diff --git a/src/via_display.c b/src/via_display.c
index 79887fa..2b9e751 100644
--- a/src/via_display.c
+++ b/src/via_display.c
@@ -798,6 +798,9 @@ viaIGAInitCommon(ScrnInfoPtr pScrn)
                             "CR6C: 0x%02X\n", temp));
     }
 
+    temp = hwp->readCrtc(hwp, 0x79);
+    DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+                        "CR79: 0x%02X\n", temp));
 #endif
 
 
@@ -1009,6 +1012,8 @@ viaIGAInitCommon(ScrnInfoPtr pScrn)
         ViaCrtcMask(hwp, 0x6C, 0x00, 0x01);
     }
 
+    ViaCrtcMask(hwp, 0x79, 0x00, 0x01);
+
     DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO,
                         "Exiting viaIGAInitCommon.\n"));
 }
@@ -1042,6 +1047,12 @@ viaIGA1Init(ScrnInfoPtr pScrn)
     DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO,
                         "CR33: 0x%02X\n", temp));
 
+    if (pVia->Chipset == VIA_VX900) {
+        temp = hwp->readCrtc(hwp, 0x45);
+        DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+                            "CR45: 0x%02X\n", temp));
+    }
+
     /* For UniChrome Pro and Chrome9. */
     if ((pVia->Chipset != VIA_CLE266)
         && (pVia->Chipset != VIA_KM400)) {
@@ -1150,6 +1161,10 @@ viaIGA1Init(ScrnInfoPtr pScrn)
      *               111: Shift to early time by 2 characters */
     ViaCrtcMask(hwp, 0x33, 0x05, 0xCF);
 
+    if (pVia->Chipset == VIA_VX900) {
+        ViaCrtcMask(hwp, 0x45, 0x00, 0x01);
+    }
+
     /* For UniChrome Pro and Chrome9. */
     if ((pVia->Chipset != VIA_CLE266)
         && (pVia->Chipset != VIA_KM400)) {