I used to access a remote system via VNC viewer, but when I copy some text from the remote system and paste it in my text editor(local system), nothing happens. Do I need to install any additional packages to achieve this task?

There is no such option found in the Real VNC properties.


I just get the following output:

karthick@karthick:~$ vncconfig         
No VNC extension on display :0.0


karthick@karthick:~$ vncserver

Warning: karthick:1 is taken because of /tmp/.X1-lock
Remove this file if there is no X server karthick:1

Warning: karthick:2 is taken because of /tmp/.X2-lock
Remove this file if there is no X server karthick:2

New 'X' desktop is karthick:4

Starting applications specified in /home/karthick/.vnc/xstartup
Log file is /home/karthick/.vnc/karthick:4.log

karthick@karthick:~$ vncconfig -display :1 
vncconfig: unable to open display ":1"

enter image description here

  • 1
    This is turning into a bit of a mess. Can you state somewhere what the setup is. What OS is the client? What OS is the server? What client and server software are you using on each?
    – Oli
    May 27, 2011 at 15:25
  • Client runs windows XP and the server runs ubuntu 10.10. And the client runs Real VNC and the server runs vncviewer. Do you need anyother information ?
    – karthick87
    May 27, 2011 at 15:31
  • vncviewer is not a VNC server (the clue's in the name :P)
    – Oli
    May 27, 2011 at 15:50
  • I have already installed vnc4server too.
    – karthick87
    May 27, 2011 at 16:07

17 Answers 17


There will be a .vnc directory in your home folder. In this directory there will be few files named like <computer name>:<number>.extension
For example my laptop contains following two files in .vnc directory.


The :1 in the above file names shows that the vnc server is running on display :1.

Now connect to your VNC server and from the connected session run vncconfig as follows:

vncconfig -display :1  

This will show a small window with clipboard related options. Check all the options and dont close the window. Now you should be able to copy paste from/to remote system.

  • 3
    karthick@karthick:~$ vncconfig -display :1 vncconfig: unable to open display ":1"
    – karthick87
    Jun 7, 2011 at 10:59
  • @karthick87: what command are you using to run vnc server? have you checked .vnc directory in your home folder? does it contain files like karthick:1.pid?
    – binW
    Jun 7, 2011 at 11:14
  • Pls see the updates in my question..
    – karthick87
    Jun 7, 2011 at 13:46
  • 5
    For people reading this answer DON'T CLOSE THE WINDOW is the keyword. I missed that the first time and was unable to achieve the desired result. Apr 13, 2018 at 6:34
  • 4
    I get No VNC extension on display :1
    – Elia Weiss
    Aug 5, 2018 at 12:05
  1. Install:

    sudo apt-get install autocutsel
  2. Run vi /home/b37399/.vnc/xstartup and add this line:

    autocutsel -fork

    like this:

    xrdb $HOME/.Xresources  
    autocutsel -fork  
    startxfce4 &  
  3. Restart vncserver

  • 1
    autocutsel worked for me, but not the "vncconfig -nowin &" or "vncconfig -display :1"
    – Mithun B
    Nov 22, 2017 at 7:50
  • 1
    not working on debian 8.10
    – user889030
    Jun 23, 2018 at 16:09
  • 2
    this works for me on Debian 9 Aug 26, 2018 at 16:34
  • 1
    As vncconfig appears to only be available with TigerVNC setups, the autocutsel trick helped - thanks!
    – ckujau
    Oct 16, 2018 at 1:29
  • 1
    The fix applies to both copying to and from the remote system. Tested on Mac OS High Sierra / Ubuntu 18.04 Oct 24, 2018 at 18:13

I use the following line in my login-script:

vncconfig -nowin&

Hope it works for you!?

  • 1
    Do you run this before vnc4server or after?
    – kurdtpage
    May 27, 2018 at 23:45

It depends on the VNC client that you are using. If you are using RealVNC then open the VNC Viewer Properties dialog and, on the Inputs tab, turn on Share clipboard with VNC Server.

Try this. Connect using vncviewer and run vncconfig within the remote window, check the options regarding the clipboard and then try.
enter image description here

  • Pls see my updates in the question.
    – karthick87
    May 17, 2011 at 12:17
  • @karthick87: you are looking at VNC server's properties. Go to VNC viewer's Properties dialog
    – binW
    May 17, 2011 at 12:42
  • No its not there in VNC viewer properties.Look @ the snapshot pls.
    – karthick87
    May 17, 2011 at 12:54
  • @karthick87: I have updated the answer. Plz try the vncconfig method. I believe it will work because it has always worked for me.
    – binW
    May 18, 2011 at 6:40
  • Do you want me to type vncconfig in command prompt ?
    – karthick87
    May 18, 2011 at 7:07

I use Remote login with vnc-ltsp-config with GNOME Desktop Environment on CentOS 5.9. From experimenting today, I managed to get cut and paste working for the session and the login prompt (because I'm lazy and would rather cut and paste difficult passwords).

