wifi boot gets stuck (ath9k)

[robinsmidsrod]

It might be broken, or just very slow. You can verify performance by going through the steps at http://ipxe.org/dev/driver and report back if you have issues on any of the tests. Remember to include the type of network you have (802.11a,b,g or n) and what kind of download speeds you get in your OS (for comparison). On a gigabit network 500MB file should take approx. 5s if everything is configured properly. Wireless is obviously slower. How much depends on several environmental factors, suck as radio noise/interference.

I would suggest you use iperf to test the bandwidth in the OS. It gives pretty accurate numbers.