diff --git a/hw/xfree86/dri/Makefile.am b/hw/xfree86/dri/Makefile.am
index e17cea7fd..3ec30beec 100644
--- a/hw/xfree86/dri/Makefile.am
+++ b/hw/xfree86/dri/Makefile.am
@@ -1,6 +1,11 @@
 libdri_la_LTLIBRARIES = libdri.la
 libdri_la_CFLAGS = -I$(top_srcdir)/hw/xfree86/common \
                    -I$(top_srcdir)/hw/xfree86/os-support \
+                   -I$(top_srcdir)/hw/xfree86/modes \
+                   -I$(top_srcdir)/hw/xfree86/ddc \
+                   -I$(top_srcdir)/hw/xfree86/i2c \
+                   -I$(top_srcdir)/hw/xfree86/parser \
+                   -I$(top_srcdir)/hw/xfree86/ramdac \
                    -I$(top_srcdir)/hw/xfree86/os-support/bus \
                    -I$(top_srcdir)/glx \
                    -I$(top_srcdir)/GL/include \
diff --git a/hw/xfree86/dri/dri.c b/hw/xfree86/dri/dri.c
index 37136590b..1a3e09111 100644
--- a/hw/xfree86/dri/dri.c
+++ b/hw/xfree86/dri/dri.c
@@ -302,6 +302,18 @@ DRIOpenDRMMaster(ScrnInfoPtr pScrn,
     return FALSE;
 }
 
+static void
+DRIClipNotifyAllDrawables(ScreenPtr pScreen);
+
+static void
+dri_crtc_notify(ScreenPtr pScreen)
+{
+    DRIScreenPrivPtr  pDRIPriv = DRI_SCREEN_PRIV(pScreen);
+    DRIClipNotifyAllDrawables(pScreen);
+    xf86_unwrap_crtc_notify(pScreen, pDRIPriv->xf86_crtc_notify);
+    xf86_crtc_notify(pScreen);
+    pDRIPriv->xf86_crtc_notify = xf86_wrap_crtc_notify(pScreen, dri_crtc_notify);
+}
 
 Bool
 DRIScreenInit(ScreenPtr pScreen, DRIInfoPtr pDRIInfo, int *pDRMFD)
@@ -605,6 +617,9 @@ DRIFinishScreenInit(ScreenPtr pScreen)
     pDRIPriv->DestroyWindow             = pScreen->DestroyWindow;
     pScreen->DestroyWindow              = DRIDestroyWindow;
 
+    pDRIPriv->xf86_crtc_notify = xf86_wrap_crtc_notify(pScreen,
+						       dri_crtc_notify);
+						       
     if (pDRIInfo->wrap.CopyWindow) {
 	pDRIPriv->wrap.CopyWindow       = pScreen->CopyWindow;
 	pScreen->CopyWindow             = pDRIInfo->wrap.CopyWindow;
@@ -658,6 +673,9 @@ DRICloseScreen(ScreenPtr pScreen)
 		pScreen->DestroyWindow          = pDRIPriv->DestroyWindow;
 		pDRIPriv->DestroyWindow         = NULL;
 	    }
+
+	    xf86_unwrap_crtc_notify(pScreen, pDRIPriv->xf86_crtc_notify);
+
 	    if (pDRIInfo->wrap.CopyWindow) {
 		pScreen->CopyWindow             = pDRIPriv->wrap.CopyWindow;
 		pDRIPriv->wrap.CopyWindow       = NULL;
@@ -671,6 +689,7 @@ DRICloseScreen(ScreenPtr pScreen)
 		pScrn->AdjustFrame              = pDRIPriv->wrap.AdjustFrame;
 		pDRIPriv->wrap.AdjustFrame      = NULL;
 	    }
+	    
 	    pDRIPriv->wrapped = FALSE;
 	}
 
diff --git a/hw/xfree86/dri/dristruct.h b/hw/xfree86/dri/dristruct.h
index ae970d834..fc929c2f9 100644
--- a/hw/xfree86/dri/dristruct.h
+++ b/hw/xfree86/dri/dristruct.h
@@ -35,6 +35,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define DRI_STRUCT_H
 
 #include "xf86drm.h"
+#include "xf86Crtc.h"
 
