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How to

If you want to use the fast WLAN 802.11n Standard with Ubuntu 11.04 you’ll need to choose the right driver.

The Ubuntu Wiki offers a nice driver/chip overview: http://wiki.ubuntuusers.de/wlan/karten
In my case:

DWA-160 A2 | USB | Atheros AR-9170 | ID:07d1:3c10

Normally Ubuntu use the ar9170usb driver, but there are probably connectivity problems. So let’s use the second “standard-driver” (Ubuntu >= 11.04) carl9170.

1. Therefore you just need to “blacklist” the first “standard-driver” ar917usb with this shell command:

echo 'blacklist ar9170usb' | sudo tee -a /etc/modprobe.d/blacklist.conf

2. restart your system

3. have a look at your wlan symbol and choose “connection information” -> here you will find now “carl9170″ as loaded driver

Jap, that’s all! Now WLAN runs with >150Mbit/s

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