Trackpad/Keyboard issues after resume

[jheise]

I'm seeing problems with the trackpad and keyboard after resume on occasion, i'll open the lid and the password field on the lock screen immediately fills up, if i hit a key the phantom key presses stop and i can log in. After this happens mouse/trackpad doesnt work, the cursor doesnt show up, swiping on the trackpad doesnt seem to move the cursor, however clicking still works and the cursor can be moved with the touchscreen.

Has anyone else run into this?

[dror-g]

Didn't experience this specific issue, but fiddled with xinput and synaptic for other trackpad issues.
I'd suggest you look into both, maybe try switching between them. For me xinput (ubuntu 22.04 default) worked better.

xinput list to show devices. If you see Mouse and Touchpad there than you're using xinput / libinput.
sudo lshw |grep synaptic to check for Synaptic.

If you're using X11, I think you switch driver by editing /etc/X11/Xsession.d/90touchpad.conf.

A few kernel modules that are related (on my late-2019 Blade):

intel_lpss_pci
i915
i2c_i801
i2c_designware
i2c_hid_acpi
i2c_hid

Perhaps try reloading them after resume, see if that helps (sudo rmmod i2c_hid then sudo modprobe i2c_hid).

Just realized this question is two years old 🤣
Maybe someone will find this useful.