Solved: Problems with connecting ath9k to 802.11n network

So, I was at a friends house and tried to connect my Qualcomm Atheros AR9285 Wireless Network Adapter (ath9k driver on linux) to their wireless network (D-link DIR-615). It was connecting and then 10 seconds later disconnecting without ever properly establishing a connection. Output as below:

Not very nice. I browsed around on the internet but couldn’t find anything obvious, eventually by looking at the different options the ath9k kernel driver accepts I found the ath9k_hw_btcoex_disable option which seems to do the trick.

and it all works again.