diff --git a/src/detection/displayserver/linux/displayserver_linux.c b/src/detection/displayserver/linux/displayserver_linux.c
index 13ffcf5e6..3d6c76402 100644
--- a/src/detection/displayserver/linux/displayserver_linux.c
+++ b/src/detection/displayserver/linux/displayserver_linux.c
@@ -1,4 +1,5 @@
 #include "displayserver_linux.h"
+#include "common/io/io.h"
 #include "util/stringUtils.h"
 
 #include <dirent.h>
@@ -81,21 +82,25 @@ void ffConnectDisplayServerImpl(FFDisplayServerResult* ds)
         //This method can't detect the name of our WM / DE
         ffdsConnectWayland(ds);
 
-        //Try the x11 libs, from most feature rich to least.
-        //We use the display list to detect if a connection is needed.
-        //They respect wmProtocolName, and only detect display if it is set.
-
         if(ds->displays.length == 0)
+        {
+            //Try the x11 libs, from most feature rich to least.
+            //We use the display list to detect if a connection is needed.
+            //They respect wmProtocolName, and only detect display if it is set.
+
+            FF_SUPPRESS_IO(); // #505
+
             ffdsConnectXcbRandr(ds);
 
-        if(ds->displays.length == 0)
-            ffdsConnectXrandr(ds);
+            if(ds->displays.length == 0)
+                ffdsConnectXrandr(ds);
 
-        if(ds->displays.length == 0)
-            ffdsConnectXcb(ds);
+            if(ds->displays.length == 0)
+                ffdsConnectXcb(ds);
 
-        if(ds->displays.length == 0)
-            ffdsConnectXlib(ds);
+            if(ds->displays.length == 0)
+                ffdsConnectXlib(ds);
+        }
     }
 
     //This display detection method is display server independent.