fix

sysgo/UI/util_funcs.go

@@ -128,10 +128,15 @@ func ReplaceSuffix(orig_file_str string, new_ext string) string {
 	return orig_file_str // failed just return back where it came
 }
 
-func SwapAndShow() {
+func DisplayFlip() {
 	display.Flip()
 }
 
+func AsyncDisplayFlip() {
+        display.ASync(func() {
+                display.Flip()
+        })
+}
 func ReadLines(path string) (lines []string, err error) {
 	var (
 		file   *os.File