I changed my default session to xfce (instead of "last session") and now the screen saver works! I'll now try the other things you mentioned and keep you posted.
-- xubuntu blank screen and no screen saver https://bugs.launchpad.net/bugs/313045 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs