For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tdz:branches:X11:XOrg/openSUSE_Factory_zSystems/home:tdz:branches:X11:XOrg.repo
zypper refresh
zypper install xorg-x11-server
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tdz:branches:X11:XOrg/openSUSE_Factory_PowerPC/home:tdz:branches:X11:XOrg.repo
zypper refresh
zypper install xorg-x11-server
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tdz:branches:X11:XOrg/openSUSE_Factory_ARM/home:tdz:branches:X11:XOrg.repo
zypper refresh
zypper install xorg-x11-server