No caps lock indicator on login screen

[Knickers Brown]

Expected results: Pressing the Caps Lock key should cause an indicator to appear on the login screen.

Actual results: Pressing the Caps Lock key does not cause the login screen to change in any way.

Reproducing:

1. Install Ubuntu 17.10 Desktop ISO and log in, press Caps Lock key, see no indicator. (gdm3 3.26.1-3ubuntu3)
2. Install Fedora 27 Workstation ISO and log in, press Caps Lock key, see an indicator. (gdm-3.26.2.1-1.fc27.x86_64)

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gdm3 3.26.1-3ubuntu3
Uname: Linux 4.14.2-041402-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
CurrentDesktop: Budgie:GNOME
Date: Tue Nov 28 08:24:31 2017
InstallationDate: Installed on 2017-11-05 (22 days ago)
InstallationMedia: Ubuntu-Server 17.10 "Artful Aardvark" - Release amd64 (20171017.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Not a duplicate of bug 945534 because that one says that the caps lock warning is working.

[does not matter (doesnotmatter)]

Same thing is happening on 18.04

[Knickers Brown (metta-crawler)]

18.04 GDM login screen now displays an exclamation mark as a caps lock indicator.
The older GDM used a different icon but this is sufficient for me.
It is my opinion that this issue has been resolved.

[Knickers Brown (metta-crawler)]

gdm version 3.28.0-0ubuntu1

[Daniel van Vugt (vanvugt)]

Upstreams:
https://gitlab.gnome.org/GNOME/gdm/issues/326
https://bugzilla.gnome.org/show_bug.cgi?id=762881

[Marco Trevisan (Treviño) (3v1n0)]

Fixed in 3.31.90-1ubuntu1

[Mustafa Erdogan (muerdogan)]

i am currently using Lenovo ThinkPad x230 which doesnt have physical caps lock indicator on keyboard like some other ThinkPad laptops. i noticed that on Ubuntu 18.04.2 there is no Caps Lock indicator on screen. it would be perfect if you put it default as other on screen indicators such as volume controls, microphone indicator, screen brightness indicator. thanks.

[Michel-Ekimia (michel.ekimia)]

I understand that backporting this in 3.28 (18.04) may be impossible.

I'm then wondering what workaround we have , gnome-shell extension ?