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Fixing ThinkBook Trackpad On Fedora

I recently purchased a new Lenovo ThinkBook 14 and installed Fedora, unfortunately there is an issue with BIOS preventing the trackpad from working correctly.

Luckily I came across this bug report with a solution, however, since I was using Fedora a few tweaks had to be made. I also knew from another RedHat bug report it was possible for it to work on Fedora.

Below are the steps I took to accomplish this (assume all are sudo):

  1. dnf install acpidump iasl cpio
  2. acpidump -b
  3. iasl -d dsdt.dat
  4. vim dsdt.dsl
  5. Locate TPVD == 0x45 and comment out block like below:

     Method (_STA, 0, NotSerialized)  // _STA: Status
         //If ((TPVD == 0x45))
               Return (0x0F)
           //Return (Zero)
  6. On line 21, increment the version number like so: DefinitionBlock ("", "DSDT", 2, "LENOVO", "ICL ", 0x20170002)
  7. iasl -sa dsdt.dsl
  8. cp dsdt.aml /boot/acpi_fixed.aml
  9. vim /boot/efi/EFI/fedora/custom.cfg and add to the file acpi /acpi_fixed.aml
  10. grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
  11. vim /etc/modprobe.d/blacklist.conf and add the following:

    #Allow module elan_i2c to control the touch pad
    blacklist i2c_hid
  12. Reboot

Good luck!