Bug#695961: workaround

Adding "nomodeset" to boot command line (within /etc/default/grub) solves the boot problem.

Bug#681227: some analysis

Hi, I just spent a few hours trying to analyse this bug, but so far I haven't found what could cause this. The message 'Installing grub on ' is generated by this line: info "Installing grub on '$bootdev'" Obviously, this "bootdev" variable is what the entire rest of the script is built to do, s