Всем привет. Помогите понять логи x11vnc.

1. 15/01/2021 15:08:33 passing arg to libvncserver: -rfbport
2. 15/01/2021 15:08:33 passing arg to libvncserver: 5900
3. 15/01/2021 15:08:33 passing arg to libvncserver: -dontdisconnect
4. 15/01/2021 15:08:33 passing arg to libvncserver: -rfbauth
5. 15/01/2021 15:08:33 passing arg to libvncserver: /etc/x11vnc.pass
6. 15/01/2021 15:08:33 x11vnc version: 0.9.13 lastmod: 2011-08-10 pid: 6801 xauth: unable to generate an authority file name
7. 15/01/2021 15:08:33 -auth guess: using ‘XAUTHORITY=/var/run/xauth/A:0-Ppz3ma’ for disp=‘unset’
8. 15/01/2021 15:08:33 XOpenDisplay("") failed.
9. 15/01/2021 15:08:33 Trying again with XAUTHLOCALHOSTNAME=localhost …
10. 15/01/2021 15:08:33 ^G
11. 15/01/2021 15:08:33 *** XOpenDisplay failed. No -display or DISPLAY.
12. 15/01/2021 15:08:33 *** Trying «:0» in 4 seconds. Press Ctrl-C to abort.
13. 15/01/2021 15:08:33 *** 1 2

Подскажите в чём может быть проблема?