I got a TP-LINK USB wireless module - TL-WN821N, using Ubuntu 10.4 (same problems were also seen in 10.10).
From everything I've read online, the usb should work just fine, since the Atheros ar9170 is built into the kernel. However, when I plug it in, it is detected as a USB device, but there is no wlan associated with it, and basically - nothing happens.
Am I doing something wrong? what should I do so that the Atheros driver is associated with this device?
btw, on Windows it works fine (with the drivers).
$ uname -mr
$ lsb_release -d
Description: Ubuntu 10.04.2 LTS
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 017: ID 0cf3:7015 Atheros Communications, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ lsmod |grep ar9
ar9170usb 51296 0
ath 7611 1 ar9170usb
mac80211 205402 3 ar9170usb,iwl3945,iwlcore
cfg80211 126528 5 ar9170usb,ath,iwl3945,iwlcore,mac80211
led_class 2864 4 ar9170usb,iwl3945,iwlcore,sdhci