`akonadi-control` crashes on startup

Touchpad malfunction

Solution

Unmark disable touchpad while typing in touchpad settings.

Disable windows key from opening the launcher

Solution

Remove the shortcut (the default is alt+f1) from Application Launcher settings.

Keyboard layout settings

To add a pt keyboard:

Language: English
Layout: English (US)
Variant: English (US, intl., with dead keys)