If you just installed Linux and cannot connect to Wi-Fi, you can follow the following steps to solve it: 1. Check whether the wireless is disabled, use the rfkill command to view and unblock; 2. Confirm whether the network card driver is installed, check the device through lspci or ip link and install the corresponding driver; 3. Check whether the NetworkManager is running normally, restart the service or use command line tools to connect if necessary; 4. Troubleshoot BIOS settings, hardware switches or dual-system conflicts, turn off Windows Quick Start or adjust BIOS settings. Most of the problems are caused by the driver not being installed or the wireless is disabled, so you can solve it by checking it in order.

I just installed Linux and found that I couldn't connect to Wi-Fi, which is actually quite common. Especially if you are using Windows before, you may encounter problems such as the driver is not installed properly, hardware incompatible, or configuration incorrectly. Don’t worry, the following common reasons and solutions can basically help you solve most of the situations.

1. Check if wireless is disabled

Sometimes it's not a network problem, but your wireless function is disabled by the system. You can try this command first:

 rfkill list

See if there are any entries like "Wireless LAN" displayed and if the status is "blocked". If it is blocked, you can use the following command to unblock:

 rfkill unblock all

If this step solves the problem, then congratulations, don't read it down. If there is no effect, continue to troubleshoot.

2. Confirm whether the network card driver is installed

Linux has already supported many hardware well, but some brands of wireless network cards (such as Broadcom and Realtek) may require additional driver installation.

You can use this command to check whether the system has recognized the wireless network card:

 lspci | grep -i wireless

or:

 ip link

If you see wlan0 or a similar name, it means that the driver is basically loaded; if you only see lo and eth0 (or similar wired network ports), it may be that the driver is not installed.

Common solutions:

• Plug the network cable and use a wired network to update the system, and then install the corresponding driver.
• Use the "Add Drivers" tab in the "Software and Update" tool that comes with distributions such as Ubuntu to see if there are any recommended drivers.
• Manually download drivers, such as wl drivers for Broadcom:

 sudo apt install bcmwl-kernel-source

Different models may require different packages, so it is recommended to search based on the specific network card model.

3. Check the desktop environment's network manager

If you are using desktop environments such as GNOME and KDE, you usually have NetworkManager. Sometimes it does not start, or has configuration problems, which can also lead to the inability to connect to Wi-Fi.

You can try restarting the NetworkManager service:

 sudo systemctl restart NetworkManager

Or check its status:

 systemctl status NetworkManager

If you are using a system without a graphical interface, you may need to use the nmcli command to manually connect to Wi-Fi, or use wpa_supplicant dhclient combination operation.

4. BIOS settings or hardware switch issues

Some laptops have physical wireless switches or have wireless modules disabled in the BIOS. If you are sure that there is no problem before, you might as well go to the BIOS to confirm whether the wireless is on, or check the wireless shortcut keys on the keyboard (usually Fn F keys).

In addition, some dual-system users quickly shut down from Windows to Linux, which will lead to device resource conflicts. You can turn off the "Quick Boot" function in Windows to try it.

Basically these common situations. Most of the time, the driver is not installed or the wireless is disabled. Follow the above steps to troubleshoot step by step. If it is not convenient to search for information online, you can also use your mobile phone hotspot to connect the computer to the Internet, and then install the driver, it will be much easier.

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