Comment 94 for bug 1359689

Ok, after a reboot (I set GRUB_GFXPAYLOAD_LINUX=1600x900 in /etc/default/grub), no change in behaviour. I'm *not* seeing the characters that some people (in older comments above) report by hitting up and down arrows (I see no visible change to my display from any characters). If I type the passphrase on the dark screen (yes, risky I know!) incorrectly, there's no visible change to the system. I tried a reboot with the "upstart" version of the boot profile (as opposed to the default systemd) and I get a text-mode encryption passphrase prompt. It otherwise starts as expected (pops straight into graphics mode MDM (the default Mint graphical login manager).