systemd >= 211 + nvidia driver is not able to suspend

Regarding to systemd developers this is due to missing DRM interface in /sys:

Are there any plans to implement this DRM interface?

systemd-212 with nvidia works fine in Fedora 21

Do you use systemd-logind to suspend or acpi/pm-utils? Which WM do you use?

I use logind.

DM = lightdm-gtk
DE = cinnamon