From e5ed580db2d9071fa4644182ebaa3d963723c37c Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Sat, 6 Oct 2012 10:53:47 -0700
Subject: [PATCH] XVidMode only works on the screen at the origin

---
 src/video/x11/SDL_x11modes.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/video/x11/SDL_x11modes.c b/src/video/x11/SDL_x11modes.c
index ed6bcd645..b8838fc8c 100644
--- a/src/video/x11/SDL_x11modes.c
+++ b/src/video/x11/SDL_x11modes.c
@@ -567,7 +567,9 @@ X11_InitModes(_THIS)
 #if SDL_VIDEO_DRIVER_X11_XVIDMODE
         if (!displaydata->use_xrandr &&
 #if SDL_VIDEO_DRIVER_X11_XINERAMA
-            (!displaydata->use_xinerama || displaydata->xinerama_info.screen_number == 0) &&
+            /* XVidMode only works on the screen at the origin */
+            (!displaydata->use_xinerama ||
+             (displaydata->x == 0 && displaydata->y == 0)) &&
 #endif
             use_vidmode) {
             displaydata->use_vidmode = use_vidmode;