I just installed Ubuntu 18.04.3 and found the two-finger scrolling way too fast. So I followed the instructions in this thread and ran

sudo apt install xserver-xorg-input-synaptics

But that required xserver-xorg-core, so I installed that as well. I rebooted and, once X started, I had no keyboard, but the mouse was working.

So I found this thread and it seemed very similar to my case. However, my grub menu boot allowed only for a recovery boot with no internet access. So, while I could remove the xserver-xorg-input-synaptics, I had no way to reinstall the ubuntu-desktop and xserver-xorg.

I could still boot the machine, but maybe due to the above inability to reinstall, as soon as I logged in in X, I was thrown out again, to the login screen.

The second thread mentioned that ownership of ~/.Xauthority in my home folder could be the reason, but I had no such file!

In the end, I had to reinstall from the ISO – no big deal as it was a new install. I still have no ~/.Xauthority in my home folder. And now I'm quite hesitant to install input drivers – without any way to ssh into my machine, I'm helpless without a keyboard!

  • If you "just installed" it, wouldn't it be easier and faster to re-install on this case and go about solving the scrolling issue via built-in settings or some other method, if possible? – code_dredd Sep 25 '19 at 21:31
  • The built-in settings that Ubuntu comes with lets me choose the speed of the touchpad cursor, and lets me turn the two-finger scrolling on or off. However, it does not let me choose the scrolling speed. Hence why I tried the solution mentioned above. – Zimeon Sep 26 '19 at 8:26

What worked for me was completely removing xserver-xorg-input-synaptics

  1. Activate the on-screen keyboard (Settings => Universal Access => Screen Keyboard)

  2. Removing xserver-xorg-input-synaptics

    sudo apt remove xserver-xorg-input-synaptics
  3. Installing xserver-xorg-input-all

    sudo apt update
    sudo apt install xserver-xorg-input-all
    sudo apt ugrade
  4. Restarting my system

  • That would have worked if I'd known to activate on-screen keyboard to remove xserver-xorg-input-synaptics But since I did that from a regular terminal, I was from there unable to log into X – I was just thrown out. And the grub terminal had no internet access, so I couldn't install anything. – Zimeon Feb 16 '20 at 8:27
  • This worked for me but luckily I did not have to uninstall xserver-xorg-input-synaptics since this driver is necessary to use the touchpad on my lenovo – mjabei Sep 14 '20 at 10:38

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