why can’t Linux find the wireless adapter?

Linux can’t find the wireless card, why can’t Linux find the wireless adapter? Some customers say that Linux cannot find the WiFi adapter.

If Linux does not find the wireless network card, perform the following steps to troubleshoot the problem:

1. If it is an automatically installed driver, you can manually install the network card driver again, open the “computer” of the computer desktop, find the “CD drive”, right-click the stand-alone machine and select “Open”, in the list, double-click the “Setup” application, start installing the driver, wait for the progress bar to 100% disappear, the bottom right of the computer pops up a dialog box prompts that the driver installation is complete, you need to restart the computer, and then connect the signal to the Internet;

2. If the wireless network card is not inserted after manually installing the driver, you can check whether there is a problem with the USB interface of the computer, and the interface can be changed;

3. Check whether it is caused by computer hardware problems, if not, it may be a problem with the wireless network card itself, you can contact after-sales to check.

Linux could not find the wireless card device

What should I do if I plug in the wireless network card after entering Linux?

The solution is as follows:
Use iwconfig to power on the wireless card and find the wireless network in the area
Connect to the appropriate wireless network

why can’t Linux find the wireless adapter?

Enable the wireless card via ifconfig and get the IP if using DHCP
Note:
Assuming that the wireless is recognized as wlan0, if the network card is not recognized as wlan0, you can modify it accordingly.

　Specific process

1. Turn on the power of the wireless network card

iwconfig wlan0 txpower on

The signal light for the wireless network should be on.

2. List the wireless networks in the area

iwlist wlan0 scan

3. Suppose you want to connect to the network MyHome (that is, the network where essid is MyHome), then enter the command
iwconfig wlan0 essid “MyHome”