Touchpad stopped working 20.04

I updated ubuntu 18.04 to 20.04. All worked fine for weeks until today. Touchpad on lenovo y580 stopped working just like that. I didn't install any new updates yesterday.

Xinput log:

Virtual core pointer id=2 [master pointer (3)]
↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
↳ PS/2 Synaptics TouchPad id=14 [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)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Video Bus id=10 [slave keyboard (3)]
↳ Lenovo EasyCamera: Lenovo EasyC id=11 [slave keyboard (3)]
↳ Ideapad extra buttons id=12 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]

8 Answers

This is solution, that has worked for me:

sudo rmmod psmouse
sudo modprobe psmouse proto=imps

sudo modprobe -r psmouse && sudo modprobe psmouse proto=imps

To make it permanent, edit:

sudo gedit /etc/modprobe.d/options

and add line:

options psmouse proto=imps

NOTE:

This fix will make the touchpad be recognized as a mouse instead, which might remove some features specific to touchpads such as disable while typing.

Hope this helps.

I've been using 20.04 since august and just and at the end of August 2020, suddenly the touchpad/trackpoint stopped working on my Lenovo Thinkpad X1 extreme.

After struggling, getting it partially working, and eventually trying to re-install 20.04 3 or 4 times to fix the issue (initial install was fine), I found that the problem may have been introduced in the kernel 5.4.0-47-generic.

To work around this, I select the older kernel 5.4.0-42-generic at boot time by accessing the GRUB menu and going to Advanced Options.

Now I'm able to use the trackpad/trackpoint as before.

I still have a bit of a display issue with suspend, but at least I can work on my laptop again.

To configure the kernels and defaults to set, this Ask Ubuntu question is a good resource.

UPDATE

I raised a bug with ubuntu, and managed to resolve the issue in my case by changing the Config->Graphics Device value from Discrete Graphics to Hybrid Graphics. With Hybrid Graphics set in BIOS and running the lastest kernal/updates as of 2020-11-6 I'm able to use my trackpad/trackpoint.

You can try reinstalling touchpad driver (synaptics in your case):

sudo apt purge xserver-xorg-input-synaptics
sudo apt autoremove
sudo apt update
sudo apt install xserver-xorg-input-synaptics

Restart and check.

I solved my touchpad problem on Ubuntu 20.04 with this:

Edit (create it if doesn't exist) the psmouse.conf file:
```
sudo gedit /etc/modprobe.d/psmouse.conf
```
Add the line:
```
options psmouse synaptics_intertouch=1
```

Then run:

sudo modprobe -r psmouse && sudo modprobe psmouse

Disabling and enabling the touchpad in Settings somehow solves the problem.

Here's an easy and quick way to do solve the problem:

Just press Alt+F2 and enter the command r. This will be restarting your environment for a while and then everything will work properly.

I'm running into this situation every now and then on my Lenovo laptop. Trackpad suddenly stops working; sometimes the keyboard stops too. I can rescue things a bit with the virtual keyboard. ALt-F-R doesn't solve the problem. Reboots usually restore mouse/keyboard function. Recently, none of this worked, but plugging in the dongle of a Bluetooth mouse (I think) forced a bus rescan and restored mouse/keyboard function.

This just happened to me today with Ubuntu 20.04 5.4.0-100-generic kernel: just restarting the system with "shutdown -r now" fixed the issue.