diff --git a/src/atombios_output.c b/src/atombios_output.c
index eb52f5c..e4e0604 100644
--- a/src/atombios_output.c
+++ b/src/atombios_output.c
@@ -312,6 +312,8 @@ atombios_output_digital_setup(xf86OutputPtr output, int device, DisplayModePtr m
 		if (radeon_output->lvds_misc & (1 << 1))
 		    disp_data.ucMisc |= (1 << 1);
 	    } else {
+		if (radeon_output->linkb)
+		    disp_data.ucMisc |= PANEL_ENCODER_MISC_TMDS_LINKB;
 		if (mode->Clock > 165000)
 		    disp_data.ucMisc |= PANEL_ENCODER_MISC_DUAL;
 		if (pScrn->rgbBits == 8)
@@ -352,6 +354,8 @@ atombios_output_digital_setup(xf86OutputPtr output, int device, DisplayModePtr m
 			disp_data2.ucTemporal |= PANEL_ENCODER_TEMPORAL_LEVEL_4;
 		}
 	    } else {
+		if (radeon_output->linkb)
+		    disp_data2.ucMisc |= PANEL_ENCODER_MISC_TMDS_LINKB;
 		if (mode->Clock > 165000)
 		    disp_data2.ucMisc |= PANEL_ENCODER_MISC_DUAL;
 	    }
@@ -441,7 +445,10 @@ atombios_output_dig_encoder_setup(xf86OutputPtr output, int device, DisplayModeP
 	disp_data.ucConfig |= ATOM_ENCODER_CONFIG_LINKA_B;
 	disp_data.ucLaneNum = 8;
     } else {
-	disp_data.ucConfig |= ATOM_ENCODER_CONFIG_LINKA;
+	if (radeon_output->linkb)
+	    disp_data.ucConfig |= ATOM_ENCODER_CONFIG_LINKB;
+	else
+	    disp_data.ucConfig |= ATOM_ENCODER_CONFIG_LINKA;
 	disp_data.ucLaneNum = 4;
     }
 
diff --git a/src/radeon_atombios.c b/src/radeon_atombios.c
index 1ca9f86..50b23ad 100644
--- a/src/radeon_atombios.c
+++ b/src/radeon_atombios.c
@@ -1613,6 +1613,7 @@ RADEONGetATOMConnectorInfoFromBIOSObject (ScrnInfoPtr pScrn)
 	     + le16_to_cpu(con_obj->asObjects[i].usSrcDstTableOffset));
 
 	ErrorF("object id %04x %02x\n", obj_id, SrcDstTable->ucNumberOfSrc);
+	ErrorF("enum %d\n", num);
 
 	if ((info->ChipFamily == CHIP_FAMILY_RS780) &&
 	    (obj_id == CONNECTOR_OBJECT_ID_PCIE_CONNECTOR)) {
@@ -1640,6 +1641,7 @@ RADEONGetATOMConnectorInfoFromBIOSObject (ScrnInfoPtr pScrn)
 	else
 	    info->BiosConnector[i].valid = TRUE;
 	info->BiosConnector[i].devices = 0;
+	info->BiosConnector[i].linkb = FALSE;
 
 	for (j = 0; j < SrcDstTable->ucNumberOfSrc; j++) {
 	    uint8_t sobj_id;
@@ -1647,6 +1649,9 @@ RADEONGetATOMConnectorInfoFromBIOSObject (ScrnInfoPtr pScrn)
 	    sobj_id = (le16_to_cpu(SrcDstTable->usSrcObjectID[j]) & OBJECT_ID_MASK) >> OBJECT_ID_SHIFT;
 	    ErrorF("src object id %04x %d\n", le16_to_cpu(SrcDstTable->usSrcObjectID[j]), sobj_id);
 
+	    if (num == 2)
+		info->BiosConnector[i].linkb = TRUE;
+
 	    switch(sobj_id) {
 	    case ENCODER_OBJECT_ID_INTERNAL_LVDS:
 		info->BiosConnector[i].devices |= (1 << ATOM_DEVICE_LCD1_INDEX);
@@ -2036,6 +2041,7 @@ RADEONGetATOMConnectorInfoFromBIOSConnectorTable (ScrnInfoPtr pScrn)
 	info->BiosConnector[i].output_id = ci.sucI2cId.sbfAccess.bfI2C_LineMux;
 	info->BiosConnector[i].devices = (1 << i);
 	info->BiosConnector[i].ConnectorType = ci.sucConnectorInfo.sbfAccess.bfConnectorType;
+	info->BiosConnector[i].linkb = FALSE;
 
 	if (info->BiosConnector[i].ConnectorType == CONNECTOR_NONE) {
 	    info->BiosConnector[i].valid = FALSE;
diff --git a/src/radeon_output.c b/src/radeon_output.c
index 5924c81..4aa99d6 100644
--- a/src/radeon_output.c
+++ b/src/radeon_output.c
@@ -2858,6 +2858,7 @@ Bool RADEONSetupConnectors(ScrnInfoPtr pScrn)
 	    radeon_output->igp_lane_info = info->BiosConnector[i].igp_lane_info;
 	    radeon_output->shared_ddc = info->BiosConnector[i].shared_ddc;
 	    radeon_output->load_detection = info->BiosConnector[i].load_detection;
+	    radeon_output->linkb = info->BiosConnector[i].linkb;
 
 	    if (radeon_output->ConnectorType == CONNECTOR_DVI_D)
 		radeon_output->DACType = DAC_NONE;
diff --git a/src/radeon_probe.h b/src/radeon_probe.h
index 5cd610c..7ed9a6b 100644
--- a/src/radeon_probe.h
+++ b/src/radeon_probe.h
@@ -210,6 +210,7 @@ typedef struct {
     Bool shared_ddc;
     int i2c_line_mux;
     Bool load_detection;
+    Bool linkb;
 } RADEONBIOSConnector;
 
 typedef struct _RADEONOutputPrivateRec {
@@ -270,6 +271,7 @@ typedef struct _RADEONOutputPrivateRec {
     int               devices;
     Bool enabled;
     Bool shared_ddc;
+    Bool linkb;
 } RADEONOutputPrivateRec, *RADEONOutputPrivatePtr;
 
 struct avivo_pll_state {