diff --git a/[refs] b/[refs]
index 02f541fcf27e..ff217d4e9b46 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6587eb82617f7913c13e750e73e13fa9c829863c
+refs/heads/master: afceb9319f21b18ee3bc15ee9a5f92e18ef8a8c9
diff --git a/trunk/drivers/gpu/drm/radeon/atombios_encoders.c b/trunk/drivers/gpu/drm/radeon/atombios_encoders.c
index e607c4d7dd98..2d39f9977e00 100644
--- a/trunk/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/trunk/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -230,6 +230,10 @@ atombios_dvo_setup(struct drm_encoder *encoder, int action)
 	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
 		return;
 
+	/* some R4xx chips have the wrong frev */
+	if (rdev->family <= CHIP_RV410)
+		frev = 1;
+
 	switch (frev) {
 	case 1:
 		switch (crev) {