{{tag>[archlinux wifi]}}

=====Archlinux - Configure wifi=====
  * Wifi<->USB: {{::awus036nha.pdf|Alpha AWUS036NHA}}
  * SBC: ODROID U3
  * OS: Archlinux - kernel 3.8.13.27-1-ARCH
  * Country: The Netherlands

====Install prerequisites====
  * Install packages: <code>pacman -S dialog wpa_supplicant</code>
====Configure regulatory domain====
  * Install packages: <code>pacman -S crda wireless-regdb</code>
  * Reboot
  * Check the boot log to make sure that CRDA is being called by cfg80211: <code>dmesg | grep cfg80211</code>
  * Check current domain: <code>iw reg get</code>
  * Set country: <code>iw reg set NL</code>
  * Query list of channels and power to see if change was succesfull: <code> iw list | grep -A 15 Frequencies:</code>
  * To make this permanent, edit **/etc/conf.d/wireless-regdom** <code>WIRELESS_REGDOM="NL"</code>
 
====Configure WLAN with netctl====
  * Check if hardware is recognized by kernel: <code># dmesg |grep ath9k
[  178.742553] usb 1-3.1: ath9k_htc: Firmware htc_9271.fw requested
[  178.743195] usbcore: registered new interface driver ath9k_htc
[  179.032544] usb 1-3.1: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
[  179.267660] ath9k_htc 1-3.1:1.0: ath9k_htc: HTC initialized with 33 credits
[  179.465788] ath9k_htc 1-3.1:1.0: ath9k_htc: FW Version: 1.3</code>
  * Generate WLAN profile: <code>wifi-menu -o</code>
  * Enable for auto-start: <code>netctl reenable wlan0-<profile></code>