On a fresh (clean installation of Ubuntu 22.04.1 fully updated. Without making any changes whatsoever:
- X11 - typing automatically stops the touchpad from responding until typing is done.
- Wayland- typing automatically stops the touchpad from responding until typing is done.
My result also matches your libinput list-devices results with Disable-w-typing: enabled.
By default, Touchégg and xserver-xorg-input-libinput is installed on Ubuntu.
Touchégg is an app that runs in the background and transform the gestures you make on your touchpad or touchscreen into visible actions in your desktop.
Libinput: Now, there is something called “Touch jump detected and discarded” that can appear in the logs after you experience a cursor jump.
It’s not super common (I’ve not been able to recreate it), but this may be what you’re experiencing.
Some users experiencing this on Ubuntu have had success using a different kernel:
sudo apt-get install linux-oem-22.04
(kernel 5.17)
sudo apt-get install linux-oem-22.04c
(kernel 6.1.0)
But this is only going to help if you’re seeing “Touch jump detected and discarded” in the dmesg or journalctl logs.