diff -urN xf86-video-intel-2.2.0.old/src/i830_lvds.c xf86-video-intel-2.2.0/src/i830_lvds.c
--- xf86-video-intel-2.2.0.old/src/i830_lvds.c	2008-01-04 07:00:59.000000000 +0400
+++ xf86-video-intel-2.2.0/src/i830_lvds.c	2008-01-04 07:11:37.451419732 +0400
@@ -234,6 +234,12 @@
 #endif
     }
 
+    /*
+     * Don't set the lowest bit in combo configs since it can act as a flag for
+     * max brightness.
+     */
+    level <<= 1;
+
     blc_pwm_ctl = INREG(BLC_PWM_CTL);
     blc_pwm_ctl &= ~BACKLIGHT_DUTY_CYCLE_MASK;
     OUTREG(BLC_PWM_CTL, blc_pwm_ctl | (level << BACKLIGHT_DUTY_CYCLE_SHIFT));
@@ -248,7 +254,17 @@
 
     blc_pwm_ctl = INREG(BLC_PWM_CTL);
     blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK;
-    return blc_pwm_ctl;
+
+    /* Since we don't use the low bit when using combo, the value is halved */
+
+    return blc_pwm_ctl >> 1;
+}
+
+static int
+i830_lvds_get_backlight_max_combo(xf86OutputPtr output)
+{
+    /* Since we don't set the low bit when using combo, the range is halved */
+    return i830_lvds_get_backlight_max_native(output) >> 1;
 }
 
 /*
@@ -661,7 +677,7 @@
 	dev_priv->set_backlight = i830_lvds_set_backlight_combo;
 	dev_priv->get_backlight = i830_lvds_get_backlight_combo;
 	dev_priv->backlight_max =
-	    i830_lvds_get_backlight_max_native(output);
+	    i830_lvds_get_backlight_max_combo(output);
 	break;
     case KERNEL:
 	dev_priv->set_backlight = i830_lvds_set_backlight_kernel;
@@ -1003,7 +1019,7 @@
     case COMBO:
 	dev_priv->set_backlight = i830_lvds_set_backlight_combo;
 	dev_priv->get_backlight = i830_lvds_get_backlight_combo;
-	dev_priv->backlight_max = i830_lvds_get_backlight_max_native(output);
+	dev_priv->backlight_max = i830_lvds_get_backlight_max_combo(output);
 	break;
     case KERNEL:
 	dev_priv->set_backlight = i830_lvds_set_backlight_kernel;