CentOS 5 :: New Installation - Cannot Open Display
Jun 28, 2011
I created a new virtual machine on my ESXi 4.1 host and had planned to install Centos 5.6 as the guest OS. The two ISOs required for the installation were stored on my local disk.
I powered on the VM, loaded the iso and managed to get the first installation screen until the test CD media screen. However after that, I was greeted with the following error message:
(could not upload a screen cap because of company's security reasons )
===============================================
Running anaconda, the CentOS system installer - please wait...
Probing for video card: VMware SVGA II Adapter
Attempting to start native X server
[Code].....
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Feb 15, 2016
I installed Open Office 4 on Debian 8 but when I run the program I get this error message.
root@localhost:/home/paul# openoffice4
No protocol specified
No protocol specified
/opt/openoffice4/program/soffice.bin X11 error: Can't open display:
Set DISPLAY environment variable, use -display option
or check permissions of your X-Server
(See "man X" resp. "man xhost" for details)
Open Office works fine when I run the command "startx" in the Konsole but so far I haven't been able to configure it.
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Feb 1, 2010
I had a fresh install of centos 5.4 x64 on my newly bought lenovo thinkstation D20, the installation went smoothly. after I finished adding users and reboot,I get pass the grub, starting the services, and then.. just blank screen, get nothing there and stuck, can't get into gnome, only option is to power off.the same happens if I install scientific linux, basically same with centos. I also can't boot the scientific linux live cd(the same thing happens, after starting the services, blank screen and stuck). however, I can boot Fedora live cd. but all I want is an EL5.
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Mar 23, 2011
I have just finished an install of Cent 5.5. I loaded up a trunk for a software application I want to compile on cent, but I cannot read the .cpp files. The issue seems to be with the file extension. If I change the extension to .txt, they open just fine. My .FOR, .FPP, and .DAT files display fine, but the .cpp and .h give me an error, "Couldn't display...". What is the problem here that won't let me open these files in gedit?
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Oct 12, 2010
I just upgraded from 10.04 to 10.10.After the upgrade I can't open any GUI programs running as root.
Or using gksu I just get the password prompt and then nothing happens.Same thing if running from the System->Administration menu.This is the same for all programs, not just Synaptic.Any idea of how I can debug this issue?
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Jan 26, 2009
I'm trying to install Fedora10 on my new desktop. It has Windows 7 beta on it and Vista. It starts up fine and I select install. For some reason my wired usb keyboard will not respond unless I press the caps lock button while it loads the begging. (I don't know if another button will work, ive only used the caps button since i can see the light come on) once it loads i skip the disk check and anaconda runs, i get the warning (mini-wm:1462): Gtk-WARNING **: cannot open display: :1 .
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Aug 27, 2009
I have recently resurrected an old X Windows application and I am having a problem getting a CentOS 5.3 client to run the application from a CentOS 5.3 host.
If I am logged in as root to the client side and ssh -Y over to the host, then run xclock, everything works just fine.
However, if after I ssh -Y over to the host, I then su - userx on the host, and then run xclock, I always get the "Can't open display" error.
I have tried:
Running xhost + on the client. doing the "xauth add display MIT-COOKIE xxxxxxxxxxxx" on the client & host, both as the root user, and as the userx. I can't seem to get a definitive answer as to which user and which machine (client/host) this needs to be run as.
Also, when you "xauth list $DISPLAY" you get nothing, (because it is either localhost:0.0 as root, or :0.0 as the su - user) you have to "xauth list", and then you get a list of cookies, but since the "echo $DISPLAY" doesn't match any of them, it is not obvious which one to use. Also, they are ALL "host/unix:X.0", so I assume they are all socket based, and as such I would assume that the their cookies would not be usable for remote TCP connections?
I also saw information about using netstat -anp to look for 60** LISTENERS, I could not find any on the client or host sides.
Nothing seems to work.
I heard about a program sux that is on ubuntu, but I could not find it for CentOS. Is there an equivalent on CentOS?
I have searched the web and found lots of info in forums all over the net with what appears to be the correct way to do this, still nothing appears to work.
What is confusing is that if the TCP LISTENERS were not there, I should not be able to get it to work as root either, so it must be in the transition of the su - userx.
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Jun 28, 2011
I have the following scenario that doesn't seem to work normally. I have a windows 7 pc from which I am using putty to connect to my other linux servers (all running redhat 5 and 6). So here is the scenario that works and one that does not work. And I'm trying to figure out the one that does not work. Scenario that works:
From windows 7 (putty) I ssh into Linux_Server_1.
echo $DISPLAY
localhost:10.0
I run xclock and I see it pop up on my windows 7 pc. I am using xming on windows 7 to help me populate the display from linux to windows. One that does not work:
From windows 7 (putty) I ssh into Linux_Server_1. Then from Linux_Server_1 I ssh into Linux_Server_2.
echo $DISPLAY
<no output>
I try to setup $DISPLAY with localhost:10.0 or 0.0 or even my windows 7 pc ip address:0.0 ....etc Then when I try to run xclock I doesn't work.
