Strange dimming effect when setting sRGB image as desktop background image and activating desktop icons

[Wise Melon]

I have recently noticed that when setting sRGB images as the desktop image, and having the desktop icons active (gsettings set org.gnome.desktop.background show-desktop-icons true) that there is a strange dimming effect, so I turn my machine on, log on, and then I see my image normally for a few seconds, then suddenly it is dimmed and stays like that, there are only a few seconds on login that I can then see it normally for.

But I find that if I set desktop icons to inactive (gsettings set org.gnome.desktop.background show-desktop-icons false) that the problem goes away until I reactivate them, in which case the immediate moment that I turn them back on in the settings the desktop image dims.

However this does not occur with just normal RGB or PNG images.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: gdm 3.16.1.1-0ubuntu1~vivid2 [origin: LP-PPA-gnome3-team-gnome3-staging]
ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
Uname: Linux 3.19.0-28-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Sep 14 12:34:32 2015
InstallationDate: Installed on 2015-07-29 (47 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: gdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Wise Melon (wise-melon-deactivatedaccount)]

I still experience this issue on Ubuntu GNOME 15.10 with GNOME 3.18.

[Wise Melon (wise-melon-deactivatedaccount)]

I have now also filed a bug report upstream on this issue: https://bugzilla.gnome.org/show_bug.cgi?id=761598

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.
And Ubuntu 15.10 (wily) reached end-of-life on July 28, 2016.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Wise Melon (wise-melon-deactivatedaccount)]

I don't run Ubuntu any more as my primary system, however on Arch with GNOME 3.24.2 I do not experience the issue any more. I will test on my Ubuntu VM in a bit and let you know about 17.04.

[Daniel van Vugt (vanvugt)]

Ubuntu 17.04 (zesty) reached end-of-life on January 13, 2018.

:)

[Wise Melon (wise-melon-deactivatedaccount)]

Well, on Arch the issue, (as I said before) doesn't seem to be present. However can't you just check yourself? It should be quite easy to reproduce if it's still a bug. If it is, then as it says "Fix released" for the upstream bug, then surely you can fix it downstream as well. And if not, then we can close the bug!

[Paul White (paulw2u)]

Tested various images using Ubuntu 18.04.
No issues noted so closing as fixed.