Comment # 1 on bug 1072249 from Dominique Leuenberger

Reproduced locally - frm my first findings, the issue is simply
'getty@.service' not being enabled by default (vendor preset disabled)

This is 'normally' part of 90-default-SUSE.preset, but this is not part of the
CAASP branding package; none of the other presets shipped in
systemd-presets-branding-CAASP (70-default-CAASP, 90-default-openSUSe,
90-default-disable, 99-default) enable (or mention) getty@.service

After issuing 'systemctl enable getty@; reboot', the login also work son tty1,
as expected