Double-clicking only happens when you press the mouse button twice quickly enough. If the second press is too long after the first, you'll just get two separate clicks, not a double click. If you have difficulty pressing the mouse button quickly, you should increase the timeout.
Open the Activities overview and start typing Mouse & Touchpad.
Click on Mouse & Touchpad to open the panel.
Under General, adjust the Double-click slider to a value you find comfortable.
Click the Test Your Settings button to test. A single click in the window will highlight the outer circle. A double-click will highlight the inside circle.
If your mouse double-clicks when you want it to single-click even though you have increased the double-click timeout, your mouse may be faulty. Try plugging a different mouse into your computer and see if that works properly. Alternatively, plug your mouse into a different computer and see if it still has the same problem.
This setting will affect both your mouse and touchpad, as well as any other pointing device.
Got a comment? Spotted an error? Found the instructions unclear? Send feedback about this page.
