Use lowlatency for Ubuntu Studio amd64, since lowlatency-pae is

i386-specific (LP: #959011).

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.61) UNRELEASED; urgency=low
+
+  * Use lowlatency for Ubuntu Studio amd64, since lowlatency-pae is
+    i386-specific (LP: #959011).
+
+ -- Colin Watson <cjwatson@ubuntu.com>  Mon, 19 Mar 2012 12:43:28 +0000
+
 livecd-rootfs (2.60) precise; urgency=low
 
   * Use generic (non-PAE) kernel for Xubuntu (LP: #955009).

live-build/auto/config

@@ -173,7 +173,10 @@ case $PROJECT in
 	ubuntustudio-dvd)
 		add_task install ubuntustudio-desktop ubuntustudio-generation ubuntustudio-recording ubuntustudio-font-meta ubuntustudio-graphics ubuntustudio-audio-plugins ubuntustudio-video
 		COMPONENTS='main restricted universe multiverse'
-		KERNEL_FLAVOURS=lowlatency-pae
+		case $ARCH in
+			i386)	KERNEL_FLAVOURS=lowlatency-pae ;;
+			amd64)	KERNEL_FLAVOURS=lowlatency ;;
+		esac
 		;;
 
 	base)