diff -Nru alsa-ucm-conf-1.2.2/debian/changelog alsa-ucm-conf-1.2.2/debian/changelog
--- alsa-ucm-conf-1.2.2/debian/changelog	2020-08-13 22:18:58.000000000 +0800
+++ alsa-ucm-conf-1.2.2/debian/changelog	2020-08-18 17:39:15.000000000 +0800
@@ -1,3 +1,11 @@
+alsa-ucm-conf (1.2.2-1ubuntu3) groovy; urgency=medium
+
+  * d/p/0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch
+    Add proper stream and jack assignment to Lenovo ThinkStation P620
+    (LP: #1891461)
+
+ -- Kai-Heng Feng <kai.heng.feng@canonical.com>  Tue, 18 Aug 2020 17:39:15 +0800
+
 alsa-ucm-conf (1.2.2-1ubuntu2) groovy; urgency=medium
 
   * d/p/0003-ucm-fix-wrong-If-in-sequence-in-HiFi-dual.conf.patch
diff -Nru alsa-ucm-conf-1.2.2/debian/patches/0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch alsa-ucm-conf-1.2.2/debian/patches/0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch
--- alsa-ucm-conf-1.2.2/debian/patches/0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch	1970-01-01 08:00:00.000000000 +0800
+++ alsa-ucm-conf-1.2.2/debian/patches/0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch	2020-08-18 17:20:12.000000000 +0800
@@ -0,0 +1,79 @@
+From fc489d2a140000eb2b04181dc6c97201376accfc Mon Sep 17 00:00:00 2001
+From: Kai-Heng Feng <kai.heng.feng@canonical.com>
+Date: Thu, 6 Aug 2020 16:54:11 +0800
+Subject: [PATCH] Add support for Lenovo ThinkStation P620 Main Audio
+
+This add support for internal speaker and front headset.
+
+We need two separate configs to let PulseAudio understands they are two
+different profiles, so the headset's port availability won't affect
+speaker's profile availability.
+---
+ ...Lenovo-ThinkStation-P620-Main-Headset.conf | 19 +++++++++++++++++++
+ ...Lenovo-ThinkStation-P620-Main-Speaker.conf |  9 +++++++++
+ .../Lenovo-ThinkStation-P620-Main.conf        | 11 +++++++++++
+ 3 files changed, 39 insertions(+)
+ create mode 100644 ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Headset.conf
+ create mode 100644 ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Speaker.conf
+ create mode 100644 ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main.conf
+
+diff --git a/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Headset.conf b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Headset.conf
+new file mode 100644
+index 0000000..5362c5e
+--- /dev/null
++++ b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Headset.conf
+@@ -0,0 +1,19 @@
++SectionDevice."Headphones" {
++	Comment "Headphones"
++
++	Value {
++		PlaybackPriority 200
++		PlaybackPCM "hw:${CardId},1"
++		JackControl "Headphone - Output Jack"
++	}
++}
++
++SectionDevice."Microphone" {
++	Comment "Microphone"
++
++	Value {
++		CapturePriority 200
++		CapturePCM "hw:${CardId}"
++		JackControl "Mic - Input Jack"
++	}
++}
+diff --git a/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Speaker.conf b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Speaker.conf
+new file mode 100644
+index 0000000..a83a947
+--- /dev/null
++++ b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main-Speaker.conf
+@@ -0,0 +1,9 @@
++SectionDevice."Speaker" {
++	Comment "Speaker"
++
++	Value {
++		PlaybackPriority 100
++		PlaybackPCM "hw:${CardId}"
++		JackControl "Speaker - Output Jack"
++	}
++}
+diff --git a/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main.conf b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main.conf
+new file mode 100644
+index 0000000..ad1bd91
+--- /dev/null
++++ b/ucm2/USB-Audio/Lenovo-ThinkStation-P620-Main.conf
+@@ -0,0 +1,11 @@
++Syntax 2
++Comment "USB-audio on Lenovo ThinkStation P620 Main Audio"
++SectionUseCase."Speaker" {
++	Comment "Internal Speaker"
++	File "Lenovo-ThinkStation-P620-Main-Speaker.conf"
++}
++
++SectionUseCase."Headset" {
++	Comment "Front Headset"
++	File "Lenovo-ThinkStation-P620-Main-Headset.conf"
++}
+-- 
+2.17.1
+
diff -Nru alsa-ucm-conf-1.2.2/debian/patches/series alsa-ucm-conf-1.2.2/debian/patches/series
--- alsa-ucm-conf-1.2.2/debian/patches/series	2020-08-13 22:18:27.000000000 +0800
+++ alsa-ucm-conf-1.2.2/debian/patches/series	2020-08-18 17:19:56.000000000 +0800
@@ -15,3 +15,5 @@
 0015-HDA-Intel-only-bind-the-acp-dmic-to-the-soundcard-wi.patch
 0016-Fix-invalid-Regex-Type-in-various-Condition-blocks.patch
 
+0001-Add-support-for-Lenovo-ThinkStation-P620-Main-Audio.patch
+