diff -Nurp patched/src/i830_bios.c working/src/i830_bios.c
--- patched/src/i830_bios.c	2009-01-14 12:36:59.000000000 -0800
+++ working/src/i830_bios.c	2009-01-14 12:40:10.000000000 -0800
@@ -221,13 +221,13 @@ i830_bios_get_panel_mode(ScrnInfoPtr pSc
 		_H_SYNC_OFF(timing_ptr);
 	    fixed_mode->HSyncEnd   = fixed_mode->HSyncStart +
 		_H_SYNC_WIDTH(timing_ptr);
-	    fixed_mode->HTotal     = fixed_mode->HDisplay +
+	    fixed_mode->HTotal     = fixed_mode->HSyncEnd +
 	        _H_BLANK(timing_ptr);
 	    fixed_mode->VSyncStart = fixed_mode->VDisplay +
 		_V_SYNC_OFF(timing_ptr);
 	    fixed_mode->VSyncEnd   = fixed_mode->VSyncStart +
 		_V_SYNC_WIDTH(timing_ptr);
-	    fixed_mode->VTotal     = fixed_mode->VDisplay +
+	    fixed_mode->VTotal     = fixed_mode->VSyncEnd +
 	        _V_BLANK(timing_ptr);
 	    fixed_mode->Clock      = _PIXEL_CLOCK(timing_ptr) / 1000;
 	    fixed_mode->type       = M_T_PREFERRED;