Top "X11" questions

"No X11 DISPLAY variable" - what does it mean?

I am trying to install a Java application on my Linux machine (Slackware). I have received the following error, and …

java linux variables x11 headless

Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms

I have box where I run tests. It seems like Jenkins would ssh in and execute commands described in the …

firefox selenium jenkins x11 selenium-webdriver

Can you run GUI applications in a Docker container?

How can you run GUI applications in a Docker container? Are there any images that set up vncserver or something …

x11 sandbox docker vnc

How can I specify a display?

When I run some programs over SSH, such as firefox &, I get an error Error: no display specified I …

x11

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

I have a script using java to connect to display X11 in the port 10.0 at localhost but i get always …

java linux x11 xserver

How to check if X server is running?

Is there any way to find out if the current session user is running an Xserver (under Linux) ? I'v started …

linux x11 xserver

Error: cannot open display: localhost:0.0 - trying to open Firefox from CentOS 6.2 64bit and display on Win7

I am on a Windows7 machine and I'm trying to get firefox to open on the centOS machine, but be …

x11 x11-forwarding

Forward X11 failed: Network error: Connection refused

I have a VPS which OS is CentOS6.3. I want to run startx via PuTTY and Xming. But, it produces …

ssh x11 putty xming

how to add the missing RANDR extension

I have setup the xvfb server on my headless server and when I m running the DISPLAY=:99 firefox I am …

x11 headless xvfb xrandr

Cannot connect to X server :0.0 with a Qt application

Compiling on Fedora 10. I have just started my first qt GUI application. I used all the default settings. Its just …

linux qt x11