--- drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c.orig	2013-07-30 19:15:16.480950298 +0100
+++ drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c	2013-07-30 19:17:51.050347475 +0100
@@ -74,9 +74,13 @@
 	switch (mthd & ~0x3f) {
 	case NV50_DISP_DAC_PWR:
 		ret = priv->dac.power(priv, or, data[0]);
+		nv_info(priv, "%s power(or %d, data[0] 0x%08x) 0x%08x\n",
+			__func__, or, data[0], ret);
 		break;
 	case NV50_DISP_DAC_LOAD:
 		ret = priv->dac.sense(priv, or, data[0]);
+		nv_info(priv, "%s sense(or %d, data[0] 0x%08x) 0x%08x\n",
+			__func__, or, data[0], ret);
 		if (ret >= 0) {
 			data[0] = ret;
 			ret = 0;