diff -Naur xf86-video-i810-1.4.1.3.old/man/i810.man xf86-video-i810-1.4.1.3/man/i810.man
--- xf86-video-i810-1.4.1.3.old/man/i810.man	2005-12-19 01:07:50.000000000 -0800
+++ xf86-video-i810-1.4.1.3/man/i810.man	2006-03-02 11:48:07.000000000 -0800
@@ -158,6 +158,10 @@
 local mirroring and disable the use of this option.
 Default: Clone mode on pipe B is disabled.
 .TP
+.BI "Option \*qCloneOnHotKey\*q \*q" boolean \*q
+This is exactly the same as Clone, above, except on startup the second
+head is turned off.
+.TP
 .BI "Option \*qCloneRefresh\*q \*q" integer \*q
 When the Clone option is specified we can drive the second monitor at a
 different refresh rate than the primary. 
diff -Naur xf86-video-i810-1.4.1.3.old/src/i830_driver.c xf86-video-i810-1.4.1.3/src/i830_driver.c
--- xf86-video-i810-1.4.1.3.old/src/i830_driver.c	2005-10-03 02:39:17.000000000 -0700
+++ xf86-video-i810-1.4.1.3/src/i830_driver.c	2006-03-02 11:50:37.000000000 -0800
@@ -146,6 +146,8 @@
  *
  *    30/2005 Alan Hourihane
  *        - Add Intel(R) 945G support.
+ *    03/2006 Carl Michal
+ *        - Add CloneOnHotKey option
  */
 
 #ifdef HAVE_CONFIG_H
@@ -231,6 +233,7 @@
    OPTION_DEVICE_PRESENCE,
    OPTION_MONITOR_LAYOUT,
    OPTION_CLONE,
+   OPTION_CLONE_ON_HOT_KEY,
    OPTION_CLONE_REFRESH,
    OPTION_CHECKDEVICES,
    OPTION_FIXEDPIPE,
@@ -252,6 +255,7 @@
    {OPTION_DEVICE_PRESENCE,"DevicePresence",OPTV_BOOLEAN,{0},	FALSE},
    {OPTION_MONITOR_LAYOUT, "MonitorLayout", OPTV_ANYSTR,{0},	FALSE},
    {OPTION_CLONE,	"Clone",	OPTV_BOOLEAN,	{0},	FALSE},
+   {OPTION_CLONE_ON_HOT_KEY, "CloneOnHotKey",OPTV_BOOLEAN, {0}, FALSE},
    {OPTION_CLONE_REFRESH,"CloneRefresh",OPTV_INTEGER,	{0},	FALSE},
    {OPTION_CHECKDEVICES, "CheckDevices",OPTV_BOOLEAN,	{0},	FALSE},
    {OPTION_FIXEDPIPE,   "FixedPipe",    OPTV_ANYSTR, 	{0},	FALSE},
@@ -1936,6 +1940,7 @@
    const char *chipname;
    unsigned int ver;
    char v[5];
+   Bool CloneOnHotKey = FALSE;
 
    if (pScrn->numEntities != 1)
       return FALSE;
@@ -2398,7 +2403,11 @@
       pI830->specifiedMonitor = TRUE;
    }
 
-   if (xf86ReturnOptValBool(pI830->Options, OPTION_CLONE, FALSE)) {
+   if (xf86ReturnOptValBool(pI830->Options, OPTION_CLONE_ON_HOT_KEY, FALSE))
+       CloneOnHotKey = TRUE;
+
+   if (xf86ReturnOptValBool(pI830->Options, OPTION_CLONE, FALSE)
+       || CloneOnHotKey ) {
       if (pI830->availablePipes == 1) {
          xf86DrvMsg(pScrn->scrnIndex, X_ERROR, 
  		 "Can't enable Clone Mode because this is a single pipe device\n");
@@ -2768,7 +2777,8 @@
    
       pI830->operatingDevices = (pI830->MonType2 << 8) | pI830->MonType1;
 
-      if (!xf86IsEntityShared(pScrn->entityList[0]) && !pI830->Clone) {
+      if ((!xf86IsEntityShared(pScrn->entityList[0]) && !pI830->Clone)
+	  || CloneOnHotKey) {
 	  /* If we're not dual head or clone, turn off the second head,
           * if monitorlayout is also specified. */