Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:Utilities/openSUSE_Tumbleweed/X11:Utilities.repo
zypper refresh
zypper install xournal
Para openSUSE Factory ARM execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:Utilities/openSUSE_Factory_ARM/X11:Utilities.repo
zypper refresh
zypper install xournal
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/X11:Utilities/15.6/X11:Utilities.repo
zypper refresh
zypper install xournal