--- a/drivers/gpu/drm/i915/i915_opregion.c	2010-07-25 18:55:40.360419215 -0400
+++ b/drivers/gpu/drm/i915/i915_opregion.c	2010-07-26 14:23:12.516523464 -0400
@@ -270,10 +279,12 @@
 	/* reserve the high 16 bits */
 	cpu_pwm_ctl &= ~(BACKLIGHT_DUTY_CYCLE_MASK);
 	/* write the updated PWM frequency */
-	I915_WRITE(BLC_PWM_CPU_CTL, cpu_pwm_ctl | level);
+	cpu_pwm_ctl = cpu_pwm_ctl | level;
+	if (! cpu_pwm_ctl ) cpu_pwm_ctl=0x4c2;
+	I915_WRITE(BLC_PWM_CPU_CTL, cpu_pwm_ctl);
 
 	asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID;
-
+printk(KERN_INFO "i915:i915_opregion.c reading of backlight level = 0x%08x\n", I915_READ(BLC_PWM_CPU_CTL));
 	return 0;
 }