Same issue on a Macbook Air late 2010 (MacBookAir3,2). Killing grub- mount lets ubiquity continue to install, else it's frozen like death. Didn't try the binary from Jacques.
Note that I must kill grub-mount many times during the installation process: before typing my personnal details, after taking a photo with the webcam... I let a terminal open and launch "sudo killall -9 grub- mount" everytime things seem to hang. It succeeded at least 3 times (installation is still going on). Regards, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988583 Title: grub-mount hangs when update-grub is ran To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/988583/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs