--- linux-3.5.1.orig/drivers/gpu/drm/i915/intel_display.c	2012-08-09 17:23:56.000000000 +0200
+++ linux-3.5.1/drivers/gpu/drm/i915/intel_display.c	2012-08-09 21:13:43.146996673 +0200
@@ -3583,7 +3583,8 @@
 
 		if (intel_encoder->type == INTEL_OUTPUT_EDP) {
 			/* Use VBT settings if we have an eDP panel */
-			unsigned int edp_bpc = dev_priv->edp.bpp / 3;
+			//unsigned int edp_bpc = dev_priv->edp.bpp / 3;
+			unsigned int edp_bpc = 8;
 
 			if (edp_bpc < display_bpc) {
 				DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);