diff --git a/xorg-x11-server.spec b/xorg-x11-server.spec
index 1779223..88cc52c 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:   1.6.3
-Release:   2%{?dist}
+Release:   3%{?dist}
 URL:       http://www.x.org
 License:   MIT
 Group:     User Interface/X
@@ -113,6 +113,8 @@ Patch6047: xserver-1.6.2-vboxvideo.patch
 
 # 501601, upstream, nominated for 1.6.4
 Patch6048: xserver-1.6.3-sync-conditions.patch
+# 501601, part 2.
+Patch6049: xserver-1.6.99-dpms.patch
 
 %define moduledir	%{_libdir}/xorg/modules
 %define drimoduledir	%{_libdir}/dri
@@ -530,6 +532,9 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Mon Aug 17 2009 Peter Hutterer <peter.hutterer@redhat.com> 1.6.3-3
+- xserver-1.6.99-dpms.patch: don't reset last event time on DPMS changes.
+
 * Thu Aug 13 2009 Peter Hutterer <peter.hutterer@redhat.com> 1.6.3-2
 - xserver-1.6.3-sync-conditions.patch: Fix conditions when checking
   negative transition triggers in the sync extension (#501601)
diff --git a/xserver-1.6.99-dpms.patch b/xserver-1.6.99-dpms.patch
new file mode 100644
index 0000000..aaa769a
--- /dev/null
+++ b/xserver-1.6.99-dpms.patch
@@ -0,0 +1,47 @@
+From c1d901d723c3bee523736eacc15b44a7dff484fe Mon Sep 17 00:00:00 2001
+From: Richard Hughes <richard@hughsie.com>
+Date: Fri, 14 Aug 2009 11:44:35 +0100
+Subject: [PATCH] Don't reset the lastDeviceEventTime when doing DPMS actions
+
+When we change the DPMS mode, don't play games with the last event time as
+this breaks applications using IDLETIME to turn the backlight off after a
+preset time.
+
+This patch fixes gnome-power-manager and xfce-power-manager
+
+Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
+---
+ Xext/dpms.c |   17 ++++-------------
+ 1 files changed, 4 insertions(+), 13 deletions(-)
+
+diff --git a/Xext/dpms.c b/Xext/dpms.c
+index 21ba923..df63a8b 100644
+--- a/Xext/dpms.c
++++ b/Xext/dpms.c
+@@ -177,19 +177,10 @@ ProcDPMSForceLevel(ClientPtr client)
+     if (!DPMSEnabled)
+ 	return BadMatch;
+ 
+-    if (stuff->level == DPMSModeOn) {
+-      lastDeviceEventTime.milliseconds =
+-          GetTimeInMillis();
+-    } else if (stuff->level == DPMSModeStandby) {
+-      lastDeviceEventTime.milliseconds =
+-          GetTimeInMillis() -  DPMSStandbyTime;
+-    } else if (stuff->level == DPMSModeSuspend) {
+-      lastDeviceEventTime.milliseconds =
+-          GetTimeInMillis() -  DPMSSuspendTime;
+-    } else if (stuff->level == DPMSModeOff) {
+-      lastDeviceEventTime.milliseconds =
+-          GetTimeInMillis() -  DPMSOffTime;
+-    } else {
++    if (stuff->level != DPMSModeOn &&
++        stuff->level != DPMSModeStandby &&
++        stuff->level != DPMSModeSuspend &&
++        stuff->level != DPMSModeOff) {
+ 	client->errorValue = stuff->level;
+ 	return BadValue;
+     }
+-- 
+1.6.3.rc1.2.g0164.dirty
+