Error Cannot Open Display 0 Firefox
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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 error can't open display xclock voted up and rise to the top “Error: cannot open display: :0.0” while starting remotelly Firefox up vote 0 down vote favorite On my ubuntu 14.04 remote server, when I try to start Mozilla Firefox 32.0 from terminal, it through error as follow: $ firefox (process:6397): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed Error: cannot open display: :0.0 I have tried by changing display to 1, 10, error can't open display localhost 10.0 putty 11, 99, however, no luck! Banging my head from a week. Any help will be appreciable. firefox ssh share|improve this question edited Sep 13 '14 at 21:30 Braiam 38.9k1693154 asked Sep 13 '14 at 20:04 RAJ ... 106127 2 When you say remote server, are you connected via ssh? Yre you forwarding X? –Jan Sep 13 '14 at 20:15 Yes, I have ssh to my server. Over there I am trying to start firefox in a same way as I am doing on my local machine i.e. from terminal type firefox and hit ENTER –RAJ ... Sep 13 '14 at 20:24 @Jan Do I need to forward X? I am using watir & headless and watir opening firefox instance programmatically –RAJ ... Sep 13 '14 at 20:41 Never heard of watir but you need to forward X. –Jan Sep 13 '14 at 20:43 how can I do this @Jan? And why I need it only on remote machine. Local machine works without it –RAJ ... Sep 13 '14 at 20:44 | show 1 more comment 1 Answer 1 active oldest votes up vote 2 down vote accepted X11 forwarding needs to be en
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss http://unix.stackexchange.com/questions/108679/x-client-forwarded-over-ssh-cannot-open-display-localhost11-0/109322 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 Unix & Linux http://www.softpanorama.org/Xwindows/Troubleshooting/can_not_open_display.shtml Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join open display 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 X client forwarded over SSH “cannot open display: localhost:11.0” up vote 13 down vote favorite 2 I have enabled X forwarding on remote machine where SSH server is running: error can't open # grep -i forward /etc/ssh/sshd_config X11Forwarding yes # On local machine, I have started SSH client with -X flag which instructs the SSH server, running on remote machine, to set up a X-server proxy. In addition, it creates the $DISPLAY variable which points to this proxy and calls the xauth to install a proxy key which authenticates to this X-server proxy on remote machine: # echo "$DISPLAY" localhost:11.0 # xauth list | grep 11 A58/unix:11 MIT-MAGIC-COOKIE-1 39324086672d1ae35e373476c3891a77 # However, X clients on remote machine do not start properly: # wireshark (wireshark:10083): Gtk-WARNING **: cannot open display: localhost:11.0 # xterm Warning: This program is an suid-root program or is being run by the root user. The full text of the error or warning message cannot be safely formatted in this environment. You may get a more descriptive message by running the program as a non-root user or by removing the suid bit on the executable. xterm: Xt error: Can't open display: %s # X forwarding doesn't use xhost so at least this can be excluded. I tried to
Architecture X display manager Reinstallation of X11 and Gnome Desktop in RHEL "init: Id "x" respawning too fast: disabled for 5 minutes." Configuration Fonts in X Exporting_display Xdefaults Using xauth Too high refresh rate ot too high resolution XDMCP vnc Cygwin/X X11 security Tips History Humor Etc The X Window uses a client/server-architecture (and the server is your workstation to which you are exporting the session). It can use a number of transport protocols, including Unix sockets and TCP/IP sockets. Which mechanism is used, is determined by the format of the DISPLAY environment variable. When DISPLAY does not contain a hostname, e.g. it is set to :0, Unix sockets will be used. When it does contain a hostname, e.g. it is set to localhost:0.0, the X client application will try to connect to the server (even localhost as in the example) via TCP/IP sockets X has an authentication mechanism, which decides whether a client is allowed to connect to a server. As the Internet has become an increasingly hostile environment, it has become good practice to only open up services to the Internet when they are really needed. Recently in some Linux distributions, X is by default configured to listen only to localhost. That means that default X settings become more and more defensive and thus without tuning there are more and more reasons why remote communications attempts using X initially will fail. That's why the first time you try to run a remote X application on modern Linux distributions, it usually does not work. The most common error message by far is "Can't open display". In this case an X client application, for example xterm, reports an error Can't open display on startup, for instance xterm Xt error: Can't open display: localhost:0.0 The first thing to try is to ensure that you used a correct sequence of commands. One typical mistake is you use like xhost + on the client instead of the server (your workstation). If you have problems the first thing to do is to see the value of the variable DISPLAY on the client. If it is not set at all or set incorrectly you need to fix that, for example export DISPLAY=10.10.10.1:0.0 The second step to check is whether X11 server itself is accessible from the client. If firewall on the server is enables it can block X11 session. You better exclude firewall from the possible causes first. You can see this by using nmap. If port 177 (UDP) or port 6000 (TCP) are blocked you need to fix this first. The next step is to check /var/log/messages on the server. Often if you can't connect from the client /var/log/messages contain helpful messages ATTENTI