When you get the working menu in 12.04, are you sure it is grub and not the syslinux menu? What choices are on the menu? Can you press 'C' and get the grub command line? Are the choices the same on 14.04?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1398035 Title: grub suddenly unable to get keystrokes from wireless keyboard and mouse To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1398035/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs