Following this tread → https://forums.opensuse.org/showthread.php/476492-x11vnc-startup-script?highlight=x11vnc
I try to enable the service with Service Manager in Yast I get this error:
Writing the configuration failed:
Could not enable x11vnc. *vnc.service - LSB:Start or stop vnc server
Loaded:loaded (etc/init.d/vnc, generated;vender preset:disabled
Active:inactive(dead)
Docs:man:systemd-sysv-generator(8)