Ttgjyuk

I am talking about when you click on the icons in the dock

This command (obviously)

gsettings set org.compiz.unityshell:/org/compiz/profiles/unity/plugins/unityshell/ launcher-minimize-window true

will not work.

Related to: Switching between windows with scroll wheel on Dock

It seems as Ubuntu Dock is a fork of the popular and highly customisable Dash to Dock, Ubuntu Dock obeys (some) preferences set by Dash to Dock.

See Solution 2 for the simplest fix.

Solution 1

Follow the steps below.

1. Go to Dash to Dock's homepage at extensions.gnome.org.


2. Turn the extension on by clicking on the toggle button.


3. Reload the page. It should look like this:
   


4. Click on the "settings" symbol next to the toggle button which now says "ON". A window should pop up.


5. Navigate to the "Behaviour" tab and select "Minimise" in "Click action".
   


6. Close this window and come back to Dash to Dock's homepage.


7. Click on the toggle button to deactivate Dash to Dock.
   

Now clicking on the icons of running applications in Ubuntu Dock should minimise/restore the focussed application window.

Solution 2

Open Terminal and run

gsettings set org.gnome.shell.extensions.dash-to-dock click-action 'minimize'

To revert to the default option, simply run

gsettings reset org.gnome.shell.extensions.dash-to-dock click-action

Also, run the following to see all possible permitted values

gsettings range org.gnome.shell.extensions.dash-to-dock click-action

use this command. it will show preview if multiple windows are opened and minimize if single window open.

gsettings set org.gnome.shell.extensions.dash-to-dock click-action 'minimize-or-overview'

For UBUNTU 18.04:

1. 
   

   Install gnome tweak tool:

   
   
   

   sudo apt install gnome-tweak-tool
   

   
   



2. Open Application centre



3. Type "Dash to Dock"


4. Install


5. Open the tool and select behaviour > click action > minimize

Most of the answers are valid but I found out that enabling click to minimize will result in no preview of the open instances of the app.

Alternatively you can use Shift+Mouse middle click to minimize a window.

Tested this on ubuntu 18.04.1

I will say that the best way is not to change the action to minimize. Just live it as it is. Instead, if you look at this Navigate to the "Behavior" tab and select "Minimize" in "Click action". Next to the click to action you will see a gear icon.

A new window should popup (Customize middle-click behavior) there you can see on the first option that Shift+Click already is set to minimize the window. So you can leave all default and when you want to minimize the do Shift+Click.

I recommend this because there are other post where people gets annoyed with the result after they change this behavior and then want to reverse it because this does not work properly when you have multiple windows open.

Here is a screenshot of the screen that I am referring to:https://imgur.com/YmW93Id

Step one Click on the settings next to the on button

Step two click on the Behavior tab

Step three click on the gear icon next to the Cycle through windows

Step four look at the first option that indicates to use Shift+Click

Using this will allow you to get the functionality you desire without having the issue that other are complaining about when it come to multiple browser windows open.

Here is one of the comments that I found around the internet of issues when changing that behavior How to turn off on click minimize on dock option on Ubuntu 18.04?