I get these error messages: Error: Can't open display: <ip of display>
Also as a side note all our Linux servers are sitting on one subnet. My pc is sitting on another subnet. I use vpn to connect to the subnet where the servers sit from my pc.
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Feb 18, 2011
We have a digital signage appliance built on SUSE 11.3 with a LAMP server that uses the flashplayer application to play a .swf file from localhost. It is a AOpen GP7A mini pc that has the nVidia drivers loaded. We have lots of customers that have been running the exact same system for over 6 months (we image the drive for each sale).
For some reason, my last customer is seeing the following problem shown below, and this linux configuration is way over my head. Everything else is working (local LAMP server is working, communicating with our production servers to get information works, etc). I have verified that it is screen 0 that is running (at least it shows with Ctrl-Alt-F7). I thought that it may have occurred because of updating the software with zypper up. I had the customer rebuild from the image being careful not to upgrade the software. The result was the same. The pc is a newer version compared to my bench pc, but there are multiple other customers running that same version just fine. So I am not sure if it is
The command is issued by a php script that is run in a root cron job. As I said, it works great on all other customer pc's including my bench system. I also tried to execute the command on a ssh terminal as the root user with the same result. I also upgraded my bench pc and it still worked properly.
The command being executed is sudo env DISPLAY=:0 XAUTHORITY=/home/svision/.Xauthority flashplayer http://localhost/flash/sign.swf &
the result (when run in terminal) is: No protocol specified (flashplayer:15077): Gtk-WARNING **: cannot open display: :0
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Jul 20, 2011
I have configured an instance in AWS EC2. I am trying to set the display back so I can run x apps. I login using ssh -xy -i...
export DISPLAY=XXX.XXX.X.XXX:0.0
echo $DISPLAY to verify
xhost +
xhost: unable to open display "XXX.XXX.X.XXX:0.0"
I have commented out nolisten tcp as suggested HERE I have modified /etc/gdm/custom.conf as suggested HERE Actually, the last suggested modifying /etc/gdm/gdm.conf, but that file didn't exist, so I added the line: DisallowTCP=false to /etc/gdm/custom.conf I rebooted, and still I get: xhost: unable to open display "XXX.XXX.X.XXX:0.0"
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Aug 20, 2010
I've just installed xterm, ant trying to run it from my windows machine using ssh. I have X11Forwarding yes on /etc/ssh/sshd_config when I use, MobaXterm, np, I can use xterm after I log ssh -X xxx
but when I use Cygwin, and do ssh -X xxx, and then xterm, I have: xterm XT error : Can't open display: xterm: Display is not set
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Jun 8, 2009
i didnt find a solution to a display problem im having. my server mobo is an asus k8n-dre with built in video. after the install(using built in video) the screen dosnt display fully as in black sections on the left and top of the screen. from the searching i did i found something about an "xrandr" command that would let me change the video settings but it didnt do anything with the black areas when i tried it. i also have a nvidia geforce 9500gt video card so i changed the jumper to boot from it and tried again. the black sections are still there but the centos display covers much more of the screen now. theres still about a third of an inch gap on the left hand side and about 1/4 of an inch on the top. ive also tried updating the software to see if it may be a driver issue but no luck. anyone know how or if it can fit to full sceen? the screen displays up to 1440x900 if im not mistaken but with the built in video it gave me lots of display options including the 1440x900. after changing to the nvidia card it only shows 800x600 and 640x480.
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Sep 26, 2010
Ok For some reason I open my ports in security and firewall. I open ssh and other ports and port 7001 for example but when I go to check to see if they are open or try to connect to them. It shows that they are still closed. I am using - [URL] Also yes my ports are open on my router. I know my router works fine with opening ports because I have shoutcast setup on another computer with xp that is currently running. I am willing to pay for who can ever get this fixed for me...
I open the ports in graphical mode.
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Jan 30, 2011
We're running Ubuntu 10.4 on our server. When I ssh there, I can open xclock and emacs and the GUI appears on my desktop.
But when I try to open evince, I get the following error:
Code:
$ evince
X11 connection rejected because of wrong authentication.
Cannot parse arguments: Cannot open display:
[Code].....
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Aug 17, 2009
As root when I try a program it often say it cannot open display How get round?
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Feb 7, 2011
Just finnished a fresh install of Squeeze. In a console, as root, when i type gedit i get: # gedit No protocol specified
(gedit:24284): Gtk-WARNING **: cannot open display: :0.0
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Jan 14, 2011
I am trying to run a java .class file by double-clicking it. So far my attempts at running it have been successful, but I don't' know how to keep the display open to see what the output is.
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May 29, 2011
For example, the gparted application menu item doesn't work; using it means that there is almost no filesystem support. The only way to get it to work is to open a terminal, run 'su -', and then open it from there.As another example, I tried creating a nautilus script to open files as root with a command like this:
Code:
for uri in $NAUTILUS_SCRIPT_SELECTED_URIS; do
gnomesu -c "gnome-open '$uri'"
done
When I try using it, it just fails. Typing out the command in the terminal gives this (tested on a text file):
Code:
No protocol specified
(gedit:13672): Gtk-WARNING **: cannot open display: :0
I'm pretty sure the problem is that it's granting privileges, but not using the full root environment, or something along those lines.
