I've got Gnome 3.20 running with the "Workspace Grid" extension. Everything works well, except when pressing ctrl + alt + [arrow] to navigate my workspaces, the resulting overaly doesn't actually show what's on the workspace. If I go into the Activities are, the workspace thumbnails are displayed as they should be.

Here's what the overlay looks like currently (notice that the overaly is totally blank in each box): Picture of blank overlays (where there should be thumbnails of what's currently on the screen

Here's what it should look like: Picture of correct overlays (where there are thumbnails of what's currently on the screen

I currently use the "Workspace Grid" plugin, also.

  • Did you try to reinstall Gnome?
    – M. Becerra
    Oct 25, 2016 at 15:39

2 Answers 2


If one hasn't noticed, the said issue has been unsolved for the past two years to this answered date, according to this issue #4 on GitHub. The description is also very much alike:

If one tries to switch workspaces using the Gnome "hot corner" then one can see all workspaces with all the windows respectively opened in them. I would like a similar display here, while switching workspaces, rather than just a grid of boxes [...]

The current maintainer, zakkak, seems to be aware of this issue from before and even quoted another project that had similar feature.

This one seems more related to what we want to achieve.

The implementation however, seems to be incomplete:

I have tried implementing it but I don't know how to make it centre aligned. Anyone who wants to try and fix/improve it can find the code in https://github.com/zakkak/workspace-grid-gnome-shell-extension/tree/thumbnails. It currently displays both the switcher and the thumbnails for testing purposes.

Several contributors had tried testing the implementation and latest attempt to this date was recorded in early-2016, which noted the limitation in this issue #23.

Incorrect grid scaling #23

As mentioned in #4

screenshot from 2016-01-16 18-09-04 (omitted to avoid hotlinking)

Note that this is using the 'thumbnails' branch.

Note that this answer:

  • intends to quote relevant information found in the linked resources;
  • assumes that OP is not aware of the issue being discussed on GitHub;
  • otherwise is useful for users who are affected by the same issue.

Disclaimer I do not use GNOME and not involved with the project.

TL;DR Try out the 'thumbnails' branch, if you haven't. Review the code and suggest improvements at the project repository on GitHub.


This extension works fine to me in Ubuntu 18.04 with gnome 3.28.3,


I installed manually following the step showed here!.

  • 1
    It is good practice to give key information in the answer instead of an external link (so that if the external link goes down not everything is lost)
    – dsSTORM
    Apr 21, 2019 at 15:16

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