Thanks for your reply!
My system is a Lenovo Ideapad Slim 3 16ABR8 (Ryzen 5 7430U).
I’m not sure how to update, or check the current version of, the BIOS from within Linux, I used to get BIOS update notifications through Lenovo software pre-installed like “Lenovo Vantage” on Windows, but I no longer have Windows installed.
Additional note:
An external keyboard does work after resuming from suspend, so the system itself is responsive, only the internal keyboard stops working.