[X/K/L/Ubuntu] Handle multi-screen on Linux

Hi dear reader,

For my first article (in English), I will briefly talk about a nice discovery for double monitoring on Ubuntu, Lubuntu, Xubuntu, Kubuntu… (hence the title!). It may work on other distributions, if it is the case, please leave us know it.

Little introduction (useless but put yourself in the context of this wonderful discovery): I installed Xubuntu 12.10 (okay, was not yesterday) on my old laptop and went to my CS TP. Switched on the provided PC but it crashed on the BIOS, what a shame! So I took my laptop and you know, there is nothing better than a dual screen for working efficiently! There the adventure begins.

Facts: I boot with the screen already plugged in or plug it later (on HDMI or VGA), at best the second screen is in mirroring state, at the worst not switched on.

Available solutions:

  1. Do it via CLI (and since I already crashed multiple times my Mint distribution on my desktop computer with tweaks on Xorg via CLI, I prefer to not do it this way now 🙂 )
  2. Do it via a small but easy software: ARandR (which is nothing else than a GUI for XRandR)
quentin@Quentin-Portable:~$ sudo apt-get install -y arandr

Then there is two possible ways to launch the software:

  1. quentin@Quentin-Portable:~$ arandr
  2. or in the Settings Panel:

multiecran_base

Then nothing easier than this: move the mouse to place screens as you would like them to be and validate:

multiecran_final

Here we are!

If ever the screen is not displayed in ARandR, think about activating it in the Display settings or even in the software!

However, notice that the screen at the most left is always the one displaying the task bar… by default. You can change it if you want like that (at least in XFCE): Settings->Dashboard. In the menu Output, chose the screen you want! Do not forget to check « Expand to all screens » if you want the taskbar to take the full width (sum of width of all screens)!

In the same topic, the author recommends this article: [AVAILABLE SOON]

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