Chris Coulson's patch should also solve the problem that breaks install on the Thinkcentre m920s with TPM enabled. The last printed message when booting with grub debug enabled is the type of the loopback file, and nothing happens after that. It finishes installing if you rmmod tpm.
Chris Coulson's patch should also solve the problem that breaks install on the Thinkcentre m920s with TPM enabled. The last printed message when booting with grub debug enabled is the type of the loopback file, and nothing happens after that. It finishes installing if you rmmod tpm.