Following logs show that your Ubuntu definitely thinks your laptop is
equipped with an ELAN touchpad (contrary to Windows opinion):
---------------------------------------------------------------------
cat /sys/bus/acpi/devices/{ELAN,SYNA,CRQ}*/modalias
acpi:ELAN0632:PNP0C50:
--------------------------------------------------------------------
cat /sys/bus/i2c/devices/*/name
Synopsys DesignWare I2C adapter
[...]
ELAN0632:00
----------------------------------------------------
cat /sys/bus/acpi/devices/{ELAN,SYNA,CRQ}*/status
0
15 - the only active state device is ELAN0632
0
0
Would you try blacklist drivers one-by-one:
1) blacklist elan_i2c
then check if this helps (somehow synaptics_i2c is triggered, so may be it is
just interfered by elan)
2) quit blacklisting elan_i2c
blacklist synaptics_i2c
check either...
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https://bugs.launchpad.net/bugs/1853277
Title:
Lenovo ThinkBook 14-IML Touchpad not showing up in
/proc/bus/input/devices
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