Also. http://www.thinkwiki.org/ is a very good resource for running Linux on Thinkpads (though everything worked so perfectly with my T420 and Wheezy I actually never needed it!).
Also. http://www.thinkwiki.org/ is a very good resource for running Linux on Thinkpads (though everything worked so perfectly with my T420 and Wheezy I actually never needed it!).
I replaced the HDD with an SSD, added RAM, and replaced the DVD drive with an extra bay battery. If you gave me a pile of cash to spend on hardware, the only thing I'd do is trade out for a bigger SSD.
Using the fingerprint reader requires adding a ppa and installing a package:
http://www.thinkwiki.org/wiki/How_to_enable_integrated_finge...
I use a Thinkpad T430 with Debian unstable. All hardware works as intended. I purchased mine with the Intel wireless, and that requires a non-free firmware blob. Optimus works, but if there are issues it can be disabled in the BIOS.
Apart from that the webcam works and audio output as well and we're all pretty happy. (Ubuntu, Debian wheezy, Arch, OpenBSD)