I think I have found the origin of my problem. First I tried to disconnect the network before shutting down and I noticed that the system turned off properly (even the monitor).
So I tried to put modprobe -r wl in /etc/init.d/unmountroot and it is working too, then I removed directly the package bcmwl and keeping the connection on the system can shutdown well although the message / is busy is still there. In conclusion the bcmwl-kernel-source is preventing the system to turn off. Can someone verify if it? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1019347 Title: A message: "mount: / is busy" appears every time shutting down or rebooting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1019347/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
