Questions tagged [xvfb]

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17 views

Can we share an application window among different users/X servers?

We have a family machine with KDE, where each member has a different account. Mom, dad and children. There are a few applications we'd like to be shared in such a way that they be available to all ...
1
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1answer
24 views

Display xvfb output in remote PC

I have a Windows pc that I use to connect to my Ubuntu PC over ssh that I use as a server (18.04) that is connected only to the internet and power (No monitor). When I run glxgears -info I only get 8-...
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0answers
38 views

Running GLFW in Docker

I have a simple program written in Go that opens a blank window using GLFW. I'd like to automatically run tests, therefore I have been trying to get GLFW running in docker. So far I've already managed ...
2
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0answers
35 views

2 x11vnc servers with separate displays showing different windows, overlapping

I am running a python (includes pygame) program on debian-jessie system with x11vnc and xvfb installed. I want to display terminal window and pygame window separately using xvfb and x11vnc. My ...
0
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0answers
146 views

How to run puppeteer in Docker on VPS and connect to display server to local machine?

I am running a puppeteer-controlled chromium instance inside of docker on a remote server. For a specific operation, I need to be able to interact with the page that is opened by puppeteer. This ...
0
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0answers
180 views

Fix Nvidia Breaking Xvfb?

I was using Xvfb again after having swapped my AMD gpu with a NVIDIA one, the result was rather annoying, i can no longer use Xvfb as it just crashes as soon as i launch it, Resolution doesn't seem to ...
0
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0answers
182 views

Increase FPS in new X display

I am trying to run an application in a different 'fake' X display, but I noticed that the performance (FPS) of the application if much smaller than in my original X display. I tried to use Xephyr, ...
0
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1answer
129 views

Can't Run xvfb @ 16:9 on MATROX MGA-G200

Capturing server screen configured as follow, the screen capture occurs but the ratio captured is not 16:9, is that due to video card ? Did : cvt 1920 1080 60 xrandr --newmode "1920x1080_60.00" ...
0
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1answer
623 views

Xvfb: export display permanently

I have recently set up Xvfb on Centos 7 machine. It is working absolutely fine. Only problem is that if I quit putty session (remote access) it would keep running Xvfb in background but display ...
4
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1answer
829 views

How to display an X11 screen from a remote machine? (Alternative to ssh -X)

I am locally on a machine without root rights. X forwarding is disabled. Remotely I am running a process on a machine without a screen, using the Xvfb virtual framebuffer which simulates an X server ...
1
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1answer
187 views

Looking for a simple smoke-test for xvfb

I have a server (Tomcat) that uses xvfb for headless rendering with libwebkit. I have a very short Java sample code to test that the whole setup (xvfb+libwekit, called from Java) works. It works on ...
5
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2answers
1k views

Xvfb + glxgears fails

I'm trying to use Xvfb, but it can't even run glxgears for some reason, and I don't know how to debug that, maybe I'm missing something. Here's the commands I'm using: Xvfb :99 +extension GLX -screen ...
0
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1answer
475 views

How can I prevent running “Xvfb :10 -ac” if it has already been run before?

I'm using Amazon Linux. I'm running an automated script through Jenkins with this command Xvfb :10 -ac However, if this command has already been run before, I get the error ... (EE) Fatal server ...
2
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1answer
5k views

Installing xvfb on Debian

I am trying to install xvfb on Debian in a Docker container. The base image for the Docker container is node:8 install instructions => How to install xvfb on Debian 8 (Jessie) | howtoinstall.co So ...
1
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1answer
846 views

Debian: Start Xvfb with systemd script and send to background

Im trying to write a systemd script which starts Xvfb in the background. Doing this in the console is no problem of course with appended "&". But i tried to write a systemd script and when im ...
0
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1answer
426 views

Xvfb in Python virtual environment

I have some code that uses gtk so unless there is an active DISPLAY, the code raises an RuntimeError: could not open display… This happens when I run tox. Is there a way to run a Xvfb server from ...
15
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1answer
5k views

How do I take a screen shot of my Xvfb buffer?

