Complete sshd_config below: Reply. Though it says application started when I run this bash script doesn't show up any GUI. Thank you! Categories LINUX Tags can't open display, cannot open display: :0.0, XCLOCK not working with oracle user Post navigation E: package has no installation candidate how to: convert pfx to jks Linux OS - Version Oracle Linux 5.0 and later: Error "Can't open display: localhost:x.y" When Running xclock on Xming 127.0.0.1 localhost.localdomain localhost [root@localhost etc]# cat hosts.allow # # hosts.allow This file describes the names of the hosts which are Posted on December 26, 2012 Less than a 1 minute read. If you didn't delete it, you can use it to update the entire Cygwin suite, and/or to choose the parts of Cygwin you want installed. ERROR MESSAGE FOR GEDIT: (gedit:3058): Gtk-WARNING **: cannot open display: localhost:10.0 Here is what I've tried so far and please let me know if I'm missing something with the X11 set up here. The following procedure allows a sudo user to use the ssh based X11 tunnel. This discussion is archived. Error: Can't open display: localhost:10.0 You haven't allowed X sessions on the local system by running "xhost +", and until you can run xclock, things won't proceed so there's not much point in going further. I started xclock to test; it complained that DISPLAY is not set: Error: Can't open display: I manually set export DISPLAY=franklinyu-windows:0.0, then xclock said. ERROR MESSAGE FOR XCLOCK: Error: Can't open display: localhost:10.0 ERROR MESSAGE FOR MATLAB: Warning: Unable to open display 'localhost:10.0'. Whenever I try to run an application, like xterm & or xclock I get the same error: PuTTY X11 proxy: Unsupported authorisation protocol Error: Can't open display: localhost:10.0 I've combed the Internet and found a number of other people reporting the same … Posted by yanb at 1:06 PM. – goldilocks ♦ Jun 1 '15 at 19:55 February 26, 2020 at 12:48 am After I open this program for a while, and try to exit, it informs me that certain number (4 to 8) clients connected. xclock command gives Can't open display output [root]# xclock . I can start xclock on another system with X11Forwarding no in sshd_config and without using -X, as long as I set the DISPLAY variable correctly. However, in some cases you may need to start a graphical application like nedit or firefox in a sudo or su context. Things were working fine previously, so I assume this is something specific to 10.5.7. here are my parameters: windows 7 laptop: putty for simple ssh connection => OK putty param 'enable X11 forwarding' => checked putty param 'X display location' => localhost:0.0 aws config: VPC with subnet allowing SSH connections => tested successfully sudo cat /etc/ssh/sshd_config |grep -i x11 #X11Forwarding no Can't seem to launch xeyes as a test despite having X11 installed and both export DISPLAY=:0.0 and export DISPLAY=:0 do not work. But i can't make it work ??!! I'm using SGD EE4 on Fedora 3 and cannot start any X application through TTA (not even default xclock). PuTTY X11 proxy: wrong authorisation protocol attempted Error: Can't open display: localhost:X.Y. ForwardX11 yes is set on each machine. ... Run xclock, and you should see the clock on your Windows box. X authentication is based on cookies, so it's necessary to set the cookie used by the user that initiated the connection. I'm pretty sure Xming isn't the problem, since if I manually change the DISPLAY variable to "[my windows machine IP]:0.0", I can run xclock and see it appear. Quick Solution: Login directly with user on which you want to use xclock. bash-3.2# xterm xterm Xt error: Can't open display: %s. When I remote login to another mac, all running 10.5.7, I can't run a remote X11 window (e.g., xeyes). Resolve error Can’t open display on AIX. Share to Twitter Share to Facebook Share to Pinterest. I can run xclock or xterm on the RHEL4 linux computer. Re: [Solved] Xforwarding with ssh: Can't open display localhost 10.0 I always had to do 'xhost +' w/out quotes on the client machine. I just get the standard error: root@localhost:~# export DISPLAY=:0.0 root@localhost:~# xeyes Error: Can't open display: :0.0 I am trying to run xclock on newly built solaris box[Solaris 10 11/06 s10x_u3wos_10 X86] - These are the steps I followed: # DISPLAY=localhost:0.0 # export DISPLAY # xclock xclock: not found # cd /usr/openwin/bin # ./xclock Error: Can't open display: localhost:0.0 # Please suggest, what am i doing wrong? hi, I'm trying to run a bash script that starts GUI. From what I can see, it should be working. Therefore, I followed these instructions (installed Xming, connecting via PuTTY) and advice from linked articles (not using PuTTY), and got nowhere. I tried to set it to localhost:10.0 and I get: Error: Can't open display: localhost:10.0 I've tried :0.0 and I get: Invalid MIT-MAGIC-COOKIE-1 keyError: Can't open display: :0.0 ssh used to work about a week ago before I performed various security updates. Solution: Run: xauth list as root [root@localhost … Email This BlogThis! I can start Xclock and it's displayed immediately on my Windows laptop. [wasadm@localhost eclipse]$ xclock