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Questions tagged [xvfb]

Xvfb; X virtual framebuffer, is an X11 server that can run graphic applications without a physical screen.

Xvfb is an X11 server that executes all the graphical operations in memory without showing any screen output.

It acts exactly like any other X widow server but with the difference that no output is shown so Xvfb does not require the computer it is running on to a screen.

It can be used for many things like remote controlling browsers in web testing, or background tasks running for creating screenshots of programs or web pages.

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How to run OpenAI Gym .render() over a server

I am running a python 2.7 script on a p2.xlarge AWS server through Jupyter (Ubuntu 14.04). I would like to be able to render my simulations. Minimal working example import gym env = gym.make('CartPole-v0') env.reset() env.render() env.render()…
Toke Faurby
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Xlib: extension "RANDR" missing on display ":21". - Trying to run headless Google Chrome

I'm trying to run some Webdriver Maven tests on a headless server via xvfb using Chrome (Firefox also didn't work) but I'm getting this error message: Xlib: extension "RANDR" missing on display ":21". What more information should I provide and…
Kaloyan Roussev
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How to make Xvfb display visible?

I am running selenium through Xvfb on display number :99 like this: /usr/bin/Xvfb :99 -ac -screen 0 1024x768x8 & export DISPLAY=":99" && java -jar /usr/lib/selenium/selenium-server-standalone-2.24.1.jar -port 4444 However display with number…
Dziamid
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easyprocess.EasyProcessCheckInstalledError: cmd=['Xvfb', '-help'] OSError=[Errno 2] No such file or directory

I'm trying to setup a display but it's telling me No such file or directory. Traceback (most recent call last): File "/var/www/envs/venv/proj/scripts/my_file.py", line 44, in click display = Display(visible=0, size=(800,600)) File…
User
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xvfb-run on OS X

Is it possible to have xvfb-run on OS X? I develop a PHP application which uses xvfb-run. Before I worked on Ubuntu and it was OK. Now I've moved onto Mac and the application does not work. Or maybe any cross-platform alternative is available to use…
Axarsu
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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 getting this exception missing RANDR extension Many of them said to disable some xinerna from the xorg.conf file but this file is not getting…
Mahesh More
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Running Chrome WebDriver on a linux server with no display

I'd like to run automated tests using selenium2's chrome webdriver on a linux server. I've already set up firefox to run on the server by using Xvfb (See http://www.semicomplete.com/blog/geekery/xvfb-firefox.html) and would like to do something…
Snukker
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Resizing an Xvfb display

Simple Question: Is there a way to resize a Xvfb display? I tried with RandR but it seems that the RandR extension is not supported by Xvfb. Are there other ways to resize the screen? Thanks for your help!
Erik
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Installing and Configuring xvfb

I'm trying to find a Ubuntu operating system, version of xorg, and version of xvfb that are compatible. Can anyone help me with directions to install xvfb without getting a hang on Initializing build-in extension GLX So far I've tried the following…
kevinn2065
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How to video-record selenium tests running headless inside a docker?

I am running python-selenium tests inside a docker using a headless firefox. During these tests I am able to make screenshots with the selenium method for screenshots - but can I use something to 'video' record the virtual display during the whole…
Alex
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Xvfb & Docker - cannot open display

I need to run XVFB and docker with firefox but can't get them to work together Here is my Dockerfile : FROM abevoelker/ruby:latest # based on ubuntu ENV TERM linux RUN apt-get update && apt-get install -y ..... ENV DISPLAY :99 # Install Xvfb init…
overlox
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xvfb-run unreliable when multiple instances invoked in parallel

Can you help me, why I get sometimes (50:50): webkit_server.NoX11Error: Cannot connect to X. You can try running with xvfb-run. When I start the script in parallel as: xvfb-run -a python script.py You can reproduce this yourself like so: for…
user3236315
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Xvfb not found on your system

I try to use Xvfb to make the headless code run. However, I encountered the problem that "Xvfb not found on your system" when I tried to run my ruby code. Then I tried to install Xvfb using sudo apt-get install xvfb However, "apt-get: command not…
zhouyu
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Jenkins, xvfb and selenium

I have been attempting to follow the instructions here to get the Xvfb plugin running: https://wiki.jenkins-ci.org/display/JENKINS/Xvfb+Plugin Currently the xvfb executable is at /usr/bin/Xvfb. My project configuration and Jenkins config are…
Calum
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py.test SetUp/TearDown for whole test suite

I have a Python package that needs access to X11. I want to use Xvfb so that I do not have to have a real X11 installed on the build machines -- Hudson in this case. So, I would like to start a Xvfb server when py.test starts, use that one server…
Sardathrion - against SE abuse
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