Hi, I have resolved this issue. I realized that the problem occured only when I was using an external screen. It worked perfectly when I was working on the built-in one.
So I tried to change a few things in the control-center and I had error messages. So I checked the version of gnome-control-center : 3.8.3. I've updated it to 3.12 from experimental and everything works damn fine now. I think you should put a dependency between gnome-shell 3.12 and gnome-control-center 3.12 to avoid this kind of issues. According to me, you can close this bug. Thanks a lot. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org