From ad7cbfbecc6e525c27da41e44027dfda0085d7ab Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Thu, 11 Oct 2012 14:43:13 -0700
Subject: [PATCH] Only install/uninstall the colormap if we've created a
 DirectColor colormap.

---
 src/video/x11/SDL_x11window.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/video/x11/SDL_x11window.c b/src/video/x11/SDL_x11window.c
index cc6b9f5de..ba4ecc24a 100644
--- a/src/video/x11/SDL_x11window.c
+++ b/src/video/x11/SDL_x11window.c
@@ -993,11 +993,13 @@ X11_SetWindowFullscreenViaWM(_THIS, SDL_Window * window, SDL_VideoDisplay * _dis
         X11_SetNetWMState(_this, data->xwindow, flags);
     }
 
-	if( fullscreen ) {
-		XInstallColormap(display, data->colormap);
-	} else {
-		XUninstallColormap(display, data->colormap);
-	}
+    if (data->visual->class == DirectColor) {
+        if ( fullscreen ) {
+            XInstallColormap(display, data->colormap);
+        } else {
+            XUninstallColormap(display, data->colormap);
+        }
+    }
 
     XFlush(display);
 }