Comment # 18 on bug 1188954 from Dean Martin

(In reply to Felix Miata from comment #17)
> I don't want to force early via including graphics modules in initrd.
> 
> One of the Shaman Penguins on the forum thread provided a workaround I can
> use until the real offender can be isolated and possibly dealt with:
> 
> # systemctl cat display-manager.service
> ...
> # /etc/systemd/system/display-manager.service.d/override.conf
> [Unit]
> After= systemd-udev-settle.service
> Requires=systemd-udev-settle.service

Your choice of display-manager is TDM. Have you tested other display-managers
for this behaviour?