Verifying as well, it broke my upgrade path. Please note that the manpage of gnome-session still documents --choose- session and --choosesession as valid options.
Waves% gnome-session --choose-session openbox ** (gnome-session:7119): WARNING **: Unknown option --choose-session Waves% gnome-session --choosesession openbox ** (gnome-session:7120): WARNING **: Unknown option --choosesession -- openbox/Gnome wont launch from gdm https://bugs.launchpad.net/bugs/272418 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