diff -Nru pulseaudio-11.1/debian/changelog pulseaudio-11.1/debian/changelog
--- pulseaudio-11.1/debian/changelog	2017-11-01 16:13:53.000000000 +0800
+++ pulseaudio-11.1/debian/changelog	2017-12-14 13:28:31.000000000 +0800
@@ -1,3 +1,10 @@
+pulseaudio (1:11.1-1ubuntu2) bionic; urgency=medium
+
+  * Add 0800-fix-lp1720684.patch to ensure the default Bluetooth audio
+    profile is the higher quality A2DP rather than HSP/HFP. (LP: #1720684)
+
+ -- Daniel van Vugt <daniel.van.vugt@canonical.com>  Thu, 14 Dec 2017 13:28:31 +0800
+
 pulseaudio (1:11.1-1ubuntu1) bionic; urgency=medium
 
   * Drop upstreamed patches:
diff -Nru pulseaudio-11.1/debian/patches/0800-fix-lp1720684.patch pulseaudio-11.1/debian/patches/0800-fix-lp1720684.patch
--- pulseaudio-11.1/debian/patches/0800-fix-lp1720684.patch	1970-01-01 08:00:00.000000000 +0800
+++ pulseaudio-11.1/debian/patches/0800-fix-lp1720684.patch	2017-12-14 13:26:46.000000000 +0800
@@ -0,0 +1,58 @@
+Description: bluetooth: set better priorities for profiles
+ Since HSP had higher priority than A2DP, the default profile when
+ connecting a new headset was HSP. To me it makes more sense to default
+ to high-quality output. We already have some automatic policies to
+ switch to HSP when it's needed.
+ .
+ I also made the A2DP source and HSP/HFP gateway profiles have lower
+ priority than the A2DP sink and HSP headset profiles. The A2DP source
+ and HSP/HFP gateway profiles should only be activated if the remote
+ device initiates audio streaming, so it makes sense to have lower
+ priority for those profiles.
+Author: Tanu Kaskinen <tanuk@iki.fi>
+Acked-by: Daniel van Vugt <daniel.van.vugt@canonical.com>
+Origin: upstream, https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules?id=85daab2725c8964d5e3d07089c4056435022d12e
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1720684
+Bug: https://bugs.freedesktop.org/show_bug.cgi?id=103058
+Last-Update: 2017-12-14
+
+Index: pulseaudio/src/modules/bluetooth/module-bluez5-device.c
+===================================================================
+--- pulseaudio.orig/src/modules/bluetooth/module-bluez5-device.c
++++ pulseaudio/src/modules/bluetooth/module-bluez5-device.c
+@@ -1851,7 +1851,7 @@ static pa_card_profile *create_card_prof
+     switch (profile) {
+     case PA_BLUETOOTH_PROFILE_A2DP_SINK:
+         cp = pa_card_profile_new(name, _("High Fidelity Playback (A2DP Sink)"), sizeof(pa_bluetooth_profile_t));
+-        cp->priority = 10;
++        cp->priority = 40;
+         cp->n_sinks = 1;
+         cp->n_sources = 0;
+         cp->max_sink_channels = 2;
+@@ -1863,7 +1863,7 @@ static pa_card_profile *create_card_prof
+ 
+     case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
+         cp = pa_card_profile_new(name, _("High Fidelity Capture (A2DP Source)"), sizeof(pa_bluetooth_profile_t));
+-        cp->priority = 10;
++        cp->priority = 20;
+         cp->n_sinks = 0;
+         cp->n_sources = 1;
+         cp->max_sink_channels = 0;
+@@ -1875,7 +1875,7 @@ static pa_card_profile *create_card_prof
+ 
+     case PA_BLUETOOTH_PROFILE_HEADSET_HEAD_UNIT:
+         cp = pa_card_profile_new(name, _("Headset Head Unit (HSP/HFP)"), sizeof(pa_bluetooth_profile_t));
+-        cp->priority = 20;
++        cp->priority = 30;
+         cp->n_sinks = 1;
+         cp->n_sources = 1;
+         cp->max_sink_channels = 1;
+@@ -1888,7 +1888,7 @@ static pa_card_profile *create_card_prof
+ 
+     case PA_BLUETOOTH_PROFILE_HEADSET_AUDIO_GATEWAY:
+         cp = pa_card_profile_new(name, _("Headset Audio Gateway (HSP/HFP)"), sizeof(pa_bluetooth_profile_t));
+-        cp->priority = 20;
++        cp->priority = 10;
+         cp->n_sinks = 1;
+         cp->n_sources = 1;
+         cp->max_sink_channels = 1;
diff -Nru pulseaudio-11.1/debian/patches/series pulseaudio-11.1/debian/patches/series
--- pulseaudio-11.1/debian/patches/series	2017-11-01 16:13:53.000000000 +0800
+++ pulseaudio-11.1/debian/patches/series	2017-12-14 13:26:26.000000000 +0800
@@ -16,3 +16,5 @@
 # Ubuntu Snappy
 0700-modules-add-snappy-policy-module.patch
 
+# Bug fixes backported from PulseAudio 12
+0800-fix-lp1720684.patch