Dell XPS13, Ubuntu 18.04: Trackpad stopped working

[Awickert]

When I opened my laptop this morning (Dell XPS13, purchased in fall 2014), the trackpad no longer worked. No touchpad appears when typing "xinput list".

Submitting bug report per advice at https://wiki.ubuntu.com/DebuggingTouchpadDetection

Contents of "/proc/bus/input/devices" attached.

Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1855518

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Chris Guiver (guiverc)]

This reads like a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1854798

However with the missing logs - it's harder to assess. (Synaptics s3203)

[Awickert (awickert)]

Confirmed as duplicate: I can revert to the 4.15.0-70 kernel and the trackpad starts working again.

A strange thing happened when I tried to retrieve the log.

apport-collect 1855518

ERROR: The python3-launchpadlib package is not installed. This functionality is not available.

But then:
sudo apt install python3-launchpadlib
python3-launchpadlib is already the newest version (1.10.6-1).