Tweaks for Thinkpad x240 (and maybe other models)
Unlock screen with fingerprint reader (still need keyring)
sudo apt install fprintd
Get more battery life (sometimes double)
sudo apt install auto-cpufreq
TODO: prevent keyboard backlight from comming on from sleep
https://askubuntu.com/questions/1028368/how-to-prevent-the-keyboard-backlight-from-turning-on-when-the-laptop-is-woken-f
I think turning off "Dim Display When Idle" on battery power section fixes it.