we have Scientific Linux 7 PCs. At one of them I cannot activate the "screen sharing" under "Settings"- "Sharing". I tried to disable / enable the "sharing". I can activate and deactivate the ssh but no the screen sharing. The button in the green frame cannot be switched to "on". Any ideas how to proceed? I already tried:

  • check /etc/systemd/system/vncserver@service
  • check $USER/.vnc
  • check /root/.vnc

should I delete all the vnc related file? Any suggestions are highly appreciated.

enter image description here


Run vncserver manually:

x0vncserver -PasswordFile=~/.vnc/passwd
| improve this answer | |
  • thank you, now I can connect (after having reset the password file) but unfortunately I only see a white-black densely dotted/mash screen. I still do not see the real screen if I do it from ssh. If I start from the PC itself it works. – pallago Sep 18 '18 at 2:11

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