Touchpad not detected in 'Lenovo V15-IIL model 82C5' after installing Ubuntu 20.04

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Just to let you know, I got the touchpad on my Lenovo V15-IIL to work with these boot parameters: i8042.nopnp=1 pci=nocrs

(Latest Bios dkcn29ww, Ubuntu Kernel 5.4.)

Hope this helps others, until the touchpad model gets recognized with the default parameters. I got this info from https://askubuntu.com/a/1247264 where someone did this with his S145-15IIL.

It worked! I added a few parameters to grub before but the did not worked.

For future reference to others:

- Access the grub configuration file by typing in a terminal: sudo nano /etc/default/grub
- Find the line "GRUB_CMDLINE_LINUX_DEFAULT" and append i8042.nopnp=1 pci=nocrs
- Save the file and do in the terminal update

It worked! I added a few parameters to grub before but the did not worked.

For future reference to others:

- Access the grub configuration file by typing in a terminal: sudo nano /etc/default/grub
- Find the line "GRUB_CMDLINE_LINUX_DEFAULT" and append i8042.nopnp=1 pci=nocrs
- Save the file and update grub with sudo update-grub
- restart

@Federico, @Christian, is "pci=nocrs" really necessary for you? Could you try removing that from the parameters and see if touchpad is still probed?

And, could you have a try https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1881322 ? And please remove additional parameters while trying. The package is trying to add "i8042.nopnp=1" automatically based on DMI board info. The ppa is still building and may take hours to complete.

Hi You-Cheng,
thanks for your support.
I have removed pci=nocrs, but the touchpad did not work after reboot.

You-Cheng, i also tried removing pci=nocrs and rebooting and it did not work either.

I would like to try https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1881322, should I delete all the grub parameters that i added?

To add further information:

- With the parameters I currently have, and with Mouse Click Emulation set in "Area" (in Tweaks), the right mouse button and middle mouse button does not work (In xev i can see that all are mapped to button 1) but the gestures as two finger scrolling work fine.
- With Click Emulation set in "Fingers", xev shows button 1, button 2 and button 3 with one, two and three fingers, respectively.
- The Option "Disable Touchpad while Typing" does not work with any of the previous configurations.

Also, I think this is unrelated:

- Sometimes when I boot ubuntu, the sound does not work, even the icon in the sound settings (top right corner) does not show, and the volume with the Fn keys does not change.
- When you try to open an app (e.g. Firefox), a folder or a terminal, it needs around a minute to work for the first time, then you can open anything normally.
- When I try to shutdown or restart, it shows a recurrent message "[ 56.603594] snd_hda_intel 0000:00:1f.3: No response from codec, resetting bus: last cmd=0x202f8100"
- The initial number rises (e.g. the second message is [ 57.607631]) and the hexadecimal number also changes.
- I have to force the shutdown. It usually requires one restart to fix, but sometimes i get in this situation two times in a row.

Hi, In my case it was solved after adding both parameters, "i8042.nopnp=1 pci=nocrs" I tried adding "i8042.nopnp" alone and it didn't work.

"i8042.nopnp=1 pci=nocrs" does not cure the problem, it only allows the touchpad to be recognized as mouse pointer.
In *buntu, under "mouse and touchpads" it is shown as a mouse and no hint of a touchpad.
So only right and left click plus cursor movement will work, nothing else.

There are some strange kernel panics in the log file that might be related to this problem, please see attachment. (panics will occur with 5.4, 5.6 and 5.7.7)

@Federico, please help attach your acpi dump info:

  $ sudo apt install acpica-tools
  $ sudo acpidump -o acpi.dump

And attach that `acpi.dump` file.

Dear Team ,
I have a Lenovo laptop v15 IIL and i have installed 20.04 and touchpad driver is not working , Team please help on same

Thanks And Regards
Sunny Sharma
email id -<email address hidden>
ph no -+91 8920890908

I'm facing the same problem. I just finished installing 20.04, and not only wireless (which is a more common issue), even my touchpad does not work. In fact, it has not been detected as I followed this:

https://wiki.ubuntu.com/DebuggingTouchpadDetection

and `cat /proc/bus/input/devices` does not list anything containing `touchpad`.

Hope there is a workaround for this.

i8042.nopnp=1 pci=nocrs these are mine flags for being able to use the touchpad but after suspend the touchpad is gone again.

and This is my dump file( IT's not ubuntu, it's manjaro but I'm sure that it serves to you too) I'm using kernel 5.10.5-1-MANJARO in testing branch. It occurs to me from the start of using this pc, if no flags are in the grub there is no touchpad.

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

This workes for me on a Lenovo V15-II

Edit `/etc/default/grub` and change the line "GRUB_CMDLINE_LINUX_DEFAULT" adding "i8042.nopnp=1" within the quotes.

Run `sudo update-grub`

Reboot.

Hi

We have updated this method and but still, it's not working.

Any Other fix we have.

We have bought 15 laptops Lenovo v14 11 Generation.