On Tue, 16 Aug 2016 10:36:55 +1200 Ben Caradoc-Davies <b...@transient.nz>
wrote:
> Dear Maintainer,
Hi,
> apt upgrade to systemd/udev 231-2 and apt upgrade to systemd/udev
231-3 both
> caused X to go black (except for a blinking cursor, looked like a console
> tty?).
>
> Workaround is to switch to a virtual console with Ctrl-Alt-F1 and
then back to
> X with Alt-F7, which restores the X session.
I can reproduce this by running "systemctl daemon-reexec"
I would say this is a duplicate of bug #834367
