Auto-translated
Heh, thanks for the suggestion, but the situation is complicated by the fact that it's a laptop... I've partially solved the problem by simply clicking on the "restore defaults" link in the settings (as if they weren't already at their default settings...), and unexpectedly the image returned! However, now, if I go underwater or wait for sunset, the screen turns black again... I don't understand it at all. I have to wait until dawn... and I really enjoyed wandering around Chedian at night! =(