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Whenever I select any text the text is immediately copied to the clipboard without me explicitly issuing copy text command. How do I fix this bug or feature?

I am using RealVNC client. The server is running IceWM.

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And you're also using the RealVNC server (just called "VNC Server") right? I am seeing the same issue, it's very annoying. I am using the official free RealVNC client and server. Also, since this is a very old question -- did you ever figure out a fix? –  Ricket Sep 25 '13 at 14:42
    
@Ricket No I was not using RealVNC server. When I use that then mostly it works, not always. RealVNC Server+Client, sometimes the copy and paste stops working absolutely. Then I go back to old non-RealVNC Server and it works. –  AppleGrew Sep 25 '13 at 17:32
    
I am also having the same issue, very annoying and slows down my work! Just in case if you find a fix, please post it here! –  rgamber Oct 23 '13 at 1:17

1 Answer 1

  1. Open ~/.vnc/xstartup
  2. Change the vncconfig line to include SendPrimary=0 (e.g. vncconfig SendPrimary=0 –nowin &)
  3. Restart your VNC sessions

How it works:

  • vncconfig is a program that manages shared functionality between the x11 server and your VNC session, most notably shared clipboard functionality. Without this running in the background, you cannot share a clipboard.
  • X11 maintains a concept of a “primary” buffer (for selected text) and a “clipboard” buffer
  • SendPrimary defaults to 1 (on) which instructs vncconfig to send the primary (selection) buffer to the clipboard buffer, in effect overwriting anything there
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