Bug#801106: sddm still fails to start

[Matthias Klumpp <matthias@tenstral.net>]

Hi!
Are you using Plymouth? If so, I might have resolved this issue
already (not yet uploaded to the archive).
Please try applying this patch to the /lib/systemd/system/sddm.service file:
http://anonscm.debian.org/cgit/pkg-kde/kde-std/sddm.git/commit/?id=b50b826a4809b85270d5adc026b6d28fcdbb47c5
And see if that resolves the issue.
Anyway, "failed to bring up the login screen" is very broad - what
exacly happened? Did it crash? Did you get a tty, or just a black
screen?

Cheers,
    Matthias