How can I fix this? The solutions suggested in 1 and 2 did not work for me.

The only device that looks like it could be my trackpad is this one cat /proc/bus/input/devices:

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Ideapad extra buttons"
P: Phys=ideapad/input0
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/VPC2004:00/input/input5
U: Uniq=
H: Handlers=rfkill kbd event5 
B: EV=13
B: KEY=81000800100c03 4400000000300000 0 2
B: MSC=10

OS: Ubuntu 20.04 LTS

Touchpad worked under Windwos.

  • It means that the touchpad is not supported by Linux yet. – Pilot6 Jun 10 at 17:27
  • fuck. What can I do? Is there anything? – User12547645 Jun 10 at 18:12
  • perhaps you try the answer i provided for your second link - even though it is a differnet model you might be lucky and they used the same touchpad ;) – db429 Jun 18 at 23:41
  • found something: maybe that works ;) forums.lenovo.com/t5/Ubuntu/… – db429 Jun 19 at 1:04
  • Did not work for bios DJCN16WW and kernel 5.4.0-37-generic – User12547645 Jun 19 at 9:31

This is a bug in the laptops BIOS. You can fix the acpi tables by following comment 66 and 96 in this ubuntu bug:


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  • 2
    Edit and include the relevant parts of the link in your answer – Greenonline Aug 22 at 2:49

We were also facing the same problem with Lenovo ThinkBool-14IIL, We just update the kernel as per the below link and the touchpad start working for us with the latest bios version.


Try your luck with this. and if it works, do not forget to say thanks to Kai.

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