Lenovo ThinkPad T420
This article covers the installation and configuration of Arch Linux on a Lenovo T420 laptop.
This laptop supports UEFI as well as the traditional BIOS.
Because this laptop has newer hardware than is currently supported with the official iso, its recommended that you try the testisos. The 2011.06.10 works fine.
The rest of the installation process can be followed with the Official Install Guide.
ACPI is well supported here. No obvious troubleshoots.
Unfortunately, tp_smapi is not yet supported on the Thinkpad T420.
CPU Frequency Scaling
This feature is fully supported with all the available processor models with this laptop.
Suspending and hibernating works as intended.
Media keys that work out of the box:
- Wireless On/Off
- Backlight Brightness settings
You must find a workaround and bind the keys yourself for the rest of them.