Touchscreen Issue Resolved

Hello,
I just installed Linux Mint 19.2. Bios 0.23 is also installed. How do I proceed to make the touchscreen to work? I copied the acpi_override file in the /boot directory. In what file do I add the “initrd /acpi_override” line? Is it in the /etc/default/grub
file? If so, where in that file? Thank you for your help, it is much appreciated!

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