Selecting "Single Display" often dosn't show scaling options until the settings are applied.

[Jonathan Chan]

# Release

Description: Ubuntu 17.10
Release: 17.10

# Package

Not sure how to check the version of the GNOME settings applet, sorry.

# Steps to reproduce

Connect an external monitor. Open the "Displays" section of the Settings app. Select "Single Display" and select the currently disabled monitor in preparation for switching to it.

# Expected

The "Scale" selection appears, as it does when the monitor is both selected and "Apply" has been clicked.

# What happens instead

The "Scale" selection does not appear, and in fact only appears after "Apply" has been clicked. This means that in order to switch to another monitor, you have to first apply an incorrect setting (scaling will be wrong), click "Keep Settings," find your way to the "Scale" selection, select the correct scaling, click "Apply" again, then click "Keep Settings" a final time.

This is really bad when switching between monitors. The worst part is that whether or not the option is visible is inconsistent.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-control-center 1:3.26.2-0ubuntu0.2
ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 21 23:17:17 2018
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2017-11-30 (83 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/zsh
 PATH=(custom, user)
 LANG=en_US.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.