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charset="utf-8" Display refreshment is invoked by a timer and it erroneously disables the active scanout if it happens to be invoked after scanout has been enabled. This offending scanout-disable race condition with a timer can be easily hit when Qemu runs with a disabled vsync by using SDL or GTK displays (with vblank_mode=3D0 for GTK). Refreshment of display's content shouldn't disable the active display. Fix it by keeping the scanout's state unchanged when display is redrawn. Signed-off-by: Dmitry Osipenko Reviewed-by: Akihiko Odaki Tested-by: Bernhard Beschow --- ui/sdl2-gl.c | 1 - 1 file changed, 1 deletion(-) diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c index e01d9ab0c7bf..4975d923db38 100644 --- a/ui/sdl2-gl.c +++ b/ui/sdl2-gl.c @@ -51,7 +51,6 @@ static void sdl2_gl_render_surface(struct sdl2_console *s= con) int ww, wh; =20 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); - sdl2_set_scanout_mode(scon, false); =20 SDL_GetWindowSize(scon->real_window, &ww, &wh); surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); --=20 2.46.0