Lenovo ThinkpadR61i Ubuntu wireless Internet access

I updated the Ubuntu system today without checking the list, which made the wireless Nic unable to work properly. Some laptop users with wireless network adapters of the Atheros series may suffer a lot, so let's summarize them here. NIC: it is detected in Linux as AR242X, which should be a chip. COMPUTER: ThinkpadR61i7732BGC wireless network card does not work, mainly for three reasons: 1. the driver is not successfully installed. 2. Conflicts between drivers (even if there is no conflict, a conflict may occur after updating one of the two) 3. Network-ma

I updated the Ubuntu system today without checking the list, which made the wireless Nic unable to work properly. Some laptop users with wireless network adapters of the Atheros series may suffer a lot, so let's summarize them here.
NIC: it is detected in Linux as AR242X, which should be a chip. COMPUTER: Thinkpad R61i 7732BGC
Wireless Network Adapter does not work, mainly for three reasons:
1. the driver is not successfully installed.
2. Conflict between drivers (even if there is no conflict, updating one of these may also cause a conflict)
3. Network-manager and wicd problems.

The following is my solution.

Madwifi and Ndiswrapper are the main options for users of the Atheros wireless network card. Madwifi is integrated into Linux-restricted-modules in Ubuntu linux. As an open-source driver, Madwifi is my best choice emotionally, but it has never been tested successfully, the main reason should be that the latest chip and nic model support is not ideal. Of course, selecting the latest source code compilation and installation may solve the problem, however, you must first disable the corresponding modules in linux-restricted-modules for compilation and installation. In order to facilitate management, I finally chose the Ndiswrapper driver to directly use the driver in Windows (I am very sorry ). Although Ndiswrapper may cause crashes and other situations from the Internet information, it is not perfect for me, but it does work.

The installation methods of the two drivers are described on the Internet. Madwifi is installed and enabled by default in Ubuntu. To use Ndiswrapper, you must first disable Madwifi. There are many ways to add the default driver to blacklist as follows:
Echo "blacklist ath_pci" | sudo tee-a/etc/modprobe. d/blacklist

First, choose to install all ndiswrapper search in the new version.

Then, copy the XP driver in your laptop to the directory, for example,/home/panda/setup/XXX/WINXP_2K/NET5211.INF.

Run:
Sudo ndiswrapper-I/home/panda/setup/WLLANATH/WINXP_2K/NET5211.INF

Install the SDK immediately. Do not use a graphical interface, it will crash. Call.

Then, the current driver is displayed.
Ndiswrapper-l

Is there a driver?

Finally, add it to the startup Item.

Sudo modprobe ndiswrapper

Now let's take a look at our wireless network.

Iwconfig wlan0