepare_test_packages() {
       true
   )"
  
-  # The optional package provider intentionally requires the literal
-  # --overlay argument. Passing only the internal value "1" makes the provider
-  # treat the request as base mode.
+  ###########################################################################
+  # Ensure the Debian AudioReach package set
+  ###########################################################################
+ 
+  # The optional package provider determines overlay mode from the arguments.
+  # Keep --overlay last so it cannot be overridden by an earlier base option.
   if ! pkg_ensure_optional_package_set_present \
       audio \
       qli-staging \
       auto \
-      --overlay \
-      "$@"; then
+      "$@" \
+      --overlay; then
     log_fail "Failed to ensure Debian AudioReach package set"
     return 1
   fi
  
+  ###########################################################################
+  # Capture AudioReach package state after preparation
+  ###########################################################################
+ 
   atp_after_plugin="$(
     pkg_installed_package_version \
       audioreach-pipewire-plugin 2>/dev/null ||
@@ -4330,6 +4376,10 @@ audio_prepare_test_packages() {
       true
   )"
  
+  ###########################################################################
+  # Detect AudioReach package changes
+  ###########################################################################
+ 
   if [ "$atp_before_plugin" != "$atp_after_plugin" ] ||
      [ "$atp_before_dkms" != "$atp_after_dkms" ] ||
      [ "$atp_before_config" != "$atp_after_config" ]; then
@@ -4353,8 +4403,10 @@ audio_prepare_test_packages() {
     log_info "AudioReach packages were already installed; runtime package state is unchanged"
   fi
  
-  # Do not continue into Audio testing after installing or upgrading the DKMS
-  # package. The active kernel must boot with the newly prepared module.
+  ###########################################################################
+  # Debian AudioReach DKMS reboot requirement
+  ###########################################################################
+ 
   if [ "$atp_before_dkms" != "$atp_after_dkms" ]; then
     AUDIO_OVERLAY_REBOOT_REQUIRED=1
     export AUDIO_OVERLAY_REBOOT_REQUIRED
@@ -4363,9 +4415,11 @@ audio_prepare_test_packages() {
     log_warn "A reboot is required before running AudioReach validation"
     return 2
   fi
-  
-  # Refresh module metadata when package state changed, then install and
-  # activate the repository-owned AudioReach udev rule.
+ 
+  ###########################################################################
+  # Refresh Debian AudioReach device policy
+  ###########################################################################
+ 
   if ! command -v audio_refresh_overlay_devices \
       >/dev/null 2>&1; then
     log_fail "AudioReach device-refresh helper is unavailable"
@@ -4375,7 +4429,7 @@ audio_prepare_test_packages() {
   if ! audio_refresh_overlay_devices \
       "$atp_overlay_requested" \
       "$AUDIO_OVERLAY_PACKAGES_CHANGED"; then
-    log_fail "Failed to refresh AudioReach devices"
+    log_fail "Failed to refresh Debian AudioReach devices"
     return 1
   fi