When I try to run xrandr on Ubuntu 17.10 (artful) with xfce 4.12 over VNC I get the error

RandR extension missing

I've tried installing libxrandr2 but it's already installed. When I run lxrandr I get the error:

Xlib: extension "RANDR" missing on display ":1.0". 

I'm using tightvnc as the VNC server. I've tried all the usual sudo apt-get repair things.

When I do

sudo apt-get update
sudo apt-get install x11-xserver-utils

I'm told that the package is already the newest version.

0

2 Answers

you have to set display size before starting the vnc like vncserver -geometry 1920x1080 :1

Try installing the development version of randr:

sudo apt-get install libxrandr-dev

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