diff --git a/src/radeon_bios.c b/src/radeon_bios.c
index 529dda7..63a11b2 100644
--- a/src/radeon_bios.c
+++ b/src/radeon_bios.c
@@ -462,6 +462,7 @@ static Bool RADEONGetLegacyConnectorInfoFromBIOS (ScrnInfoPtr pScrn)
     int offset, i, entry, tmp, tmp0, tmp1;
     RADEONLegacyDDCType DDCType;
     RADEONLegacyConnectorType ConnectorType;
+    RADEONEntPtr pRADEONEnt = RADEONEntPriv(pScrn);
 
     if (!info->VBIOS) return FALSE;
 
@@ -532,6 +533,10 @@ static Bool RADEONGetLegacyConnectorInfoFromBIOS (ScrnInfoPtr pScrn)
 	    if (info->IsIGP)
 		info->BiosConnector[i].DACType = DAC_TVDAC;
 
+	    /* For ES1000 chips, there is no primary DAC. Force VGA port to use TVDAC*/
+	    if (info->ChipFamily == CHIP_FAMILY_RV100 && !pRADEONEnt->HasCRTC2)
+		info->BiosConnector[i].DACType = DAC_TVDAC;
+
 	    if ((tmp >> 4) & 0x1)
 		info->BiosConnector[i].TMDSType = TMDS_EXT;
 	    else