  1. Created a file vncconfig.desktop in the /etc/xdg/autostart directory which enabled cut and paste during the session after login. The vncconfig process is run as the logged in user.

    [Desktop Entry]
    Name=No name
    Exec=vncconfig -nowin

  2. Added vncconfig -nowin & to the bottom of the file /etc/gdm/Init/Desktop which enabled cut and paste in the session during login but terminates after login. The vncconfig process is run as root.

  3. Adding vncconfig -nowin & to the bottom of the file /etc/gdm/PostLogin/Desktop also enabled cut and paste during the session after login. The vncconfig process is run as root however.

  • 1
    This seems to be the only solution where copy-and-paste is enabled at startup/boot/login and in the background. I'm running Red Hat Enterprise Linux 5 and could not get @Clausi's answer to work. Jul 26, 2013 at 21:19
  • At the end of the day, I ditched VNC for NoMachine NX.
    – Alton XL
    Sep 26, 2013 at 18:46

I tried all the above suggestions with no luck.

I eventually solved it by replacing the vnc server from tightvncserver to vnc4server

On any manner, make sure that under ~/.vnc/xstartup you have the line

vncconfig -iconic &
  • 1
    This is the only suggestion that worked for me, thanks! I was also using tightvncserver, and I had autocutsel -fork in my xstartup. But the clipboard was only working from remove to local machine (not the other way around). I installed vnc4server and added vncconfig -iconic & right after autocutsel -fork. Clipboard is now working bidirectionally!
    – Maghoumi
    Sep 22, 2021 at 17:01

Try using www.letscopypaste.com or pastebin.com .
They offer simple to use clipboard capability.


Using tightvnc (with the command: vncviewer) on Puppy Linux, I have to press F8 in the remote window to bring up the VNC menu. The VNC menu has entries for "Clipboard: local -> remote" and "Clipboard: local <- remote". I have to copy some text, use either of those entries, and then paste on the other system. I don't know if this is related to your particular problem, but it does behave like the symptoms you described if I don't use the menu.

  • Thank you. vncconfig did nothing this time, but I remember that adding it at the xstartup you can enable that feature. But using F8 I can enable or disable easily the direcction of the data, enabling only Remote->Local and never the opossite.
    – m3nda
    Jan 28, 2016 at 10:07
  • in my linux setup, I menu pop up but either copying didnt worked :( thanks for this menu hint, I wonder how did you find, there in the help menu they didnt show
    – nerkn
    Dec 6, 2018 at 10:29

In a new terminal window, I used the command vncconfig, the command keeps running and you can use the copy and paste functions in other windows or terminals.


The VNC viewer you are using has to support this feature otherwise you're just copying it localy on the remote system.


One more cause for this is multiple instances of vncconfig instances running conflicting with each other. In my case i had custom vncserver setup, but the vncconfig started as part of the system boot conflicted with the custom vncconfig setting.

To resolve this kill unwanted vncconfig instances running.

To get the list of vncconfig instances currently running:

ps -ef | grep vncconfig

To kill :

kill -9 <process_id>


Some commentary on your problem: RealVNC's is proprietary and it's clipboard support may be entirely incompatible with tightvncserver. I've used both, together, in the past but I don't remember 100% if clipboard sharing worked bettween them. I do know for sure that RealVNC-server paired with RealVNC-viewer did accommodate clipboard sharing; but RealVNC-server is not free (as in $$s)

You might try:

enter code hereThis below config works perfectly fine for Ubuntu 16.04 and Ubuntu 18.04 LTS.

Please freshly copy-paste/replace the below config to ~/.vnc/xstartup and restart your vnc.  It will definitely work.  


# Uncomment the following two lines for normal desktop:
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
autocutsel -fork  
vncconfig -iconic &
vncconfig -nowin &
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-window-manager &

gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &

The only way I could fix this is to install clipIt.

Without ClipIt, I could only paste from VNC client to Console.

ClipIt took care of copying clipboard information to the GDE3 clipboard, so that I could do an insert in Terminal for example.


For me, I have tried all the solutions above but none worked. The real solution for me is to kill the process klipper. Not sure why but this process is the root cause of preventing me from copy and paste from windows to VNC.

ps aux|grep klipper
kill -9 <klipper_pid>

Different vncservers locate their configurations in different directories. In case you can't change your configuration despite adding autocutsel -fork in ~/.vnc/xstartup, you could also probably run find if /etc/X11/Xsession exist, if so, you can simply add autocutsel -fork and restart your vnc session. It works for me.


It can be sketchy, but has successfully worked for me in a pinch. Use Microsoft PowerToys Text Extractor. I can vouch for a ~47 character token with only one obvious 0 to O error at the very end of the string.

Screenshot of tool description and hotkeys

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