X11 connection rejected because of wrong authentication. Try that and see if that helps. bash-3.2# sshd -version sshd: illegal option -- v Don't set DISPLAY.Never set DISPLAY over SSH (including PuTTY): if the SSH forwarding is working, the environment variable will be set correctly. However, running xclock or xterm on the HP-UX B.11.23 U ia64 computer has these errors: bash-3.2# xclock Error: Can't open display: Error: Couldn't find per display information. To get access to the X client applications such as system-config-date, xclock, vncviewer we need to export the DISPLAY settings of a remote host to the local server. KiTTY X11 proxy: Unsupported authorisation protocol Error: Can't open display: localhost:10.0 su open a new session and it does not transfer the session key, so you'll need to manually add the MIT-MAGIC-COOKIE-1 key after the su command. If the variable isn't set, you aren't getting X forwarding. Re: xhost + error: unable to open display Hi Jagadesh, xhost + can only running on XWindows mode so use Telnet application that support XWindows such as ReflectionX from WRQ inc.After install that telnet software you can run xhost + without any difficulties. xclock command gives Cannot convert string output [root]# xclock I can't promise it isn't something else to do with the sshd config, or the X server config, but this is not the issue. I can run xclock or xterm on the RHEL4 linux computer. If you still get the “cannot open display” error, set the DISPLAY variable as shown below. Error: Can't open display: localhost:10.0-> probably you are missing xorg-x11-xauth fix it by [root]# yum install xorg-x11-xauth. I have heard that I can use "X11 forwarding" (whatever that means) to display graphics generated on a remote server on my local machine. -rw-r--r-- 1 root root 146 Oct 10 15:00 hosts [root@localhost etc]# cat hosts # Do not remove the following line, or various programs # that require network functionality will fail. If you set localhost:0 as "X display location" option in Putty, you should also check that Xming is running on display :0.Xming and Putty display option must have the same value. Running xclock gives me the following error: "Error: Can't open display: localhost:10.0". X11-forwarding mechanism does not allow anyone to use the open display. Follow RSS feed Like The application launch dialog's Launch Details says: Xlib: connection to "localhost:10.0" refused by server Xlib: Invalid MIT-MAGIC-COOKIE-1 key Error: Can't open display: localhost:10.0 Connection to closed. DISPLAY variable was set, ~/.Xauthority file was owned by user, permissions was correctly set. You will not be able to display graphics on the screen. appuser@kerneltalks@ xclock MobaXterm X11 proxy: Authorisation not recognised Error: Can't open display: localhost:10.0 Sometimes these errors show up when you switch user from the root account or any other account. I tried to set it to localhost:10.0 and I get: Error: Can't open display: localhost:10.0 I've tried :0.0 and I get: Invalid MIT-MAGIC-COOKIE-1 keyError: Can't open display: :0.0 ssh used to work about a week ago before I performed various security updates. Authorization required, but no authorization protocol specified Error: Can't open display: franklinyu-windows:0.0 John. I can ssh -X to a RHEL4 linux and a HP-UX B.11.23 U ia64 computer from a FC6 linux computer. Re: xterm Xt error: Can't open display: %s urgent When you clicked the "install Cygwin/X from here", you received the setup.exe for the Cygwin package. bash-3.2# xterm Error: Can’t open display: localhost:10.0 RESOLUTION: [a] You have done an su or a sudo to a switch user, without copying the correct MIT-MAGIC-COOKIE authentication. I have been testing mostly by trying to run xclock. The Red Hat Customer Portal delivers the knowledge, expertise, and guidance available through your Red Hat subscription. 7 comments: hi, i´m doing every step but when i run the xeyes comand in bash it says: Error: Can’t open display: localhost:0.0 maybe i missed somethig, please help. Doesn't matter if I log in with -X or -Y. I get the "Error: Can't open display" message. Error: Can’t open display: localhost:10.0. 3 Replies Latest reply on Oct 13, 2009 11:10 AM by Deepak_DBA Latest reply on Oct 13, 2009 11:10 AM by Deepak_DBA $ export DISPLAY='IP:0.0' After opening ssh connection to the remote host as explained above, you can open any GUI application which will open it without any issue. However, running xclock or xterm on the HP-UX B.11.23 U ia64 computer has these errors: bash-3.2# xclock Error: Can't open display: Error: Couldn't find per display information. How to setup X11 forwarding in Putty using Xming (1) Download and Install Putty on your PC (2) Download and Install Xming on your PC (3) Start Xming server (4) Save the server you want to connect to in Putty in saved sessions (5) Load the server you want to connect in putty (6) In… This bash xclock error can t open display localhost 10 does n't matter if I log in with -X or -Y. get. On the xclock error can t open display localhost 10 linux computer install xorg-x11-xauth -Y. 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