Ubuntu touchpad only works when pressing down

[Mathurin1968]

HP Envy laptop with Ubuntu 18 BUT the touchpad has stopped working... not sure, probably something I did somewhere.

The pointer doesn't move at all unless you press down on the pad then drag the pointer - no pressing on the touchpad. Just sliding your finger on the touchpad doesn't seem to work anymore.

I installed xserver-xorg-input-synaptics but nothing...

Anyone else seen this? It works fine with a mouse plugged into it, but, I can't stand when something doesn't work right.

Thanks!!

[1fallen]

To list all device's use:
This is how mine shows:

xinput list
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ Logitech K780                           	id=9	[slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad              	id=12	[slave  pointer  (2)]
⎜   ↳ TPPS/2 IBM TrackPoint                   	id=13	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Power Button                            	id=6	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
    ↳ Sleep Button                            	id=8	[slave  keyboard (3)]
    ↳ Integrated Camera: Integrated C         	id=10	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=11	[slave  keyboard (3)]
    ↳ ThinkPad Extra Buttons                  	id=14	[slave  keyboard (3)]
    ↳ Logitech K780                           	id=15	[slave  keyboard (3)]

Ubuntu 18.04 comes with libinput touchpad driver by default and the OS is missing Synaptics touchpad driver.
To see if installed use:

apt policy xserver-xorg-input-synaptics

if it shows as not installed use:

sudo apt install xserver-xorg-input-synaptics

EDIT: Sorry I just flat missed this: "I installed xserver-xorg-input-synaptics but nothing...
"

[Mathurin1968]

Hah. no worries! I appreciate the suggestion. Yeah, I think I've messed something up somewhere.

[liaata]

Sorry if this sounds strange, but there is a keyboard combination to turn the touchpad off.
Happened to me as well haha