Unable to set "When the Power Button is pressed" to Ask or Interactive

[Norbert]

Steps to reproduce:
1. Install Ubuntu 18.04 on real hardware (since there is a some bug 1769372 VirtualBox)
2. Login to session
3. Open GNOME Control Center, Power (or simply `gnome-control-center power`)
4. Try to set "When the Power Button is pressed" to Ask or Interactive

Expected results:
there is an option to Ask user (or Interactive) dialog

Actual results:
there is no option to Ask user (or Interactive) dialog

Workaround:
set such option from terminal with `gsettings set org.gnome.settings-daemon.plugins.power power-button-action interactive` (it will work, but will not be shown in `gnome-control-center power`)

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.28.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May 7 13:10:19 2018
InstallationDate: Installed on 2018-05-06 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Jeremy Bícha (jbicha)]

The Power Off option in that drop down **is** the 'interactive' gsettings setting. I believe that is an intentional decision by the gnome-control-center maintainers to use that for Power Off.

See this upstream report:
https://gitlab.gnome.org/GNOME/gnome-control-center/merge_requests/39

In the Ubuntu session, "Power Off" (interactive) is the default in Ubuntu 18.04 LTS.

I'm closing this bug since this is a bit of a design decision and should be handled upstream if changes need to be made.

One thing you could do though is have the gnome-user-docs user help explain what "Power Off" does. (It does the same thing as the power button in the system status menu in the top right of GNOME Shell.)