Wlan0 Link Down

Have a ThinkPad Yoga 11e that I am trying to setup as an Wireless router/AP.
When I run show interfaces wireless wlan0
it tells me that wlan0 S=u and L=D

How do I get wlan0 L=u ?

Running on 1.3.2 (equuleus)


Setting mode to n instead of AC it starts working.
My wifi NIC is a AC card.

How do I tell wlan0 that it should use both 2,4GHz and 5GHz on the n standard?
I have set channel 1 (2,4GHz) only.
Can I just add the 5 GHz channel?