Ubuntu 20.04 touchpad doesn't work on new Lenovo Ideapad

Question

I have just bought a new Lenovo laptop. I've installed the Ubuntu 20.04, but my touchpad doesn't work.

Here is the result of xinput command:

Do you have any idea how to fix it?

A little more info will be required. Which Lenovo do you have? They make a lot of devices. You had mentioned that you've tried many things, but could you outline some of the fixes you've tried that have failed? This will allow someone to offer a possible solution that you have not tried that will work for you specific Lenovo — , Mar 03 '21 at 15:09

score 0 · Answer 1 · answered Mar 03 '21 at 15:24

$xinput shows the available input devices in the machine. but, the machine hava a data for it. So,Maybe it is hardware(touchpad) problem.
Maybe Hardware is good,just reboot and try any other OS.
else, see the settings for touchpad(Settings > mouse and touchpad> touchpad) is enable/disable. Many lenovo laptop's F6(function key) for enable or disable touchpad.

score 0 · Answer 2 · answered Mar 03 '21 at 20:04

0

I have a Lenovo t420 that has touchpad problems. I run this script at startup:

DEVICENUM=$(xinput | grep SynPS/2 | grep 'id=' |  cut -d= -f2 | cut -b 1,2)
printf "\033c"
xinput set-prop $DEVICENUM "Device Enabled" 0
xinput set-prop $DEVICENUM "Device Enabled" 1
echo "done"

answered Mar 03 '21 at 20:04

Robert Baker

267

do you have to run this everytime? – mLstudent33 Mar 13 '21 at 07:06
I run in at startup with a chron, yes. – Robert Baker Mar 13 '21 at 22:13
That is strange because I had a T420 Thinkpad and never had issues with the touchpad but now with an Ideapad the touchpad is not even recognized. – mLstudent33 Mar 13 '21 at 22:56

score 0 · Answer 3 · answered Apr 26 '22 at 17:08

sudo gedit file /etc/default/grub

Replace line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with GRUB_CMDLINE_LINUX_DEFAULT="pci=nocrs quiet splash"
Save file /etc/default/grub
Execute update-grub
Reboot

As it's commented here

lenovo IdeaPad-3-14ARE05 Touchpad not working. Ubuntu 20.04

It works for me on 20.04

score 0 · Answer 4 · edited Sep 16 '22 at 15:59

I have Ubuntu 20.04 and I have faced the same problem. My touchpad was not working after changing my OS from Windows 11 to Ubuntu 20.04/18.04. In Settings, only the mouse options were visible, not the touchpad ones.

If the problem is with your hardware, you must visit the nearby customer care service. If it's not a hardware issue, then there is no problem with your drivers also.

All you need to do is just make a small change on your default /etc/default/grub file. That's how I resolved the problem. Follow these steps:

Open a terminal.
Run the following command:
```
sudo gedit file /etc/default/grub
```
The /etc/default/grub text file will be opened. If it is empty, navigate to its adjacent tab.

Replace the line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

with:

GRUB_CMDLINE_LINUX_DEFAULT="pci=nocrs quiet splash"

Click on Save and return to the terminal.
Run the following command:
```
sudo update-grub
```
Reboot.

Your issue will be resolved. Your touchpad will be working.

Ubuntu 20.04 touchpad doesn't work on new Lenovo Ideapad

4 Answers4