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Things may calm down a bit if the following file is created in /etc/modprobe.d (eg: sudo<br />
vi /etc/modprobe.d/smscnonturbo.conf) and then the <strong>RPi</strong> rebooted:<br />
smscnonturbo.conf:<br />
options smsc95xx turbo_mode=N<br />
This fix may slow down wired LAN performance but help with wireless and reduce the<br />
frequency of the debug messages - YMMV. If you want to undo this fix, just delete the<br />
file (sudo rm /etc/modprobe.d/smscnonturbo.conf) and reboot.<br />
Firmware requirements<br />
If no wlanx device is shown, you might need to download firmware for your USB wifi<br />
device (or track down other compatible drivers if they are available). To confirm this,<br />
check the dmesg output when you plug in your adapter - typing dmesg at the command<br />
prompt may be sufficient - and look for information related to your adapter - the example<br />
dmesg output below shows what is seen in the event of the TP-Link firmware not being<br />
present - notice that the name of the required firmware file is given (htc_9271.fw), the<br />
driver name (ath9k_htc) and an error -22 message:<br />
usb 1-1.2.4.2: ath9k_htc: Firmware - htc_9271.fw not found<br />
ath9k_htc: probe of 1-1.2.4.2:1.0 failed with error -22<br />
usbcore: registered new interface driver ath9k_htc<br />
Armed with this information, try a web search for 'debian 6' and the name of the driver or<br />
driver file and/or head over to http://linuxwireless.<strong>org</strong>. Also check the links at the top of<br />
this page.<br />
Power requirements<br />
If you experience erratic network, keyboard, mouse or Raspberry Pi operation when<br />
using a USB wifi dongle, check that whatever is powering your <strong>RPi</strong> and/or USB hub can<br />
deliver sufficient current for everything that's connected together. The first setup tried<br />
with the TP-Link adapter had it, a keyboard, mouse and the <strong>RPi</strong> all connected to a Trust<br />
7-port powered USB hub with a 5V 2A power supply, but in this configuration the mouse<br />
stopped working. In this case, the fix was to power the <strong>RPi</strong> from a separate 5V 1A phone<br />
power adapter.<br />
wpasupplicant deamon failed to start<br />
a) If you get this error when you attempt to
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