 
 #define DRI_DRAWABLE_PRIV_FROM_WINDOW(pWin) ((DRIDrawablePrivPtr) \
@@ -106,6 +107,7 @@ typedef struct _DRIScreenPrivRec
     XF86DRILSAREAPtr    pLSAREA;      /* Mapped pointer to SAREA containing lock */
     int*                pLockRefCount;
     int*                pLockingContext;
+    xf86_crtc_notify_proc_ptr	xf86_crtc_notify;
 } DRIScreenPrivRec, *DRIScreenPrivPtr;
 
 
diff --git a/hw/xfree86/loader/xf86sym.c b/hw/xfree86/loader/xf86sym.c
index f2b7e93ec..234635600 100644
--- a/hw/xfree86/loader/xf86sym.c
+++ b/hw/xfree86/loader/xf86sym.c
@@ -914,6 +914,9 @@ _X_HIDDEN void *xfree86LookupTab[] = {
     SYMFUNC(xf86_hide_cursors)
     SYMFUNC(xf86_cursors_fini)
     SYMFUNC(xf86_crtc_clip_video_helper)
+    SYMFUNC(xf86_wrap_crtc_notify)
+    SYMFUNC(xf86_unwrap_crtc_notify)
+    SYMFUNC(xf86_crtc_notify)
 
     SYMFUNC(xf86DoEDID_DDC1)
     SYMFUNC(xf86DoEDID_DDC2)
diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c
index 251b80073..a71f5c756 100644
--- a/hw/xfree86/modes/xf86Crtc.c
+++ b/hw/xfree86/modes/xf86Crtc.c
@@ -2609,6 +2609,8 @@ xf86DisableUnusedFunctions(ScrnInfoPtr pScrn)
 	    memset(&crtc->mode, 0, sizeof(crtc->mode));
 	}
     }
+    if (pScrn->pScreen)
+	xf86_crtc_notify(pScrn->pScreen);
 }
 
 #ifdef RANDR_12_INTERFACE
@@ -2863,3 +2865,34 @@ xf86_crtc_clip_video_helper(ScrnInfoPtr pScrn,
 
     return ret;
 }
+
+xf86_crtc_notify_proc_ptr
+xf86_wrap_crtc_notify (ScreenPtr screen, xf86_crtc_notify_proc_ptr new)
+{
+    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
+    xf86CrtcConfigPtr	config = XF86_CRTC_CONFIG_PTR(scrn);
+    xf86_crtc_notify_proc_ptr	old;
+    
+    old = config->xf86_crtc_notify;
+    config->xf86_crtc_notify = new;
+    return old;
+}
+
+void
+xf86_unwrap_crtc_notify(ScreenPtr screen, xf86_crtc_notify_proc_ptr old)
+{
+    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
+    xf86CrtcConfigPtr	config = XF86_CRTC_CONFIG_PTR(scrn);
+
+    config->xf86_crtc_notify = old;
+}
+
+void
+xf86_crtc_notify(ScreenPtr screen)
+{
+    ScrnInfoPtr		scrn = xf86Screens[screen->myNum];
+    xf86CrtcConfigPtr	config = XF86_CRTC_CONFIG_PTR(scrn);
+    
+    if (config->xf86_crtc_notify)
+	config->xf86_crtc_notify(screen);
+}
diff --git a/hw/xfree86/modes/xf86Crtc.h b/hw/xfree86/modes/xf86Crtc.h
index 83b1f13e8..ef8589ed1 100644
--- a/hw/xfree86/modes/xf86Crtc.h
+++ b/hw/xfree86/modes/xf86Crtc.h
@@ -569,6 +569,8 @@ typedef struct _xf86CrtcConfigFuncs {
 	      int		height);
 } xf86CrtcConfigFuncsRec, *xf86CrtcConfigFuncsPtr;
 
+typedef void (*xf86_crtc_notify_proc_ptr) (ScreenPtr pScreen);
+
 typedef struct _xf86CrtcConfig {
     int			num_output;
     xf86OutputPtr	*output;
@@ -621,6 +623,9 @@ typedef struct _xf86CrtcConfig {
     /* wrap screen BlockHandler for rotation */
     ScreenBlockHandlerProcPtr	BlockHandler;
 
+    /* callback when crtc configuration changes */
+    xf86_crtc_notify_proc_ptr  xf86_crtc_notify;
+
 } xf86CrtcConfigRec, *xf86CrtcConfigPtr;
 
 extern int xf86CrtcConfigPrivateIndex;
@@ -838,4 +843,13 @@ xf86_crtc_clip_video_helper(ScrnInfoPtr pScrn,
 			    INT32	width,
 			    INT32	height);
     
+xf86_crtc_notify_proc_ptr
+xf86_wrap_crtc_notify (ScreenPtr pScreen, xf86_crtc_notify_proc_ptr new);
+
+void
+xf86_unwrap_crtc_notify(ScreenPtr pScreen, xf86_crtc_notify_proc_ptr old);
+
+void
+xf86_crtc_notify(ScreenPtr pScreen);
+
 #endif /* _XF86CRTC_H_ */