diff --git a/debian/changelog b/debian/changelog
index 87bf0222..57b5c6cc 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -12,6 +12,11 @@ livecd-rootfs (2.721) UNRELEASED; urgency=medium
   [ Michael Hudson-Doyle ]
   * remove the workaround for bug #1893818
 
+  [ Łukasz 'sil2100' Zemczak ]
+  * Start using the ubuntu-server-raspi seeds for preinstalled raspi server
+    images, similarly to how it's done for desktop-preinstalled images.
+  * Drop the unused imx6 support.
+
  -- Dimitri John Ledkov <xnox@ubuntu.com>  Wed, 05 May 2021 11:42:27 +0100
 
 livecd-rootfs (2.720) impish; urgency=medium
diff --git a/live-build/auto/config b/live-build/auto/config
index 801d3d0f..0017e799 100755
--- a/live-build/auto/config
+++ b/live-build/auto/config
@@ -281,7 +281,7 @@ if [ -z "${IMAGEFORMAT:-}" ]; then
 	case $PROJECT:${SUBPROJECT:-} in
 		ubuntu-cpc:*|ubuntu:desktop-preinstalled)
 			case $SUBARCH in
-				raspi|imx6)
+				raspi)
 					IMAGEFORMAT=ubuntu-image
 					;;
 				*)
@@ -352,8 +352,6 @@ case $IMAGEFORMAT in
 				MODEL=pi3-arm64 ;;
 			armhf+cm3)
 				MODEL=cm3 ;;
-			armhf+imx6)
-				MODEL=nitrogen6x ;;
 			*)
 				echo "Model $ARCH+${SUBARCH:-} unknown to livecd-rootfs" >&2
 				exit 1
@@ -831,12 +829,15 @@ case $PROJECT in
 
 		BINARY_REMOVE_LINUX=false
 		OPTS="${OPTS:+$OPTS }--initramfs=none"
-		case $ARCH in
-			armhf)
+		case "$ARCH+${SUBARCH:-}" in
+			*+raspi)
+				add_task install ubuntu-server-raspi
+				;;
+			armhf*)
 				KERNEL_FLAVOURS=generic-lpae
 				add_package install flash-kernel
 				;;
-			arm64)
+			arm64*)
 				add_package install flash-kernel
 				if [ "${SUBARCH:-}" = "generic" ]; then
 					KERNEL_FLAVOURS=generic
@@ -847,7 +848,7 @@ case $PROJECT in
 					KERNEL_FLAVOURS=generic
 				fi
 				;;
-			riscv64)
+			riscv64*)
 				if [ -n "$SUBARCH" ]; then
 					KERNEL_FLAVOURS=generic
 				fi
@@ -965,24 +966,16 @@ case $PROJECT in
 		;;
 esac
 
-case $ARCH in
-	armhf|arm64)
-		KERNEL_FLAVOURS="${SUBARCH:-$KERNEL_FLAVOURS}"
-		case $SUBARCH in
-			raspi)
-				# Generic Raspberry Pi images
-				COMPONENTS='main restricted universe multiverse'
-				add_package install linux-firmware-raspi2 pi-bluetooth u-boot-rpi flash-kernel u-boot-tools wpasupplicant ubuntu-raspi-settings
-				BINARY_REMOVE_LINUX=false
-				;;
-			imx6)
-				COMPONENTS='main restricted universe multiverse'
-				KERNEL_FLAVOURS=generic
-				add_package install flash-kernel u-boot-tools wpasupplicant
-				BINARY_REMOVE_LINUX=false
-				;;
-
-		esac
+case "$ARCH+${SUBARCH:-}" in
+	arm*+raspi)
+		# Common configuration for all Raspberry Pi image variants (server,
+		# desktop etc.)
+		KERNEL_FLAVOURS="$SUBARCH"
+		COMPONENTS='main restricted universe multiverse'
+		# Most Pi-specific package installation is handled via the seeds in the
+		# per-project/subproject cases above
+		add_package install linux-firmware-raspi2 pi-bluetooth u-boot-rpi u-boot-tool
+		BINARY_REMOVE_LINUX=false
 		;;
 esac