I'm using Amazon Linux. I want to run a headless chromium browser to use on my node.js Selnium tests. So I fire up my Xvfb server like so ... if ! pidof /usr/bin/Xvfb; then Xvfb :0 -screen 5 ...
2
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0answers
650 views

WebDriverError: unknown error: Chrome failed to start: crashed

I am trying to execute test scripts using Protractor, Google Chrome headless browser testing facility and xvfb on a Virtual Machine. I am running the command "npm run test:xvfb" to achieve this. But ...
4
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3answers
2k views

trying to get --listen-tcp on xvfb-run

I am trying to following these instructions http://afterdesign.net/2016/02/07/recording-headless-selenium-tests-to-mp4.html for recording selenium tests. However, when I try to connect to xvfb with ...
1
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1answer
1k views

XServer: how to check who/what uses display:N

I have a strange situation. These are my commands and their outputs: user@machine:~/Temp$ Xvfb :10 -screen 0 1024x768x16 _XSERVTransSocketINETCreateListener: ...SocketCreateListener() failed ...
1
vote
1answer
418 views

Xvfb: is some delay required running some program in new session?

I have a script.sh which I start in Xvfb new session this way: Xvfb :10 -screen 0 1000x200x24 & export DISPLAY=":10" && script.sh In script.sh I run one c++ program and one java program. ...
0
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1answer
434 views

xpra not working after upgrading debian

Once upon a time, I installed xpra and have been using it without problem. Then my harddrive crashed. I installed a new identical one, and restored a dd image of 6 months ago (before I had installed ...
3
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1answer
3k views

How to connect to X app via VNC which was by xvfb-run?

When I run Xvfb server directly, x11vnc can attach to the display fine as per Wikipedia page. However I'd like to achieve the same by running the X app using xvfb-run. Here is my attempt (to run ...
2
votes
1answer
1k views

X virtual framebuffer screen is 1024x9216 instead of 1024x768

I've run the X virtual framebuffer server on Ubuntu Linux which I'd like to access its screen via VNC. Here are my steps: Xvfb :1.0 -screen 0 1024x768x16 & Setup password by: x11vnc -storepasswd....
1
vote
1answer
2k views

Xvfb with 2 screens and Two x11vnc servers (one for each screen): only the first one work

I'm using CentOS 7 and x11vnc version 0.9.13 (release 11.el7) for arch x86_64. I create Xvfb with two screens (:10.0 and :10.1) like this: sudo Xvfb :10 -screen 0 1366x768x24+32 -screen 1 ...
2
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1answer
7k views

Xvfb -screen --> (EE) Cannot establish any listening sockets

I'm trying to run a gameserver for the game "Insurgency: Modern Infantry Combat" on a VPS rented from Kimsufi running Ubuntu 15.10. I've had prior experience messing around with Wine and Xvfb but ...
5
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3answers
5k views

How to run Xvfb without root?

Desired result on a server without root: 1) Run Xvfb without input devices, or 2) Just get Xvfb to run Background: I have two machines both having nearly identical builds of CentOS. One machine ...
5
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1answer
4k views

GLX doesn't work using xvfb-run

I'm on Ubuntu 14.04, and using it through ssh, which means I don't have local GUI for it. I need to run some command that requires GLX, but things aren't going well. Xvfb :80 -screen 0 1400x900x24 -...
11
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2answers
914 views

How to poll for Xvfb to be ready?

The Travis CI documentation says to run sleep 3 after starting xvfb to "give [it] some time to start". I couldn't find any reference to this delay in the man page. Is this cargo cult programming? If ...
3
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0answers
242 views

Error encounterd while running Firefox in Xvfb: “Xlib: extension ”RANDR“ missing on display ”:99“.” [duplicate]

I'm trying to run Firefox in Headless mode in a CentOS Linux release 7.0.1406 (Core) I have already have firefox-45.3.0-1.el7.centos.x86_64 installed. I have run the following commands for the ...
3
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1answer
962 views

Strange rendering issues when using xvfb-run

I have an app running remotely on a beaglebone, written in wxPython. I want to run the app inside of a virtual frame buffer, using Xvfb, and access it remotely using a VNC. It may also be pertinent ...
4
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2answers
3k views

Changing Xvfb frame buffer resolution while it's running

I run Xvfb with command: Xvfb :1 -screen 0 100x100x16 -fbdir /tmp And it's working fine. I can connect via VNC, and now under /tmp directory I have Xvfb_screen0 binary file. I thought it will act ...
2
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0answers
663 views

Xvfb stuck at “built-in extension GLX” on Amazon Linux

I started to use AWS EC2 with Amazon Linux a few days ago. I am running java with selenium webdriver over firefox to get some data from websites, and it works well when running on my windows computer. ...
5
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2answers
13k views

Howto terminate xvfb-run properly

In order to perform some JavaScript unit tests with karma inside a docker container (based on ubuntu 14.04) I'm starting firefox in the container using a karma-script-launcher with xvfb-run. The start ...
0
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2answers
920 views

How to take a screenshot of the X virtual framebuffer display?

