Java Can t connect to X11 window server using localhost 10 0 as the value of the DISPLAY variable

Question

I have a script using java to connect to display X11 in the port 10 0 at localhost  but i get always this error  java lang InternalError  Can t connect to X11 window server using  localhost 10 0  as the value of the DISPLAY variable      at sun awt X11GraphicsEnvironment initDisplay Native Method      at sun awt X11GraphicsEnvironment access 200 X11GraphicsEnvironment java 62      at sun awt X11GraphicsEnvironment 1 run X11GraphicsEnvironment java 178      at java security AccessController doPrivileged Native Method      at sun awt X11GraphicsEnvironment  lt clinit gt  X11GraphicsEnvironment java 142      at java lang Class forName0 Native Method      at java lang Class forName Class java 186      at java awt GraphicsEnvironment getLocalGraphicsEnvironment GraphicsEnvironment java 82      at sun awt X11 XToolkit  lt clinit gt  XToolkit java 112      at java lang Class forName0 Native Method      at java lang Class forName Class java 186      at java awt Toolkit 2 run Toolkit java 849      at java security AccessController doPrivileged Native Method      at java awt Toolkit getDefaultToolkit Toolkit java 841      at ij io Opener openJpegOrGif Opener java 367      at ij io Opener openImage Opener java 220      at ij io Opener openImage Opener java 249      at ij io Opener open Opener java 116      at ij IJ open IJ java 1112      at ij macro Functions open Functions java 2006      at ij macro Functions doFunction Functions java 129      at ij macro Interpreter doStatement Interpreter java 205      at ij macro Interpreter doBlock Interpreter java 515      at ij macro Interpreter runUserFunction Interpreter java 278      at ij macro Interpreter getFactor Interpreter java 1200      at ij macro Interpreter getTerm Interpreter java 1162      at ij macro Interpreter getExpression Interpreter java 1145      at ij macro Interpreter getBooleanExpression Interpreter java 881      at ij macro Interpreter getLogicalExpression Interpreter java 857      at ij macro Interpreter getBoolean Interpreter java 850      at ij macro Interpreter doIf Interpreter java 829      at ij macro Interpreter doStatement Interpreter java 217      at ij macro Interpreter doBlock Interpreter java 515      at ij macro Interpreter doStatement Interpreter java 241      at ij macro Interpreter doIf Interpreter java 831      at ij macro Interpreter doStatement Interpreter java 217      at ij macro Interpreter doStatements Interpreter java 195      at ij macro Interpreter run Interpreter java 99      at ij macro Interpreter run Interpreter java 65      at ij macro Interpreter run Interpreter java 75      at ij plugin Macro Runner runMacro Macro Runner java 127      at ij plugin Macro Runner runMacroFile Macro Runner java 112      at ij IJ runMacroFile IJ java 103      at ij ImageJ main ImageJ java 517    I have tried everything to solve this problem like    export DISPLAY  10 0 export DISPLAY localhost 10 0   I tried also the port 0 0 but i get always the same error  after trying xhost   xhost  local all xhost   unable to open display    xhost   unable to open display   10 0    how can i fix this i thought that the X Server is not runing so i tried startx its says its runing at that port   my system is Ubuntu server edition 10 04

User · Answer

First do this either in Build Phase of Jenkins if using or set in  etc profile   unset DISPLAY export DISPLAY  0   then set this property either in java code or using maven  -Djava awt headless false

User · Answer

In my case there was no space left in my machine and I faced the same issue  Some times it could be the space issue  Check the space in your Linux Unix environment and make sure your machine have enough space

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If you are trying to export display using su and it still doesn t work  This is what worked for me  Try X11 forwarding for sudo users   Connect the remote host using the -X option with ssh     ssh -X root remote-host   Now list the coockie set for the current user     xauth list  DISPLAY     node01 thegeekdiary com unix 10  MIT-MAGIC-COOKIE-1  dacbc5765ec54a1d7115a172147866aa   echo  DSIPLAY     localhost 10 0   Switch to another user account using sudo  Add the cookie from the command output above to the sudo user     sudo su -  user    xauth add node01 thegeekdiary com unix 10  MIT-MAGIC-COOKIE-1  dacbc5765ec54a1d7115a172147866aa   Export the display from step 2 again for the sudo user  Try the command xclock to verify if the x client applications are working as expected     export DISPLAY localhost 10 0   source  https   www thegeekdiary com how-to-set-x11-forwarding-export-remote-display-for-users-who-switch-accounts-using-sudo

User · Answer

If you start application on a remote server while logged in by ssh then another way would be to start ssh with -x parameter or add ForwardX11 no in your  etc ssh ssh config  In this case ssh will not create environment variable DISPLAY

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This will fix it    usr bin java -Djava awt headless true  Your program

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I just didn t log out of root before running   studio sh All set

