Could Not Open Display Error Code
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Cannot Open Display Ubuntu
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a remote server, I'm getting the "cannot open display:" error, as shown below. How do I fix this? For example, while launching the gedit on remote server, I got the following message. (gedit:3658): Gtk-WARNING **: cannot http://www.thegeekstuff.com/2010/06/xhost-cannot-open-display/ open display: I get similar message when I try to open any GUI application. For example, http://askubuntu.com/questions/438451/could-not-open-display-null-error-how-can-i-fix-this launching Oracle Installer on remote server also gives the "cannot open display" error. Answer: You can fix the "cannot open display" error by following the xhost procedure mentioned in this article. 1. Allow clients to connect from any host using xhost+ Execute the following command to disable the access control, by which you can allow clients to connect from any host. $ open display xhost + access control disabled, clients can connect from any host 2. Enable X11 forwarding While doing ssh use the option -X to enable X11 forwarding. $ ssh username@hostname -X Enable trusted X11 forwarding, by using the -Y option, $ ssh username@hostname -Y 3. Open GUI applications in that host After opening ssh connection to the remote host as explained above, you can open any GUI application which will open it without any issue. If you still error can't open get the "cannot open display" error, set the DISPLAY variable as shown below. $ export DISPLAY='IP:0.0' Note: IP is the local workstation's IP where you want the GUI application to be displayed. Tweet >Add your comment If you enjoyed this article, you might also like.. 50 Linux Sysadmin Tutorials 50 Most Frequently Used Linux Commands (With Examples) Top 25 Best Linux Performance Monitoring and Debugging Tools Mommy, I found it! – 15 Practical Linux Find Command Examples Linux 101 Hacks 2nd Edition eBook Awk Introduction – 7 Awk Print Examples Advanced Sed Substitution Examples 8 Essential Vim Editor Navigation Fundamentals 25 Most Frequently Used Linux IPTables Rules Examples Turbocharge PuTTY with 12 Powerful Add-Ons Tagged as: export DISPLAY, xhost+ Command, xhost+ Examples { 11 comments… add one } hari June 25, 2010, 9:10 am is # xhost - will block from using X server from remote login to this system? for ex: system1 # xhost - system2 # ssh -X system1 system1 # gedit new.txt it opening a new file, it not blocking X server. Link Jeff June 25, 2010, 9:39 am love this site, love these articles but xhost? pfft! hari, when you're X11 forwarding, you aren't using xhost for X authentication. the client is using xauth authentication mechanism. the server and client share a secret "cookie"(xauth list to see yours)…. google xauth howto comes up with a l
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top “Could not open display `(null)'” error. How can I fix this? up vote 4 down vote favorite I'm trying to run an appliaction, but when I run it I get a Could not open display `(null'). Error. Why is this? Specifically I was trying to run scratch (which I installed via aws): root@ip-10-251-56-90:/usr/bin# ./scratch Executing: /usr/lib/squeak/4.4.7-2357/squeakvm -encoding UTF-8 -vm-display-x11 -xshm -plugins /usr/lib/scratch/plugins/:/usr/lib/squeak/4.4.7-2357/ -vm-sound-ALSA /usr/share/scratch/Scratch.image Could not open display `(null)'. display aws share|improve this question edited Mar 30 '14 at 18:26 Seth♦ 22.6k1687136 asked Mar 24 '14 at 9:17 user261504 2112 add a comment| 1 Answer 1 active oldest votes up vote 7 down vote Errors like this mean that you are running a program that needs a graphical display and it can't find one. GUI programs connect to the display defined by the $DISPLAY environmental variable. The general format of the error is Could not open display $DISPLAY Since, in your case, the error says (null), this means that $DISPLAY is not set. You therefore need to: If you are logging in to a remote machine using something like ssh, you will need to export the $DISPLAY of your local machine and tell the remote computer to display GUI program