Hello,

does it work if you edit your grub file /etc/default/grub with:
  sudo nano /etc/default/grub

And add the "i8042.reset" option in the following line, to change it from:
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

into something like:
  GRUB_CMDLINE_LINUX_DEFAULT="i8042.reset quiet splash"

Save the file and exit, then execute:
 sudo update-grub

Please attach the dmesg output after reboot with this option added to
your grub. Thanks!

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1909898

Title:
  No response from TouchPad in 'Acer Aspire 5 A517-52G-79Z5' after
  installing Ubuntu 20.04.1 LTS

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