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I had the same issue on the Linux server I was working on  Connecting java to a X11 display worked on the head node  but not on any other  After contacting the administrator  it turned out that the current version of our job-scheduling system  SLURM  did not support X11 forwarding  They had to update SLURM  newer versions of SLURM support it  for it to work

User · Answer

I think you are working in sudo mode Please checkout to the user mode and try again

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After several days of futile effort of installing glassfish on raspberry pi 2 with headless fedora 22  Below worked for me without a hitch   unset DISPLAY java -Djava awt headless true -jar glassfissh-installer-v2ur2-b04-linux jar   got my help from here

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If you re triggering your code from Jenkins  enabling the option  Start Xvfb before the build  and shut it down after  might help  It helped me

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In my case this error was not related to the DISPLAY port  I was trying to load an XML into Windchill  a PLM-software  and received only the above error on the terminal  In a logfile I found the report that my XML-file was corrupt  Maybe someone has a similar problem and can use this answer

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In case anybody trying to run the automated unit tests via maven-surefire-plugin on CI jenkins      and getting the above mentioned error  be sure to update your surefire plugin configuration     lt plugin gt        lt groupId gt org apache maven plugins lt  groupId gt        lt artifactId gt maven-surefire-plugin lt  artifactId gt        lt version gt   maven-surefire-plugin version  lt  version gt        lt configuration gt               lt systemPropertyVariables gt                   lt java awt headless gt true lt  java awt headless gt               lt  systemPropertyVariables gt         lt  configuration gt   lt  plugin gt

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the only way i got it to work was running the script with a template  e g  sudo   glassfish-3 1 2 2-unix sh -s template  This installs Glassfish in Silent Mode  http   docs oracle com cd E18930 01 html 821-2427 ghmva html

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For me none of the above worked  but after long search this worked for me  export DISPLAY localhost 20 0

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For me  the problem was that xorg-x11-xauth wasn t installed  I installed it and then it worked    The packages that I have now are    libX11-common-1 6 3-2 el6 noarch libX11-1 6 3-2 el6 i686 libX11-1 6 3-2 el6 x86 64 xorg-x11-drv-ati-firware-7 6 1-2 el6 noarch xorg-x11-xauth-1 0 9-1 el6 x86 64

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check whether  DISPLAY variable is set or not  with the below command    echo  DISPLAY  if the display variable is not set  run the below command to set   even if it is set  you can have below one for your session   export DISPLAY  0 0  in putty also have the x display location as  0 0

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This command helped me to solve the problem   export DISPLAY  0

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You need to specify the -Djava awt headless true parameter at startup time

User · Answer

First  start XQuartz  Second  ssh -X user ip address       start your process  if you ssh and then start XQuartz you will get that error

User · Answer

Remove the DISPLAY variable  unset DISPLAY   This helps in most cases  e g  starting application servers or other java based tools  and avoids to modify all that many command lines   It can also be comfortable to add it to the  bash profile for a dedicated app-server tools user

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For me logging in as -Y instead of -X worked   In case you ve got untrusted X11 as shown below  then try -Y flag instead  if you trust the host    Warning  untrusted X11 forwarding setup failed  xauth key data not generated

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I have fixed this issue by logging in using Xorg  By default  I have used Wayland  It looks like Wayland eliminates most of the design flaws of the Xorg it has its own issues

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This fixed my problem xhost    but Be aware that xhost   completely deactivates authentication and allows everyone to access all application on your screen  xhost  si localuser root seems to work similar with proper authentication

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I was using Xming and got similar error  Following steps were taken to fix the issue    In Xming launch check the box no access control  In putty ran the following command  DISPLAY XXX XXX XXX XX 0 0  export DISPLAY   Replace XXX XXX XXX XX with your IP address

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Solved  I just logout and login with xorg

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I run into the same error with you when i run the jconsole command at remote  I want to modify a parameter at jconsole that run on a remote Linux host  i can login the host use the secureCRT  the terminal throw this error information  Fortunately  when use the Putty  it s ok  Weird

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For Ubuntu 17 10 Install X virtual frame buffer  xvfb   apt install xvfb   And added these lines to the  etc profile file       Start the X virtual frame buffer  Xvfb  if   -f  usr X11R6 bin Xvfb    then  usr X11R6 bin Xvfb  1 -screen 0 1366x768x32 fi    Set the DISPLAY variable for the X virtual frame buffer  Xvfb  export DISPLAY localhost 1 0

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If you see this error in Hudson  try to remove the  java directory from your home directory  it may work for you

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Michael-O gave useful approach to solve the problem  Another way to solve this is by starting the server with Putty Console

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Mine issue was with the firewall  Disabled it temporarily    EDIT  And  the server hostname was pointing to another IP  Set it to simply localserver  strace xclock helped to debug this issue

User · Answer

change to a another user and try except root  it works for me

[java] Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable

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