[Stable-9.0.1 70/71] ui/sdl2: Allow host to power down screen

[Michael Tokarev]

From: Bernhard Beschow <shentey@gmail.com>

By default, SDL disables the screen saver which prevents the host from powering
down the screen even if the screen is locked. This results in draining the
battery needlessly when the host isn't connected to a wall charger. Fix that by
enabling the screen saver.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240512095945.1879-1-shentey@gmail.com>
(cherry picked from commit 2e701e6785cd8cc048c608751c6e4f6253c67ab6)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 4971963f00..0a0eb5a42d 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -874,6 +874,7 @@ static void sdl2_display_init(DisplayState *ds, 
DisplayOptions *o)
     SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0");
 #endif
     SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
+    SDL_EnableScreenSaver();
     memset(&info, 0, sizeof(info));
     SDL_VERSION(&info.version);
 
-- 
2.39.2