I would like to take a screenshot from Xvfb display server. I already tried: xwd -root -silent -out screen.xwd but I can't read this file and I couldn't find any software (via Homebrew) which can ...
6
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1answer
15k views

Extension “RANDR” missing on xvfb

My system: $lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty Xvfb: $ dpkg -s xvfb Package: xvfb ...
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0answers
708 views

wkhtmltopdf & debian - install

I have a question about the installation of wkhtmltopdf on Debian machines via the apt-get command. So far, I've tested three environments, with different results, and I'd like to better understand ...
5
votes
1answer
3k views

Use xvfb to automate X program

I originally posted this question here, but upon second thoughts I decided here was a better place for this. I sadly have to use this proprietary program that bundles a camera driver. I want to ...
3
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0answers
445 views

Run OpenGl program on remote server

I often use X11 forwarding (occasionally VNC) to work on a remote machine, and this has worked great. But now I need to run a program that uses a specific version of OpenGL that means it doesn't work ...
2
votes
2answers
681 views

Xvfb not sending SIGUSR1, breaking xvfb-run

I've been working a knotty problem trying to run headless tests using the xvfb-run script provided with Xvfb. It works on my own Ubuntu images running in VirtualBox, but on the Ubuntu 15.04 AMI that ...
1
vote
1answer
965 views

Trying to run program that requires X11 server on headless Raspbian install

I'm trying to run a program in mono that requires a graphical server. The Raspberry Pi it will run on is headless. When I log in with X forwarding enabled from my local computer, I can run the ...
1
vote
1answer
4k views

How to take higher resolution screenshots with CutyCapt

Assume i take a screenshot via xvfb-run -s "-screen 0 1920x1080x16" cutycapt --url ... --out ... then i have learned that cutycapt will not use the X sessions parameters. How would i generate an ...
2
votes
2answers
4k views

Running Firefox in Xvfb: extension “RANDR” missing on display

I'm trying run Firefox headless with Xvfb in Debian 7.8. I run Xvfb (I tried with +extension RANDR and -extension RANDR) $ sudo Xvfb :10 -ac [dix] Could not init font path element /usr/share/fonts/...
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0answers
728 views

Xvfb: keyboard error

We have some GUI tests (selenium) that are run on a virtualized CentOS6.6 environment and when the Xvfb process is started, we get the following error: The XKEYBOARD keymap compiler (xkbcomp) reports:...
3
votes
1answer
1k views

Problems while executing slimerjs on linux (Centos 6.5 32bit)

I'm not used to work with Linux yet I wanted to try to use slimerjs on a Linux vps in order to have access to php exec function since most hosting companies disable that function. I did manage to ...
1
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0answers
712 views

xvfb-run aborting on cluster

I'm trying to run a python script with xvfb-run on a cluster using SLURM; when I use an interactive session (srun) it works fine, but when submitting to a queue (sbatch) it aborts/fails without much ...
15
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3answers
12k views

GLX extension not working properly with xvfb

I have an Ubuntu 14.04 system with the following packages installed: libegl1-mesa:amd64 libegl1-mesa-drivers:amd64 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 libgl1-mesa-glx:amd64 libgl1-mesa-glx:...
2
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1answer
522 views

Is there difference between Xvfb option `-extension` and `+extension`?

I'm facing RANDR missing problem with Xvfb and firefox. Some people suggested Xvfb :1 -extension RANDR can solve the problem. But I found a also +extension option. In my environment(CentOS6.5), the ...
12
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1answer
3k views

Why does `xvfb-run glxgears` fail with an swrast error?

xvfb is supposed to let me run X programs in a headless environment. But when I run xvfb-run glxgears, I get: libGL error: failed to load driver: swrast libGL error: Try again with LIBGL_DEBUG=...
1
vote
1answer
812 views

Can I run xvfb on a console-only debian system?

I need to be able to run firefox on a console-only debian system, and I want to run it using xvfb. The command I have been using to run it on my regular debian system is: $ xvfb-run firefox & ...