Touchpad not working on lenovo ideapad 120

hello i am new, after installing linux om my old laptop. my touchpad is not working

specify the Model 120? 120s?

example:
|Ideapad 3-15ARE05|2020-10-27|Yes|Yes|Untested|Yes|Yes|Yes|Touchpad requires blacklisting elants_i2c
fingerprint sensor 04f3:0c57 is not supported

https://wiki.archlinux.org/title/Laptop/Lenovo#IdeaPad_series

PC Ultra-Portable Lenovo IdeaPad 120S-14IAP 14

“Hinweis: Sie können das Touchpad durch Drücken von F6 ( ) aktivieren/deaktivieren.”

with F6 activate/deactivate works not ?

I cannot recognize any abnormalities

How do you know?

Is that info on the touchpad?

System information with such requests:

inxi -zv8

f6 is not working for me

Machine:
Type: Laptop System: LENOVO product: 81A5 v: Lenovo ideapad 120S-14IAP
serial: Chassis: type: 10 v: Lenovo ideapad 120S-14IAP

Mobo: LENOVO model: LNVNB161216 v: SDK0J40700WIN
serial:
part-nu: LENOVO_MT_81A5_BU_idea_FM_ideapad 120S-14IAP
uuid: UEFI-[Legacy]: LENOVO v: 6GCN32WW X64
date: 05/15/2019

be proud of what you gave

but please:
just give what you are asked for to give:

inxi -zv8

What the f is wrong with you - reading the request and information - but then just ignoring it … just not not giving it …

If you don’t want help - just don’t ask for it.
If you do ask for it, you might need to provide some info. …

blacklist elan_i2c 

https://bbs.archlinux.org/viewtopic.php?id=268508

You can test it safe with grub. Press e at boot and insert before quit

modprobe.blacklist=elan_i2c

or create a file in /etc/modprobe.d with

blacklist elan_i2c

"This is the first time renzo has posted "

Welcome renzo

Thanks for your feedback, I will take this into account but hopefully we can be polite to each other.

I tried something to look at the traction pad, can you take a look and see if it is there?

libinput list-devices
Device:                  Power Button
Kernel:                  /dev/input/event2
Id:                      host:0000:0001
Group:                   1
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  Video Bus
Kernel:                  /dev/input/event8
Id:                      host:0000:0006
Group:                   2
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  Lid Switch
Kernel:                  /dev/input/event0
Id:                      host:0000:0005
Group:                   3
Seat:                    seat0, default
Capabilities:            switch
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  Power Button
Kernel:                  /dev/input/event1
Id:                      host:0000:0001
Group:                   4
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  YICHIP Wireless Device
Kernel:                  /dev/input/event3
Id:                      usb:3151:3020
Group:                   5
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  YICHIP Wireless Device Mouse
Kernel:                  /dev/input/event4
Id:                      usb:3151:3020
Group:                   5
Seat:                    seat0, default
Capabilities:            pointer 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             disabled
Nat.scrolling:           disabled
Middle emulation:        disabled
Calibration:             n/a
Scroll methods:          button
Scroll button:           BTN_MIDDLE
Scroll button lock:      disabled
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          flat *adaptive custom
Rotation:                0.0
Area rectangle:          n/a

Device:                  YICHIP Wireless Device System Control
Kernel:                  /dev/input/event6
Id:                      usb:3151:3020
Group:                   5
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  YICHIP Wireless Device Consumer Control
Kernel:                  /dev/input/event7
Id:                      usb:3151:3020
Group:                   5
Seat:                    seat0, default
Capabilities:            keyboard pointer 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           disabled
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  Elan Touchpad
Kernel:                  /dev/input/event11
Id:                      i2c:04f3:0079
Group:                   6
Seat:                    seat0, default
Size:                    104x68mm
Capabilities:            pointer gesture
Tap-to-click:            disabled
Tap-and-drag:            enabled
Tap button map:          left/right/middle
Tap drag lock:           disabled
Left-handed:             disabled
Nat.scrolling:           disabled
Middle emulation:        disabled
Calibration:             n/a
Scroll methods:          *two-finger edge 
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           *button-areas clickfinger 
Clickfinger button map:  left/right/middle
Disable-w-typing:        enabled
Disable-w-trackpointing: enabled
Accel profiles:          flat *adaptive custom
Rotation:                n/a
Area rectangle:          n/a

Device:                  Ideapad extra buttons
Kernel:                  /dev/input/event9
Id:                      host:0000:0000
Group:                   7
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

Device:                  AT Translated Set 2 keyboard
Kernel:                  /dev/input/event5
Id:                      serial:0001:0001
Group:                   8
Seat:                    seat0, default
Capabilities:            keyboard 
Tap-to-click:            n/a
Tap-and-drag:            n/a
Tap button map:          n/a
Tap drag lock:           n/a
Left-handed:             n/a
Nat.scrolling:           n/a
Middle emulation:        n/a
Calibration:             n/a
Scroll methods:          none
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           none
Clickfinger button map:  n/a
Disable-w-typing:        n/a
Disable-w-trackpointing: n/a
Accel profiles:          n/a
Rotation:                0.0
Area rectangle:          n/a

:arrow_down:

Sometimes you can switch between I2C and PS/2 mode in BIOS.

Try what @weingeist suggests.

Although it has been detected, there seems to be some bug that is hindering communication. Perhaps also a faulty ACPI entry.