Ubuntu
linux package

  1. Bug #1861610
  2. Comment #133

Comment 133 for bug 1861610

Revision history for this message
ANOMM (anomm) wrote :

Appending "i8042.nopnp=1 pci=nocrs" to boot parameters worked for the touchpad issue on the Lenovo V14-IIL.

Following are the steps I've followed:
1.) Open the file /etc/default/grub for editing, for example by running
      sudoedit /etc/default/grub
2.) Add to the line beginning GRUB_CMDLINE_LINUX_DEFAULT: "i8042.nopnp=1 pci=nocrs" so that it reads:
      GRUB_CMDLINE_LINUX_DEFAULT="i8042.nopnp=1 pci=nocrs"
     ** If other parameters are there between the double quotes, it may be OK to leave them.
3.) Save the file and exit
4.) Run this command to update the GRUB configuration:
      sudo update-grub
5.) Reboot

Other relevant threads for this:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881322/comments/5
https://askubuntu.com/questions/1206190/elan-touchpad-not-working-on-lenovo-ideapad-with-ubuntu-16-04
https://forums.lenovo.com/t5/Ubuntu/ThinkBook-14-IML-ELAN-TouchPad-Not-Recognized-Ubuntu/m-p/4622518?page=2#5104555

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861610/comments/66
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861610/comments/96