Public bug reported:

If I connect a beamer via VGA-port to my laptop, the beamer isn't
recognized, it's not listed using xrandr --query nor using disper -l.

My laptop has two graphics cards, an intel one and nvidia quadro K2000

I managed to make it work with the following procedure:

(Initially the graphics card was set to nvidia, VGA is plugged in the
whole time):

- start arandr
- prime-select intel
- log out and login again
- start arandr
- VGA isn't recognized
- prime-select nvidia
- log out and login again: now it works!

I am using xmaond as WM and lightdm for login.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Wed Jul 13 08:45:18 2016
InstallationDate: Installed on 2016-05-18 (55 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1602529

Title:
  Beame on VGA port isn't recognized

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