Displays -> Could not get screen information

[Andrew Neeson]

After suffering a login-loop bug (which I fixed with "mv .Xauthority .Xauthority.bak") my screen settings disappeared.

When I attempted to reset them I could no-longer access my Display Settings.

Instead of my normal display settings I got: Could not get screen information

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-control-center 1:3.26.1-0ubuntu5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.4
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Mon Nov 20 12:07:14 2017
InstallationDate: Installed on 2017-04-17 (216 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to artful on 2017-10-23 (28 days ago)

[Andrew Neeson (andyrokit)]

...I'm not sure if it's related, but I've just noticed that the Date/time is missing from the top bar

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we cannot work on this bug because your description didn't include enough information. You may find it helpful to read "How to report bugs effectively" http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

We have instructions on debugging some types of problems at http://wiki.ubuntu.com/DebuggingProcedures.

At a minimum, we need:
1. The specific steps or actions you took that caused you to encounter the problem.
2. The behavior you expected.
3. The behavior you actually encountered (in as much detail as possible).
Thanks!

[Andrew Neeson (andyrokit)]

Steps to reproduce:
- Navigate to:
 - System Settings...
 - Devices
 - Displays

Expected behaviour
- The display configuration options are shown

Actual behaviour
- The following message is shown: "Could not get screen information"

If there's any additional system settings or logs you need let me know.
I've noticed a whole host of problems since upgrading to 17.10. Most of them relating to graphical elements

E.g.
Dragging windows would sometimes cause my session to reboot.
My Evolution mail client continually crashed (I had to uninstall it).
Just this morning I encountered a new issue: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1733557

I've made no manual changes to an of the core settings/packages on Ubuntu (freshly installed 6 months ago).

If there's any steps you'd like me to try, let me know. At this point I had resigned myself to reformatting my machine.

[Launchpad Janitor (janitor)]

[Expired for gnome-control-center (Ubuntu) because there has been no activity for 60 days.]