keyboard LED indicator have low contrast on light themes

[Norbert]

Steps to reproduce:
1. Install Ubuntu 18.04 LTS
2. Install ubuntu-mate-desktop
3. Enable keyboard LEDs from mate-tweak (Panel->Panels, Panel Features, Enable keyboard LED)
4. Set light theme from `mate-control-center` Appearance

Expected results:
* keyboard LEDs indicator is visible on light and dark themes

Actual results:
* keyboard LEDs indicator has low contrast on light themes

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: mate-panel 1.18.4-2
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
Architecture: amd64
CurrentDesktop: MATE
Date: Mon Oct 30 23:56:57 2017
SourcePackage: mate-panel
UpgradeStatus: No upgrade log present (probably fresh install)

[Norbert (nrbrtx)]

18.04 LTS with all updates, bug exists.

[Norbert (nrbrtx)]

Still a problem for Ubuntu MATE 19.04 beta2.

[Launchpad Janitor (janitor)]

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

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1728715

[Martin Wimpress  (flexiondotorg)]

Adding suitable icons for different themes is half the solution. But those icons will be added to ubuntu-mate-artwork 22.04.10.

That said, mate-settings-daemon doesn't respond to theme changes, so the correct icons are only loaded when the desktop session starts or if mate-settings-daemon is reloaded.

Option are:

- mate-tweak to reload mate-settings-daemon when toggling on keyboard LED status
- mate-appearance-properties to reload mate-settings-daemon when changing themes
- mate-settings-daemon should listen to theme change and reload the icons

[Martin Wimpress  (flexiondotorg)]

If mate-settings-daemon is restarted in an active desktop session, the Caja (the file manager) also needs to be restarted so it can bind to the new settings daemon and react to events, such as theme changes.

Restarting Caja causes all active file manager windows to be closed. And that is rather invasive. Therefore restarting mate-settings-daemon is not a viable solution.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-mate-artwork - 22.04.10

---------------
ubuntu-mate-artwork (22.04.10) jammy; urgency=medium

  * Sync Yaru-MATE themes with upstream Yaru.
  * Add mate-settings-daemon keyboard indicator icons. (LP: #1728715)

 -- Martin Wimpress <email address hidden> Thu, 24 Mar 2022 18:49:31 +0000