Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:X11:xfce:4.20/openSUSE_Tumbleweed/home:manfred-h:X11:xfce:4.20.repo
zypper refresh
zypper install xfce4-power-manager
Для openSUSE Slowroll запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:X11:xfce:4.20/openSUSE_Slowroll/home:manfred-h:X11:xfce:4.20.repo
zypper refresh
zypper install xfce4-power-manager
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:X11:xfce:4.20/16.0/home:manfred-h:X11:xfce:4.20.repo
zypper refresh
zypper install xfce4-power-manager
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:X11:xfce:4.20/15.6/home:manfred-h:X11:xfce:4.20.repo
zypper refresh
zypper install xfce4-power-manager