Linux Wireless Card driver installation

Environment in the notebook virtual machine 10.0 version, centos-6.5 Wireless card fast-fw300um

The first step is to view the chip LSUSB when you get the chip and then look at the kernel, if the kernel already has a chip module can not be installed, if not supported, then go to the chip website to download the Linux driver http://www.realtek.com.tw/ Default.aspx * * Although my wireless network card is fast production, but he did not give us the Linux driver, but the chip is provided with a driver, so to the chip website download driver * *

1. First, download the driver for the wireless network card on the official website, unzip and install it,

[email protected] rtl8188c_8192c_usb_linux_v4.0.2_9000.20130911]# make Installinstall-p-M 644 8192cu.ko/lib/modules /2.6.32-431.el6.i686/kernel/drivers/net/wireless//sbin/depmod-a 2.6.32-431.el6.i686

View

[Email protected] rtl8188c_8192c_usb_linux_v4.0.2_9000.20130911]# ll/lib/modules/2.6.32-431.el6.i686/kernel/ Drivers/net/wireless/total 11956-rw-r--r--. 1 root root 11667935 Jul 09:40 8192cu.ko see that the driver has been installed successfully, but to make the system aware it must be said that the module is loaded into the kernel

See the module that the system has loaded first lsmod |grep 8192

[[email protected] rtl8188c_8192c_usb_linux_v4.0.2_9000.20130911]# lsmodmodule                   Size   Used bynls_utf8                 1063  1 8021q                   20355  0 garp                     5703  1  8021qstp                      1626  1 garpllc                      4258  2 garp,stpfuse                     62472  2 vmhgfs                  37934   0 vsock                   33529  0

See no wireless drivers using modprobe 8192CU load Module 8192

[[email protected] ~]# modprobe 8192cu[[email protected] ~]# lsmod |grep 81928192cu 559722 0

You can see the load is ready.

The program can also be loaded after automatic boot

Then look at the port ifconfig-a can see one more WLAN0 port

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Enable WLAN0 Port ifconfig wlan0 up (you can see the wireless card light on)

Scan wireless network using command iwlist

Need to install package Wireless_tools

View link status Iwconfig

View Wireless networks Iwlist Wlan0 scanning

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Connecting wireless network encrypted access requires installation package Wpa_supplicant

[email protected] ~]# Yum--disablerepo=\\*--enablerepo=c6-media Install wpa_supplicant-y

Enter the user name and password to access the network

[Email protected] ~]# wpa_passphrase tyedus >>/etc/wpa_supplicant/wpa_supplicant.conf [email protected]#

(The user name entered is redirected to the WPA profile)

And look at the files and see if we have the data.

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Link Wireless Networks

[Email protected] ~]# wpa_supplicant-i wlan0-c/etc/wpa_supplicant/wpa_supplicant.conf-d Wext-bioctl[siocsiwap]: Ope Ration not permitted

View the linked network

[[email protected] ~]# iwconfiglo        no  wireless extensions.eth0      no wireless extensions.wlan0      ieee 802.11bgn  essid: "Tyedus"   nickname: ""            mode:managed  frequency:2.462 ghz  access  Point: 00:22:AA:FF:F8:D8              Bit Rate:300 Mb/s   Sensitivity:0/0             retry:off   rts thr:off   fragment thr:o ff          encryption key:****-****-****-****-****-*** *-****-****   security mode:open           power management:Off          link quality=29/100  signal  level=46/100  Noise level=0/100           rx invalid nwid:0  rx invalid crypt:0  rx invalid frag :0          tx excessive retries:0   invalid misc:0   missed beacon:0

You can see that the network is connected (under normal circumstances you can see the lights on the wireless card flashing)

* * Sometimes it's not even possible that the network signal is poor

* * If the middle link is broken, you can kill the process continue link

Pkill-9 wpa_supplicant

Now look at the network interface, find that there is no address, need to configure dynamic address

[[Email protected] ~]# dhclient wlan0wlan0     link encap: ethernet  hwaddr 0c:82:68:1e:48:fb             inet addr:192.168.2.27  Bcast:192.168.2.255  Mask:255.255.255.0           inet6 addr: fe80::e82:68ff:fe1e:48fb/64  scope:link          up broadcast running  multicast  mtu:1500  metric:1           rx packets:276 errors:0 dropped:1273 overruns:0 frame:0           tx packets:7 errors:0 dropped:18 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:81123  (79.2 kib)   TX bytes:31608  (30.8  kib)

This time ping, found that the WAN has been

[Email protected] ~]# ping Www.baidu.comPING www.a.shifen.com (61.135.169.121), bytes of data.64 bytes from 61.135. 169.121:icmp_seq=1 ttl=54 time=58.1 ms64 bytes from 61.135.169.121:icmp_seq=2 ttl=54 time=189 ms64 bytes from 61.135.169 .121:icmp_seq=4 ttl=54 time=30.1 ms64 bytes from 61.135.169.121:icmp_seq=5 ttl=54 time=48.3 ms

However, the linked command and dynamic address are manually configured and cannot be connected after rebooting, so add the link command to the boot script

[Email protected] ~]# echo "wpa_supplicant-i wlan0-c/etc/wpa_supplicant/wpa_supplicant.conf-d wext-b" >>/etc/ rc.d/rc.local [[email protected] ~]# echo "Dhclient wlan0" >>/etc/rc.d/rc.local

View boot script [[email protected] ~]# vim/etc/rc.d/rc.local

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And then charge the test.

Init 6

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There is a problem finding the gateway

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Delete the gateway to the wired network card

[Email protected] ~]# Vim/etc/sysconfig/network-scripts/ifcfg-eth0

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And then restart the test.

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DNS is correct

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is right.

This indicates that the wireless network configuration was successful

This article is from the "Supervisory Authority" blog, please be sure to keep this source http://shuoshuo234.blog.51cto.com/10531943/1676149

Linux Wireless Card driver installation