--- src/via_swov.c
+++ src/via_swov.c
@@ -1728,5 +1728,6 @@
      * Enable video on secondary 
      */
-    if (pVia->Chipset == VIA_P4M900 && pVia->pBIOSInfo->PanelActive) {
+    if ((pVia->Chipset == VIA_P4M900 || pVia->Chipset == VIA_VM800)
+        && pVia->pBIOSInfo->PanelActive) {
         /* V1_ON_SND_DISPLAY */
         vidCtl |= 0x80000000;