I have Dell Latitude 7490 laptop. It has touchpad "DELL081C:00 044E:121F Touchpad". And it doesn't work in Kde neon 18.04 because of these changes in neon-settings package https://packaging.neon.kde.org/neon/settings.git/commit/?h=Neon/release&id=0229fa88fd4139b6a6f04b27c64aa4fb9f86e8e3 I can fix it by removing links or by installing synaptics driver which is default in 16.04. I think it would be better to leave libinput by default. Yes, KCMs do not support it, but it just works out of the box.
Does it work with 16.04?
Yes, it works with Ubuntu 16.04 (was pre-installed), Kde neon 16.04, Ubuntu 18.04.
Seems a bit strange that evdev would regress. Can you check what the following command outputs on 16.04: grep -e "Using input driver" /var/log/Xorg.0.log
ivan@neon:~$ grep -e "Using input driver" /var/log/Xorg.0.log [ 6.797] (II) Using input driver 'evdev' for 'Power Button' [ 6.810] (II) Using input driver 'evdev' for 'Video Bus' [ 6.811] (II) Using input driver 'evdev' for 'Power Button' [ 6.811] (II) Using input driver 'evdev' for 'Sleep Button' [ 6.812] (II) Using input driver 'evdev' for 'Integrated_Webcam_HD: Integrate' [ 6.813] (II) Using input driver 'evdev' for 'G-Tech Wireless Dongle' [ 6.813] (II) Using input driver 'evdev' for 'G-Tech Wireless Dongle' [ 6.814] (II) Using input driver 'evdev' for 'DELL081C:00 044E:121F Mouse' [ 6.815] (II) Using input driver 'synaptics' for 'DELL081C:00 044E:121F Touchpad' [ 6.909] (II) Using input driver 'evdev' for 'DELL081C:00 044E:121F UNKNOWN' [ 6.909] (II) Using input driver 'evdev' for 'DELL081C:00 044E:121F UNKNOWN' [ 6.911] (II) Using input driver 'evdev' for 'Intel HID events' [ 6.911] (II) Using input driver 'evdev' for 'Dell WMI hotkeys' [ 6.912] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'
Btw,'DELL081C:00 044E:121F Mouse' is a pointing stick
I think we'll pull in synaptics until we move to libinput, seeing as that fixes the problem
I can confirm the same problem on Lenovo x230. The touchpad started working after xserver-xorg-input-synaptics package was installed.
I can confirm that my touchpad isn't working on my inspiron 15 3000. Which came preinstalled with ubuntu. I will try to install the synaptic drivers from xorg to see if that also solves the problem. The generic 18.04 is working correctly.
If you're going to avoid libinput, you definitely need synaptics, not just evdev.
Update should be going live in the next couple of hours, assuming it passes auto QA. ISO will be refreshed probably in the next couple of days (everyone's away for our annual conference, so things are a bit slow) https://packaging.neon.kde.org/neon/seeds.git/commit/?h=Neon/release-lts_bionic&id=674b5776b21445f8b617c8502a2c369244d906b3