diff -ur xorg-server-1.3.0.0.dfsg/hw/xfree86/os-support/linux/lnx_acpi.c xorg-server-1.3.0.0.dfsg.new/hw/xfree86/os-support/linux/lnx_acpi.c
--- xorg-server-1.3.0.0.dfsg/hw/xfree86/os-support/linux/lnx_acpi.c	2006-11-16 18:01:25.000000000 +0000
+++ xorg-server-1.3.0.0.dfsg.new/hw/xfree86/os-support/linux/lnx_acpi.c	2007-08-26 16:14:34.000000000 +0100
@@ -110,6 +110,8 @@
 		case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
 			break;
 		default:
+			/* If it's not a switch notification, send nothing */
+			return 0;
 			break;
 	}