diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
index f02fd9f..6de62a2 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
@@ -50,6 +50,9 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval)
 {
 	const u32 doff = (or * 0x800);
 	int load = -EINVAL;
+	nv_info(priv, "dac_sense (1) - 0x61a004: 0x%08x",
+			nv_rd32(priv, 0x61a004 + doff));
+
 	nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000);
 	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
 	nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval);
@@ -58,8 +61,15 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval)
 	nv_wr32(priv, 0x61a00c + doff, 0x80000000);
 	load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27;
 	nv_wr32(priv, 0x61a00c + doff, 0x00000000);
+
+	nv_info(priv, "dac_sense (2) - 0x61a004: 0x%08x",
+			nv_rd32(priv, 0x61a004 + doff));
+
 	nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000);
 	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
+
+	nv_info(priv, "dac_sense (3) - 0x61a004: 0x%08x",
+			nv_rd32(priv, 0x61a004 + doff));
 	return load;
 }