The IdeaPad 5 14iil05 is a 14-inch Lenovo laptop with Intel's 10th generation processor.
Firmware
UEFI can be accessed by pressing F2
at the Splash screen. For a way to update it without Windows, see Flashing BIOS from Linux.
Touchpad
The touchpad works as expected starting from linux >= 5.8rc3 as long as Load system defaults
is disabled in the UEFI.
Battery conservation mode
Battery conservation mode can be enabled by installing ideapad-cmAUR.
Note: Battery conservation mode and Rapid Charge mode can be turned on from Windows using Lenovo Vantage program. It will stay turned on after booting on Linux.