Public bug reported:

Adjusting display settings for multiple monitors in gnome-shell in
Ubuntu 17.10/18.04 is really annoying due to its user-unfriendly

1. When you select a resolution, you have to go and look for the small
close button in the resolution selection window's titlebar and manually
close the resolution selection window. It should close the window
automatically when you select the resolution.

2. When you change the scaling (eg from 200% to 100%), it always resets
the monitor layout to left-right. So if you have already changed it to
above/below and then you change the scaling from 200% to 100% for the
primary monitor, the layout resets to left-right and you have to change
it back again.

3. The default in X11 when it forgets the monitor settings is to set
native resolutions on both monitors. In X11, if the laptop monitor is 4K
and the external monitor say 1920x1080, in X11 it inexplicably sets both
to scale to 200%, so the text etc on the external monitor is gigantic.
(IIRC, it doesn't have this problem in Wayland - it will set the 4K to
200% and the external to 100%.)

4. In case 3, when I change the 4K display to 1920x1020 and then change
the scaling from 200% to 100%, the 'Apply' button disappears so it's
impossible to select the new configuration. (It seems that it considers
these different configurations to be equivalent, perhaps because they
have both been divided by two?)

This is made worse by the fact that normally g-c-c remembers settings
for different monitors (ie resolutions and display layouts for different
monitors), but it completely forgets when either:

a) You switch between Wayland and X11;

b) At apparent random intervals, particularly if you change monitors (eg
from a 1920x1080 one to a 1680x1050 one).

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.26.2-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar  8 11:05:49 2018
InstallationDate: Installed on 2017-08-16 (203 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to bionic on 2017-11-17 (110 days ago)

** Affects: gnome-control-center (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug bionic

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  The display settings in gnome-control-center are annoying to use for
  multiple monitors

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