diff --git a/overlay/templates/xorg/xorg.dummy.conf b/overlay/templates/xorg/xorg.dummy.conf
index 6021a98..afb55f5 100644
--- a/overlay/templates/xorg/xorg.dummy.conf
+++ b/overlay/templates/xorg/xorg.dummy.conf
@@ -1,12 +1,14 @@
 Section "Device"
     Identifier      "Configured Video Device"
     Driver          "dummy"
+    VideoRam        256000
 EndSection
 
 Section "Monitor"
     Identifier      "Configured Monitor"
-    HorizSync       31.5-48.5
-    VertRefresh     50-70
+    HorizSync       5.0 - 1000.0
+    VertRefresh     5.0 - 200.0
+    ModeLine        "1920x1080" 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +Hsync +Vsync
 EndSection
 
 Section "Screen"
@@ -16,6 +18,6 @@ Section "Screen"
     DefaultDepth    24
     SubSection      "Display"
     Depth           24
-    Modes           "1600x900"
+    Modes           "1920x1080" "1280x800" "1024x768" "1920x1080" "1600x900" "1440x900"
     EndSubSection
 EndSection