diff --git a/src/i830_lvds.c b/src/i830_lvds.c
index 239bc89..fd7ad46 100644
--- a/src/i830_lvds.c
+++ b/src/i830_lvds.c
@@ -760,6 +760,8 @@ i830_lvds_mode_set(xf86OutputPtr output, DisplayModePtr mode,
      */
     OUTREG(PFIT_PGM_RATIOS, dev_priv->pfit_pgm_ratios);
     OUTREG(PFIT_CONTROL, dev_priv->pfit_control);
+    /* XXX hack!!! use vbios's PP_DIVISOR value instead */
+    OUTREG(PP_DIVISOR, 0x00270f05);
 }
 
 /**