Para openSUSE Slowroll execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Factory/openSUSE_Slowroll/X11:COSMIC:Factory.repo
zypper refresh
zypper install cosmic-osd
Para openSUSE Factory execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Factory/openSUSE_Factory/X11:COSMIC:Factory.repo
zypper refresh
zypper install cosmic-osd
Para 16.0 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:COSMIC:Factory/16.0/X11:COSMIC:Factory.repo
zypper refresh
zypper install cosmic-osd