Linux X260 special keys

I am attempting to make use of my f4, f7-f12 special keys, but am unable to find event/key codes for them. I do have thinkpad_acpi, and am able to use f1-f3, f5-f6. Do people have suggestions no how I can find their identifiers, to map them? So far the closest information I have found was here, but neither KEY_SEARCH or XF86Search would let f10 do anything when bound.

Unfortunately acpi_listen doesn't see these keys. :( Neither did xev.

I am on debian sid, with keel 4.6 manually added.