Rotate dual monitor screen 90 degrees on Ubuntu 15.10

Question

I am trying to rotate a dual monitor which is attached to the VGA output of my laptop. My system is Ubuntu 15.10.

However, here is the outcome I get when I use xrandr:

xrandr --output VGA-1-0 --rotate right
xrandr: output VGA-1-0 cannot use rotation "right" reflection "none"

I have seen other posts on this subject, which all recommend editing xorg.conf. I have tried that, too. Here's my current xorg.conf file:

Section "ServerLayout"
Identifier "layout"
Screen 0 "nvidia"
Inactive "intel"
EndSection

Section "Device"
Identifier "intel"
Driver "modesetting"
BusID "PCI:0@0:2:0"
Option "AccelMethod" "None"
Option "RandRRotation" "True"
EndSection

Section "Screen"
Identifier "intel"
Device "intel"
EndSection

Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:1@0:0:0"
Option "ConstrainCursor" "off"
Option "RandRRotation" "True"
EndSection

Section "Screen"
Identifier "nvidia"
Device "nvidia"
Option "AllowEmptyInitialConfiguration" "on"
Option "IgnoreDisplayDevices" "CRT"
Option "RandRRotation" "True"
EndSection

Still, I keep getting the same error when trying to use xrandr to rotate that screen.

Is there another way of doing so?

Answer 1

Timo Aaltonen has fixed this issue! Update your xorg-server. Thank you.

Answer 2

(EOL of 15.10 expires today! I hope this helps!)

There is an old app (2012) that did the trick for me in my previous laptop. It is called Magick Rotation. Fint the latest .deb file here. Note, apparently it only works for Lenovo, Dell, Fujitsu, and HP. To install, do as usual:

sudo dpkg -i file.deb
sudo apt-get install -f 

The app has a nice GUI, that you can see below:

Note: since this is an old app, some old dependencies might be needed. Be careful!

In the Advanced Setup menu you can setup the onboard keyboard to run after rotation. It is very likely you will not have CellWriter (the default), as it is not shipped with 14.04 and newer ubuntus. In your case, this keyboard must be onboard. Change accordingly (see onboard --help for the full range of options).