We are currently trying to make a Wifi USB key (Edimax EW7811Un) working, but we have some issues.
This USB wifi key works with RTL8192CU driver, We added it in the kernel defconfig file (CONFIG_RTL8192CU =m), the driver was loaded but we can't find any wifi network.
When we plug the USB key :
[ 38.453736] usb 1-1.1: new high-speed USB device number 3 using ci_hdrc [ 38.651259] cfg80211: Calling CRDA to update world regulatory domain [ 38.730337] rtl8192cu: Chip version 0x10 [ 38.827338] rtl8192cu: MAC address: 74:da:38:6a:e4:da [ 38.832428] rtl8192cu: Board Type 0 [ 38.836605] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1 [ 38.842567] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin [ 38.850178] usbcore: registered new interface driver rtl8192cu [ 38.862832] rtlwifi: wireless switch is on
After that we run
ifconfig wlan0 up [ 46.680949] rtl8192cu: MAC auto ON okay! [ 46.719251] rtl8192cu: Tx queue select: 0x05 [ 47.113837] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
With ifconfig we can see wlan0
wlan0 Link encap:Ethernet HWaddr 74:DA:38:6A:E4:DA UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
But the scan does not give any results (Even if the wifi router is at 1m away)
root@colibri-imx6:~# iwlist wlan0 scan wlan0 No scan results
Have you ever encountered this issue? Did I miss something?