diff --git a/xorg-x11-server.spec b/xorg-x11-server.spec
index 0d7467d..27b0743 100644
--- a/xorg-x11-server.spec
+++ b/xorg-x11-server.spec
@@ -19,7 +19,7 @@
 Summary:   X.Org X11 X server
 Name:      xorg-x11-server
 Version:   1.5.1
-Release:   6%{?dist}
+Release:   7%{?dist}
 URL:       http://www.x.org
 License:   MIT
 Group:     User Interface/X
@@ -82,6 +82,9 @@ Patch6001: xserver-1.5.0-edid-backport.patch
 # FDO bug 14373 (FIXED), RH bug #460545
 Patch6002: xserver-1.5.0-xkb-core-kbd-map-fix.patch
 
+# force mode debugging on for randr 1.2 drivers
+Patch6003: xserver-1.5.1-mode-debug.patch
+
 %define moduledir	%{_libdir}/xorg/modules
 %define drimoduledir	%{_libdir}/dri
 %define sdkdir		%{_includedir}/xorg
@@ -512,6 +515,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Tue Oct 7 2008 Adam Jackson <ajax@redhat.com> 1.5.1-7
+- xserver-1.5.1-mode-debug.patch: Force mode debugging on.
+
 * Tue Oct 7 2008 Peter Hutterer <peter.hutterer@redhat.com> 1.5.1-6
 - xserver-1.5.0-xkb-core-kbd-map-fix.patch: don't invent groups when mapping
   from xkb to core and back, and squash canonical types into explicit ones on
diff --git a/xserver-1.5.1-mode-debug.patch b/xserver-1.5.1-mode-debug.patch
new file mode 100644
index 0000000..11fe5ad
--- /dev/null
+++ b/xserver-1.5.1-mode-debug.patch
@@ -0,0 +1,26 @@
+From 079910986a1b8f5042e16ee2ba3ad9ed843b67ca Mon Sep 17 00:00:00 2001
+From: Adam Jackson <ajax@redhat.com>
+Date: Tue, 7 Oct 2008 11:09:14 -0400
+Subject: [PATCH] Force ModeDebug on.
+
+---
+ hw/xfree86/modes/xf86Crtc.c |    3 +--
+ 1 files changed, 1 insertions(+), 2 deletions(-)
+
+diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c
+index 9bcf81b..a953c8a 100644
+--- a/hw/xfree86/modes/xf86Crtc.c
++++ b/hw/xfree86/modes/xf86Crtc.c
+@@ -2084,8 +2084,7 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)
+     xf86ProcessOptions (scrn->scrnIndex,
+ 			scrn->options,
+ 			config->options);
+-    config->debug_modes = xf86ReturnOptValBool (config->options,
+-						OPTION_MODEDEBUG, FALSE);
++    config->debug_modes = TRUE;
+ 
+     if (scrn->display->virtualX)
+ 	width = scrn->display->virtualX;
+-- 
+1.6.0.1
+