activities-overviewgnome-shellminimizewindow
In GNOME 3, I can open the Activities overview by clicking the 'Activities' button in the top-left corner or by pressing the Super key (usually the the key with the Windows logo). I see previews of all the open windows (in the current workspace) in Activities overview. But I wish to see only the windows that are not minimised in the overview.
How can I achieve this?
Yes it is possible with this Overview all windows extension.
Although it won't work after install, download the schemas folder from its git repo and paste in extension folder.
Path of extension folder:
~/.local/share/gnome-shell/extensions/OverviewAllWindows@amiller27
Overview shortcut will be super+ctrl+tab.
It's actually pretty easy. Pressing alt + f1 should also probably show you the Activities overview, but if you want it to be Super + Tab, then simply open the settings application, and then select the "devices" tab, and under that select "keyboard". You should see a list of your keyboard shortcuts.
Note: The screenshot below is from Ubuntu 18.04 LTS, but it should be the same in Ubuntu 17.10 as well, as long you're using the GNOME Desktop.
Now, you can either search for "activities", or you'll find it under the heading "System":
You should be able to change it right here. Note that the shortcut for "Switch Applications" under "Navigation" would probably already be Super + Tab. So, if this is the case, and you change the shortcut for "Show the Activities overview" to Super + Tab without changing the shortcut for "Switch Applications", then that will get disabled - so if you want that as well, then choose a different shortcut for that!
Also remember that there is an extension available at https://extensions.gnome.org/ for almost anything you could want to do - so, if you can't find any particular setting in the settings or gnome tweak tool applications, you can just look at this site.
Best Answer
This can be achieved using a GNOME Shell extension called Hide minimized by danigm . This extension hides all the minimised windows from the Activities overview.
Refer to this to learn about installing and managing GNOME extensions: How do I install and manage GNOME Shell extensions?