https://bugs.freedesktop.org/show_bug.cgi?id=91960
--- Comment #5 from JM9 jhnmlkvch9@gmail.com --- In my case, I'm logging into X without a login manager at tty1 and after a thaw my laptop display does not come up. Not just the external display. This makes hibernate to unusable.
https://bugs.freedesktop.org/show_bug.cgi?id=93574