IBM Thinkpad T420s

CPU: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz (2491.96-MHz K8-class CPU)

Wireless: iwn0: <Intel Centrino Ultimate-N 6300>

Wired: em0: <Intel(R) PRO/1000 Network Connection 7.6.1-k>

Graphics: Intel

USB both 2.0 and 3.0 OK

Bluetooth: Yes

acpi_ibm seems to work just fine. No issues noted.

suspend/resume does works with 'intel' and without 'sna' acceleration

devinfo -v