Lenovo IdeaPad 5 Touchpad (I2C) Not Working – ACPI Errors on Linux

Which kernel are you on?

uname -r

Scratch that, I see it in your O.P. : 6.14

Can you follow this guide, but Do Not User nomodeset.
Instead, use
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp=1"

Correction: Removed cms parameter as it is is unlisted in the documentation and may not function.

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