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Old 11-02-2013, 01:34 PM   #1
senthilcaesar
LQ Newbie
 
Registered: Jul 2013
Posts: 8

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Angry wlan0: unknown interface: No such device


New Note 10

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.


[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
 
Old 11-02-2013, 02:56 PM   #2
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 17,104

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Try lsusb and see what the wifi is. We can start there.
 
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Old 11-02-2013, 03:00 PM   #3
senthilcaesar
LQ Newbie
 
Registered: Jul 2013
Posts: 8

Original Poster
Rep: Reputation: Disabled
[root@localhost Desktop]# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 10f1:1a43 Importek
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 8564:1000
Bus 003 Device 003: ID 04f3:0232 Elan Microelectronics Corp
 
Old 11-03-2013, 03:42 AM   #4
business_kid
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Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 17,104

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I updated the usb ids here and 8564 does not show at all. Is it a Name: JetFlash Transcend 16GB USB stick ?

Importek makes webcams.

I reckon RHEL 6 was an unwise choice of distro, as nobody seriously expects the server to be hanging out of a bleeding edge wifi card. Debian likewise, unless you go for alpha/unstable versions. Did you do a basic google?
http://ubuntuforums.org/archive/inde...t-2009077.html
 
  


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