Keyboard and touchpad stopped working after messing up with drivers

Question

I am new to Ubuntu and using 18.04 LTS. My touchpad wasn't working fine and the palm rejection didn't seem to work at all, so I did the steps mentioned here

sudo apt remove xserver-xorg-input-synaptics
sudo apt install xserver-xorg-input-libinput
sudo reboot

After the system reboot, the touchpad and keyboard stopped working alltogether.

What should I do to restore them?

Also before messing up with my driver my touchpad was using Synaptic drivers.

@mchid I can't because none of my keyboard or mouse is working,external keyboard or mouse doesn't work too. — codeBull, Mar 23 '20 at 11:42
See if you can get to a tty by pressing CTRL+ALT+F3 and if you can't, follow these instructions on how to boot into recovery mode and then reinstall synaptic from the console. This should allow access to run commands before the drivers even load. — mchid, Mar 23 '20 at 11:44
@mchid I enterd the recovery mode and tried to intall but it can't resolve the link.How do I make it connect to the network — codeBull, Mar 23 '20 at 12:05
It should be sudo systemctl start network-manager or just systemctl start network-manager if you are running as root or try restart instead of start. — mchid, Mar 23 '20 at 12:12

mchid · Accepted Answer · 2020-11-16T19:46:28.320

See if you can get to a tty by pressing CTRL+ALT+F3 and if you can't, follow these instructions on how to boot into recovery mode This should allow access to run commands before the drivers even load.

Once you boot into recovery mode and after you run the command to switch to read-write mode, run the following command to reinstall synaptic:

sudo apt install --reinstall xserver-xorg-input-synaptics

As for your touchpad problem (after you reinstall synaptics), you can modify the parameters of your touchpad device by using xinput commands or by modifying your synaptics configuration file.

xinput list

should list your devices and each device will have an "id" number.

For example, your touchpad may be listed as device id=12.

Then, you would run:

xinput list-props 13

This will list available parameters. Each parameter will have a number in parenthesis followed by setting values like 1,1 or something like that. To change the setting values, you would run a command like this (to set device 13, parameter 282, to a value of 1):

xinput 13 282 1

Search for xinput and libinput commands and settings for more information. Also, this won't be persistent so you'll have to run this as a startup script or locate the default settings file.

EDIT:

If you need to connect to a network, you can startup NetworkManager:

sudo systemctl restart network-manager

and if you don't have a network setup, you can follow these instructions to set up a new wireless or ethernet connection.

Upon running the command 'sudo apt install --reinstall xserver-xorg-input-synaptics', an error message is displayed that says it cannot fetch and resolve the link containing .in.archive.ubuntu.com .I guess It need an internet connection but how to load the network drivers — codeBull, Mar 23 '20 at 12:24

Keyboard and touchpad stopped working after messing up with drivers

1 Answers1