diff --git a/hw/xfree86/doc/man/xorg.conf.man.pre b/hw/xfree86/doc/man/xorg.conf.man.pre
index 943009c03..634805a69 100644
--- a/hw/xfree86/doc/man/xorg.conf.man.pre
+++ b/hw/xfree86/doc/man/xorg.conf.man.pre
@@ -1389,6 +1389,10 @@ This option controls whether the video card should drive the sync signal
 on the green color pin.  Not all cards support this option, and most
 monitors do not require it.  The default is off.
 .TP 7
+.BI "Option " "\*qPrimary\*q  " \*qbool\*q
+This optional entry specifies that the monitor should be treated as the primary
+monitor. (RandR 1.2-supporting drivers only)
+.TP7
 .BI "Option " "\*qPreferredMode\*q  " \*qstring\*q
 This optional entry specifies a mode to be marked as the preferred initial mode
 of the monitor.
diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c
index c46b8260a..af980c47d 100644
--- a/hw/xfree86/modes/xf86Crtc.c
+++ b/hw/xfree86/modes/xf86Crtc.c
@@ -439,6 +439,7 @@ typedef enum {
     OPTION_IGNORE,
     OPTION_ROTATE,
     OPTION_PANNING,
+    OPTION_PRIMARY,
 } OutputOpts;
 
 static OptionInfoRec xf86OutputOptions[] = {
@@ -455,6 +456,7 @@ static OptionInfoRec xf86OutputOptions[] = {
     {OPTION_IGNORE,	    "Ignore",		OPTV_BOOLEAN, {0}, FALSE },
     {OPTION_ROTATE,	    "Rotate",		OPTV_STRING,  {0}, FALSE },
     {OPTION_PANNING,	    "Panning",		OPTV_STRING,  {0}, FALSE },
+    {OPTION_PRIMARY,	    "Primary",		OPTV_BOOLEAN, {0}, FALSE },
     {-1,		    NULL,		OPTV_NONE,    {0}, FALSE },
 };
 
@@ -587,6 +589,7 @@ xf86OutputCreate (ScrnInfoPtr		    scrn,
     xf86OutputPtr	output, *outputs;
     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
     int			len;
+    Bool		primary;
 
     if (name)
 	len = strlen (name) + 1;
@@ -632,10 +635,22 @@ xf86OutputCreate (ScrnInfoPtr		    scrn,
 	xfree (output);
 	return NULL;
     }
-    
+
     xf86_config->output = outputs;
-    xf86_config->output[xf86_config->num_output++] = output;
-    
+
+    if (xf86GetOptValBool (output->options, OPTION_PRIMARY, &primary) && primary)
+    {
+	memmove(xf86_config->output + 1, xf86_config->output,
+		xf86_config->num_output * sizeof (xf86OutputPtr));
+	xf86_config->output[0] = output;
+    }
+    else
+    {
+	xf86_config->output[xf86_config->num_output] = output;
+    }
+
+    xf86_config->num_output++;
+
     return output;
 }