Re: wifi troubleshooting

On 03/26/2011 07:40 AM, Adam Tong wrote:
Hi,

below you'll find the output of ifconfig and iwconfig.

What is the output of

iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off

What is the output of

ifconfig

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:480 (480.0 b) TX bytes:480 (480.0 b)

Thank you



If you are still using the rt2870 based USB wifi device, please run

lsmod | grep rt2

and show the output.

Also, show be sure that you have configured
/etc/wpa_supplicant/wpa_supplicant.conf correctly.
Example below:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

# ap_scan=1
ap_scan=2

network={
bssid=aa.bb.cc.dd.ee.ff # This is a fictitious MAC address
of the router. You must change it to the real MAC address of the router.
ssid="Your_SSID"
mode=MANAGED
key_mgmt=WPA-PSK
proto=WPA2
pairwise=CCMP
group=CCMP
scan_ssid=1 # only needed if your access point uses a hidden ssid
psk="AN_ASCII_STRING_OF_RANDOM_CHARACTERS_UP_TO_126_LONG"
}


On my system, I have disabled NetworkManager because it
always starts wpa_supplicant with the wrong arguments.

Also, be sure your ifcfg-wlan0 is created properly.
Example below.

BOOTPROTO=none
DEVICE=wlan0

ESSID=Your_WIFI_Network_Name
BSSID=aa:bb:cc:dd:ee:ff # This is to substituted by the MAC address
of your acce
UUID=48a80359-5bb1-ccfe-d847-b4485bbdae59
CHANNEL=11 # Choose your favorite (least noisy) channel
IPADDR=Your_IP_Address_On_The_LAN such as 10.0.0.20
GATEWAY=The_Gateway(i.e.-Router_ip_adress) such as 10.0.0.20
NAME="TheCrappy-ATT-Router"
NETMASK=255.255.255.0
RTS=2346
FRAG=2346
IPV6INIT=no
MODE=Managed
RATE=auto
TYPE=Wireless
USERCTL=yes
NM_CONTROLLED=no
PREFIX=24
ONBOOT=no

Good Luck.

JD
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