On Lubuntu and Xubuntu, only use the generic kernel on amd64 and i386.

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (2.62) UNRELEASED; urgency=low
+
+  * On Lubuntu and Xubuntu, only use the generic kernel on amd64 and i386.
+
+ -- Colin Watson <cjwatson@ubuntu.com>  Tue, 20 Mar 2012 17:52:09 +0000
+
 livecd-rootfs (2.61) precise; urgency=low
 
   [ Colin Watson ]

live-build/auto/config

@@ -146,7 +146,9 @@ case $PROJECT in
 		add_package install xterm
 		LIVE_TASK='xubuntu-live'
 		COMPONENTS='main restricted universe multiverse'
-		KERNEL_FLAVOURS=generic
+		case $ARCH in
+			amd64|i386)	KERNEL_FLAVOURS=generic ;;
+		esac
 		;;
 
 	ubuntu-netbook)
@@ -164,7 +166,9 @@ case $PROJECT in
 		add_task install minimal standard lubuntu-desktop
 		LIVE_TASK='lubuntu-live'
 		COMPONENTS='main restricted universe multiverse'
-		KERNEL_FLAVOURS=generic
+		case $ARCH in
+			amd64|i386)	KERNEL_FLAVOURS=generic ;;
+		esac
 
 		# The Lubuntu STRUCTURE file has "feature
 		# no-follow-recommends".  Mirror this.