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Wlan0: unknown interface: No such device

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Operating Systems Linux Red Hat Wlan0: unknown interface: No such device
# 1  
Old 11-02-2013
Wlan0: unknown interface: No such device
Hi All,

Am using Toshiba Satellite C850-l5212 Laptop . I have installed RHEL6 server on it ( Linux 2.6.32-220.el6.x86_64 )

I Installed wireless driver ( linux_mac80211_0012.0207.2013.tar.bz2 ) and the installation went fine.

But when i do ifconfig wlan0 up its giving the below error . Could someoone please help me troubleshoot this thing.
Code:
[root@localhost ~]# ifconfig wlan0 up
wlan0: unknown interface: No such device

[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU

[root@localhost ~]# lspci | grep Net
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723

[root@localhost ~]# modprobe -l | grep -i wifi
kernel/drivers/net/wireless/iwlwifi/iwlcore.ko
kernel/drivers/net/wireless/iwlwifi/iwlagn.ko
kernel/drivers/net/wireless/iwlwifi/iwl3945.ko
kernel/drivers/net/wireless/iwmc3200wifi/iwmc3200wifi.ko

[root@localhost ~]# dmesg | grep iwl
iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
iwl3945: Copyright(c) 2003-2010 Intel Corporation

[root@localhost ~]# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:26:6C:11:31:A8  
          inet addr:192.168.0.105  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::226:6cff:fe11:31a8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2120 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2450 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1706740 (1.6 MiB)  TX bytes:382987 (374.0 KiB)
          Interrupt:16 

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:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:960 (960.0 b)  TX bytes:960 (960.0 b)

virbr0    Link encap:Ethernet  HWaddr 52:54:00:9D:F8:06  
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:4160 (4.0 KiB)

virbr0-nic Link encap:Ethernet  HWaddr 52:54:00:9D:F8:06  
          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:500 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)


[root@localhost ~]# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

virbr0    no wireless extensions.

virbr0-nic  no wireless extensions.


[root@localhost ~]# cat /etc/wpa_supplicant/wpa_supplicant.conf 
network={
            ssid="Airtel"
            #scan_ssid=1 //see note 3
            proto=WPA
            key_mgmt=WPA-PSK
            pairwise=CCMP TKIP
            group=CCMP TKIP WEP104 WEP40
            psk="5468515"
            priority=2
          }

[root@localhost ~]# ls -1 /etc/modprobe.d/
anaconda.conf
blacklist.conf
blacklist-kvm.conf
blacklist-visor.conf
dist-alsa.conf
dist.conf
dist-oss.conf
openfwwf.conf

Last edited by Scott; 11-02-2013 at 03:09 PM.. Reason: Use code tags, please...
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