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Jan 13, 2010
When I become root and try to run gedit, I get the error:
No protocol specified
(gedit:219: Gtk-WARNING **: cannot open display: :0.0
This does not happen from my user profile....xhost + actually solves the issue....so I guess I just need to add the host root to the list of hosts allowed to access the x server...
I try xhost +root......but that does not work....
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Dec 27, 2010
I need to get gksu to run programs. The goal is to be logged in as user1 and run firefox or google-chrome with user2 's settings stored in their own home directory. I'm trying the following with no success:
Code:
user1@hostname:~$ su user2
Password:
user2@hostname:/home/user1$ google-chrome
No protocol specified
(google-chrome:17144): Gtk-WARNING **: cannot open display: :2.0
Code:
user2@hostname:/home/user1$ firefox
No protocol specified
No protocol specified
Error: cannot open display: :2.0
Code:
user2@hostname:/home/user1$ gedit
No protocol specified
(gedit:17162): Gtk-WARNING **: cannot open display: :2.0
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Aug 14, 2010
i have just installed a redhat linux entprise 5 on my machine. I am trying to install a software and when i run the #install.ksf , my installation gets aborted and my install.log file shows this,
Error: Can't open display !
Environment variable 'DISPLAY' must be defined.
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May 12, 2010
Im trying to access gparted, i get an error
Quote:
(gpartedbin:4918): Gtk-WARNING **: cannot open display:
I am connect via vnc if this helps.
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Dec 1, 2010
Im using the Redhat 5, when m trying to connect from X-start it showing error:
Can't open display: localhost:0.0
Where as /etc/ssh/sshd_config settings are correct
Also ssh is running
$DISPLAY is set to localhost
still it is not started any x-service
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Mar 31, 2011
I'm trying to connect to my linux server but I'm having some major problems. The server had OEL 5 installed and my local pc is running Windows XP. I'm using PuTTy to connect to the server with Xming running on my loacl machine. I login as root and run the following command - export DISPLAY={ipaddress}:0.0I then run xclock and get the following error - Xlib: connection to "{ipaddress}:0.0" refused by serverXlib: No protocol specifiedError: Can't open display: {ipaddress}:0.0The strange thing is that on my bosses pc (who has got almost the exact same setup ie. PuTTy & Xming) is works perfectly.
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Nov 22, 2010
i just downloaded Nethack from [URl], and moved the extracted files to /usr/games. Then i changed the permissions in /usr/games/lib/nethackdir so i could access the lib files.
Nethacks runs in X, and it runs in terminal when im root. But for some strange reason it does not run in CLI when im not root, i get the message "Error: Can't open display:".
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Jan 14, 2010
When trying to run X apps from terminal command line I getCannot open X display `:0.0'error.I tried export DISPLAY=0.0What do I need to do to permently fix this problem?
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Jan 30, 2011
I was running Ubuntu 10.10 Maverick with no big problems till last 3 days ago.
The update manager checked some updates to install and after installing them, I had no graphic desktop any more. Only the command line.
I tried to recover it by starting the X again.
Code:
But did not worked
So I've tried to install the nVidia driver again. I looked at nVidia Linux drivers site for how to do it and Ubuntu documentation and when I tried to
Code:
I just could not use gedit. It cannot open display. I googled for three days but could not solve it. I found some similar answers here at LQ but none was similar to my situation or worked even when I tried.
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Sep 25, 2010
I was trying to remotely log in to my desktop which uses 11.3 from my laptop via ssh. For some reason I get an empty field for the command echo $DISPLAY. and as a result an xclock command results in error: can't open display. 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. I was wondering what' the solution to this. I checked the /etc/ssh/sshd_config file and ssh_config file both have X11 forwarding on. Can anyone with more experience out there give me any ideas?
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Apr 8, 2010
I am still learning the ropes on Ubuntu server. I am trying to set up samba, but when I use the "gedit" command, I get this error:
GTK-WARNING **: cannot open display
I had installed the gedit command by using apt-get and aptitude, but still no luck. I am using virtualbox to test Ubuntu Server 9.10.
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Apr 6, 2010
When I attempt to use Putty for xterm (to run DBCA for Oracle) I check x11 and put my IP Address in the Display field of putty. However, when I then try to execute ./dbca I receive the following:
Xlib: connection to "localhost:10.0" refused by server
Xlib: PuTTY X11 proxy: wrong authentication protocol attempted
Error: Can't open display: localhost:10.0
I notice the following when logging in to the server as well.
Last login: Fri Mar 19 13:51:19 2010 from 10.47.48.33 /usr/X11R6/bin/xauth: error in locking authority file /home/oracle/.Xauthority. These are the same steps I take successfully on all the servers. The above file exists on the servers I can initiate the GUI, but not on <server1>.
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