diff -Nru livecd-rootfs-2.664.27/debian/changelog livecd-rootfs-2.664.28/debian/changelog
--- livecd-rootfs-2.664.27/debian/changelog	2021-08-04 15:32:37.000000000 +0000
+++ livecd-rootfs-2.664.28/debian/changelog	2021-08-16 11:02:23.000000000 +0000
@@ -1,3 +1,15 @@
+livecd-rootfs (2.664.28) focal; urgency=medium
+
+  [ Brian Murray ]
+  * Make sure we're using the 'classic' branch for the intel-iot gadget.
+    (LP: #1938338)
+
+  [ Łukasz 'sil2100' Zemczak ]
+  * Add support for passing SUBPROJECT to classic ubuntu-image calls. This
+    should fix running desktop-preinstalled builds. (LP: #1938338)
+
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Mon, 16 Aug 2021 13:02:23 +0200
+
 livecd-rootfs (2.664.27) focal; urgency=medium
 
   * And whoops, we missed adding ARCH in the SUBARCH ubuntu-image handling for
diff -Nru livecd-rootfs-2.664.27/live-build/auto/config livecd-rootfs-2.664.28/live-build/auto/config
--- livecd-rootfs-2.664.27/live-build/auto/config	2021-08-04 15:32:32.000000000 +0000
+++ livecd-rootfs-2.664.28/live-build/auto/config	2021-08-16 11:02:19.000000000 +0000
@@ -440,9 +440,11 @@
 					;;
 				intel-iot)
 					MODEL=pc
+					BRANCH=classic
 					;;
 			esac
 
+			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${SUBPROJECT:+ --subproject \"$SUBPROJECT\"}"
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${PROPOSED:+ --with-proposed}"
 			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS${EXTRA_PPAS:+ --extra-ppas \"$EXTRA_PPAS\"}"