From 5789da67cff1dc08078bfed8d19384817cc8ecd6 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Mon, 3 Apr 2017 13:32:53 -0700
Subject: [PATCH] Fixed bug 1859 - No SDL_VIDEORESIZE event generated when the
 window manager sets the window size.

Samuel Hopkins

Just confirming that the patch from Andreas (attachment 1715 [details]) works for me under SDL 2.0.3 with xmonad.

Stas Sergeev

Confirming that the patch in this ticket fixes the full-screen switching for dosemu2 on ubuntu-16.04. Note that I am not using xmonad, so this bug appears to be generic.
---
 src/video/x11/SDL_x11framebuffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/x11/SDL_x11framebuffer.c b/src/video/x11/SDL_x11framebuffer.c
index f51691d37..afd1d5137 100644
--- a/src/video/x11/SDL_x11framebuffer.c
+++ b/src/video/x11/SDL_x11framebuffer.c
@@ -97,7 +97,7 @@ X11_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format,
                 shm_error = False;
                 X_handler = X11_XSetErrorHandler(shm_errhandler);
                 X11_XShmAttach(display, shminfo);
-                X11_XSync(display, True);
+                X11_XSync(display, False);
                 X11_XSetErrorHandler(X_handler);
                 if ( shm_error )
                     shmdt(shminfo->shmaddr);