Ubuntu:
$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 Status: install ok installed Priority: optional Section: x11 Installed-Size: 2140 Maintainer: Ubuntu X-SWAT <> Architecture: amd64 Multi-Arch: foreign Source: xorg-server Version: 2:1.15.1-0ubuntu2.7 Provides: xserver Current problem:
Xvfb do not support RANDR extension, even if I add the flag:
+extension RANDR If I run xdpyinfo, RANDR is not on the list. It's a missing feature or a bug. I found a reference here with a patch:
And looks like that in other distros like debian, there is already a testing build of Xvfb with support:
I am trying to run a program throught Xvfb, and it returns the following error:
Xlib: extension "RANDR" missing on display ":99". The program works if I run it via ssh/command line. The problem appears to be the the lack of support for "RANDR" in xvfb.
My question is: what is the easiest way to get xvfb with "RANDR" support in my system?
1 Answer
This may be a problem with the package install for 14.0.4. On 16.0.4:
$sudo apt-get install xvfb $Xvfb :99 -screen 0 1024x768x24 > /dev/null & $ xdpyinfo -display :99 | grep "number of extensions" -A 25 number of extensions: 25 BIG-REQUESTS Composite DAMAGE DOUBLE-BUFFER DPMS GLX Generic Event Extension MIT-SCREEN-SAVER MIT-SHM Present **** RANDR **** RECORD RENDER SECURITY SGI-GLX SHAPE SYNC X-Resource XC-MISC XFIXES XINERAMA XInputExtension XKEYBOARD XTEST XVideo 
