thinkpad t420 centos 配置無線網

1) check which wireless network card
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
RTL8188CE and RTL8192CE shared the same driver
2) download and install driver
download compat wirless driver

http://linuxwireless.org/en/users/Download/stable#compat-wireless_3.3_stable_releases

this version is ok: compat-wireless-3.3-2-n.tar.bz2
$tar xjf compat-wireless-3.3-2-n.tar.bz2
$ cd /compat-wireless-3.3-2-n
$su
#./scripts/driver-select rtlwifi
#make
#make install

#reboot
3) need the firmwire
then find error,
#dmesg | grep rtl8192ce

rtl8192ce 0000:03:00.0: firmware: requesting rtlwifi/rtl8192cfw.bin
rtl8192ce:rtl92c_init_sw_vars():<0-0> Failed to request firmware!
rtlwifi:rtl_pci_probe():<0-0> Can't init_sw_vars.

4) download the driver from the vendor

http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=48&PFid=48&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#RTL8188

CE

the version: 92ce_se_de_linux_mac80211_0005.1230.2011.tar.gz
$ tar xzf 92ce_se_de_linux_mac80211_0005.1230.2011.tar.gz
$cp rtl_92ce_92se_92de_linux_mac80211_0005.1230.2011/firmware/rtlwifi /lib/firmware

#rmmod rtl8192ce
#modprobe rtl8192ce
#dmesg | grep rtl8192ce

5) the driver work, and pop a message said: the wirelees work now!!!

6) ifconfig wlan0 up