Comment # 5 on bug 1226053 from Fabian Vogt

(In reply to Örs from comment #4)
> (In reply to Fabian Vogt from comment #3)
> > kcm_sddm is supposed to write kde_settings.conf as well as
> > /etc/sysconfig/displaymanager.
> > Can you verify that the latter has the right value set for
> > DISPLAYMANAGER_AUTOLOGIN?
> 
> Sure:
> DISPLAYMANAGER_AUTOLOGIN="vajdao"

Ok, so that should work.

I wonder whether it's really autologin not working if configured with the
KCM or it's a duplicate of the already mentioned bug reports, which just
make autologin (very) unreliable.

Please attach the journal for the boot until attempted autologin.

> Also, you mentioned kcm_sddm, should it get installed by default distro
> install process?

sddm-kcm6 is the correct one kcm_sddm is just the package name for Plasma 5.