I like the look of the Unity desktop more than GNOME, but with Unity, I can't use tap-to-click on my mousepad, is there a way to fix this?
Well, I don't know if Unity has some option for it, hopefully someone will answer on that one. But you can enable it from command line:
- list devices with
xinput list, and find the touchpad name in the output.
- use a
xinput set-prop "SynPS/2 Synaptics TouchPad" "libinput Tapping Enabled" 1, where the text in first quotes
SynPS/2 Synaptics TouchPadneeds to be replaced with touchpad name you got in step 1.
This will only work till reboot, so you'll need to add the command from step 2 to autostart.
Late Answer for those who see themselfes stumbling in this wide narrow sea.
If you are using a Synaptics device best thing would be installing the Synaptics drivers - The options you need will be added to the general settings under "Mouse and Touchpad".
EDIT: Apparently xf86-input-synaptics is not a synaptics driver, but still did the job for others and my machine(xps15).
To do so, first update everything
sudo apt-get update
and install the driver with
sudo apt-get install xserver-xorg-input-synaptics
In case that doen't work because you are missing dependencies, go for the HWE version;
sudo apt install xserver-xorg-input-synaptics-hwe-18.04
finally, restart and you should find the extended standard options in the system settings.
I wouldn't use Unity in 18.04 as it is discontinued and you can customize Gnome quite a bit to emulate most of the features anyway, but, to each his own.
In any case, did you uninstall the Gnome utilities while installing Unity? If not, and you are using Xorg, you should see the option for tap-to-click in the Mouse & Touchpad settings.