diff --git a/connectcore-demo-example/demoserver.py b/connectcore-demo-example/demoserver.py
index 043bbf9..78f1617 100755
--- a/connectcore-demo-example/demoserver.py
+++ b/connectcore-demo-example/demoserver.py
@@ -646,13 +646,18 @@ def get_video_resolution():
     Returns:
         String: Video resolution.
     """
-    res = read_file("/sys/class/drm/card0/card0-DPI-1/modes")
+    res = read_file("/sys/class/drm/card0/card0-HDMI-A-1/modes")
+    if res == NOT_AVAILABLE:
+        res = read_file("/sys/class/drm/card0/card0-DPI-1/modes")
     if res == NOT_AVAILABLE:
         res = read_file("/sys/class/graphics/fb0/modes")
     if res == NOT_AVAILABLE:
         return "-"
 
-    return res.splitlines()[0].split(":")[1].strip()
+    line = res.splitlines()[0]
+    if ":" in line:
+        line = line.split(":")[1]
+    return line.strip()
 
 
 def is_dual_system():