Hi, after installing Gnome 3 (GNOME Shell) I cannot use SMPlayer anymore. The movie contents are transparent. I have sound, but no video...

Plus: I cannot use wine anymore: at some point in using wine I get completely transparent windows - i.e. I can't see them at all/ I can only find they are there because of the task switcher.

What can I do in both cases? I assume there is one solution for both?