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Bug 3180

Summary: libsdl2: windows set to fullscreen with SDL_WINDOW_FULLSCREEN_DESKTOP are not visible in xmonad
Product: SDL Reporter: Lucian Poston <lucianposton>
Component: videoAssignee: Ryan C. Gordon <icculus>
Status: ASSIGNED --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: lucianposton
Version: 2.0.3   
Hardware: x86_64   
OS: Linux   
Attachments: c++ program demonstrating issue

Description Lucian Poston 2015-11-14 06:59:04 UTC 
Created attachment 2302 [details]
c++ program demonstrating issue

Fullscreen windows created via SDL_CreateWindow() using the SDL_WINDOW_FULLSCREEN_DESKTOP flag are not visible when run in xmonad window manager. This also occurs to a window is set to fullscreen via SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP).

Attached simple program demonstrating issue.
Comment 1 Lucian Poston 2015-11-14 09:49:42 UTC 
For anyone else encountering this issue, a workaround in xmonad is to enable ewmh. See http://xmonad.org/xmonad-docs/xmonad-contrib/XMonad-Hooks-EwmhDesktops.html#v:ewmh

Enabling ewmh causes libsdl2 to use _NET_WM_STATE_FULLSCREEN code path instead of the legacy mode in SDL_x11window.c.