Bug 208945

Summary:	Touchpad/Keyboard not working on Fujitsu Lifebook U7410
Product:	Drivers	Reporter:	Matthias R (ling.richter)
Component:	Input Devices	Assignee:	drivers_input-devices
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	Intel
OS:	Linux
Kernel Version:	5.8.0-2	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	/proc/bus/input/devices

Description Matthias R 2020-08-17 18:32:56 UTC

Distribution: Manjaro 20.0.3

I'm not sure wheter these are actually two bugs. The system does not accept input from keyboard/touchpad after boot. However, the system ist not frozen (passwd cursor blinks, USB mouse works just fine).

After suspend/wake, the keyboard starts working. However, the touchpad does not and is not detected by dmesg. Setting "resetafter=0" in psmouse did not change anything. What should I try next?

Comment 1 Matthias R 2020-08-17 19:57:52 UTC

Created attachment 291999 [details]
/proc/bus/input/devices

This is the output of 'cat /proc/bus/input/devices' - as far as I can see, no touchpad is listed.

Comment 2 Matthias R 2020-08-21 14:52:00 UTC

So after some research I tried the kernel parameters i8042.noloop, i8042.nomux, i8042.nopnp and i8042.reset. The effect is that the keyboard works as expected and the touchpad is detected.

However, occasionally, the touchpad is detected as ps/2 logitech wheel mouse or as ps/2 generic mouse instead of the expected elantech touchpad. In any case, the touchpad never actually works, i.e. it does not send any signal when surveillanced by libinput debug-events.