diff --git a/src/etc/etc.sparc/sysctl.conf b/src/etc/etc.sparc/sysctl.conf
index 50e54ded..c6f01028 100644
--- a/src/etc/etc.sparc/sysctl.conf
+++ b/src/etc/etc.sparc/sysctl.conf
@@ -1 +1,2 @@
 #machdep.led_blink=1		# 1=On sparc, make led(s) blink
+#machdep.vsyncblank=1		# 1=Turn video sync off when blanking