--- xf86-video-ati-6.6.1/src/radeon_driver.c.dotclock-filter	2006-06-26 18:40:29.000000000 -0400
+++ xf86-video-ati-6.6.1/src/radeon_driver.c	2006-06-26 18:41:55.000000000 -0400
@@ -3739,7 +3739,7 @@
 {
     MonPtr      mon = pScrn->monitor;
     xf86MonPtr  ddc = mon->DDC;
-    int         i;
+    int         i, clock;
 
     if (flag) { /* HSync */
 	for (i = 0; i < 4; i++) {
@@ -3747,6 +3747,9 @@
 		mon->nHsync = 1;
 		mon->hsync[0].lo = ddc->det_mon[i].section.ranges.min_h;
 		mon->hsync[0].hi = ddc->det_mon[i].section.ranges.max_h;
+		clock = ddc->det_mon[i].section.ranges.max_clock * 1000;
+		if (clock > mon->maxPixClock)
+		    mon->maxPixClock = clock;
 		return;
 	    }
 	}
@@ -3793,6 +3796,9 @@
 		mon->nVrefresh = 1;
 		mon->vrefresh[0].lo = ddc->det_mon[i].section.ranges.min_v;
 		mon->vrefresh[0].hi = ddc->det_mon[i].section.ranges.max_v;
+		clock = ddc->det_mon[i].section.ranges.max_clock * 1000;
+		if (clock > mon->maxPixClock)
+		    mon->maxPixClock = clock;
 		return;
 	    }
 	}