in fact it seems that was a lightdm issue and fixed with the current version
** Changed in: gnome-settings-daemon (Ubuntu) Importance: Undecided => High ** Changed in: gnome-settings-daemon (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/851847 Title: Nautilus fails to mount external hard drive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/851847/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs