Wi-Fi on Linux: How to Connect to a Network in 5 Minutes (Even If It's Down)

Connecting to Wi-Fi on Linux often becomes a headache for beginners, especially if the drivers aren't installed out of the box or the network isn't listed. Unlike Windows or macOS, where everything usually works automatically, in Linux you sometimes have to manually configure kernel modules, install proprietary drivers, or edit configuration files. But don't rush to reinstall the system: in 90% of cases, the problem is resolved within 5-10 minutes.

This article will help you understand why Wi-Fi doesn't work on Linux and how to run it—from basic checks to complex cases with missing drivers. We'll cover solutions for popular distributions (Ubuntu, Debian, Arch Linux, Fedora), as well as universal methods that work on any Linux system. If you've never used the terminal before, don't worry: all commands are explained in detail, and there are graphical alternatives for most tasks.

First, check the obvious: is the Wi-Fi adapter physically turned on (some laptops have a hardware switch or a key combination like Fn+F2). If the network indicator isn't lit, the problem may be with the power supply or antenna. Otherwise, follow the instructions below.

1. Checking the status of a Wi-Fi adapter in Linux

Before setting up your network, make sure the system can actually see your Wi-Fi adapter. To do this, run the following command in the terminal:

lspci -knn | grep -iA3 net

In the output, look for lines mentioning Network controller or Wireless. For example:

03:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)
Subsystem: Intel Corporation Wi-Fi 6 AX200NGW [8086:0024]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi

If the answer does not mention a wireless adapter, the problem may be:

• 🔌 Disabled adapter (check BIOS/UEFI or hardware switch).
• 🔧 Missing driver (more on this in the next section).
• 💻 Equipment malfunctions (try booting from LiveUSB of another OS).

If the adapter is displayed, but in the line Kernel driver in use empty - the driver is not loaded. Proceed to the section on installing drivers. If the driver is specified (for example, iwlwifi), but Wi-Fi is not working - check the interface status:

ip a

Look for an interface with a name like wlan0, wlp3s0 or wlo1If it's not there, the adapter is disabled at the kernel level. Try enabling it with the command:

sudo ip link set wlan0 up

⚠️ Attention: On some laptops (especially Lenovo And Dell) The Wi-Fi adapter may be blocked by the function rfkillCheck this with the command rfkill listIf there is a line in the output Soft blocked: yes - unlock the adapter: sudo rfkill unblock wifi.

2. Installing Wi-Fi drivers on Linux

About 30% of Wi-Fi problems on Linux are related to missing or incorrectly working drivers. Most adapters Intel, Atheros And Realtek supported out of the box, but some models (especially new ones) require proprietary drivers or firmware.

First, update the package list and install the default firmware:

sudo apt update && sudo apt install firmware-iwlwifi firmware-realtek firmware-atheros

If your adapter does not work, determine its model using the command lspci -k | grep -A 3 -i network and find the driver in the table below:

For users Arch Linux and derivatives (Manjaro, EndeavourOS) Most drivers are available in AURFor example, for adapters Realtek RTL8852AE:

yay -S rtl8852ae-dkms-git

⚠️ Attention: After installing the driver, reboot the system or manually load the kernel module: sudo modprobe driver_name (For example, sudo modprobe iwlwifiIf Wi-Fi still doesn't work after rebooting, check the kernel logs: dmesg | grep -i firmware.

Make sure the adapter is detected by the `lspci` command|Install firmware for your model (`firmware-iwlwifi`, `firmware-realtek`, etc.)|Check blocking with `rfkill list` and unblock if necessary|Reboot the system after installing the drivers|View the `dmesg | grep -i wifi` logs for diagnostics-->

3. Connecting to Wi-Fi via a graphical user interface (GUI)

If the driver is installed and the adapter is enabled, the easiest way to connect to the network is through standard desktop tools. Most distributions use NetworkManager — a service for network management.

Open the network menu in the upper right corner (📶 or ⚙️ icon) and select the desired network. If the network isn't listed:

1. Make sure the adapter is not disabled (the icon should be active).
2. Check that your router is broadcasting the SSID (sometimes hidden networks are not displayed).
3. Restart NetworkManager:

   sudo systemctl restart NetworkManager

For hidden networks:

1. Click "Connect to a hidden network" (or similar item).
2. Enter SSID (network name), security type (WPA2-PSK etc.) and password.

If there is no graphical interface (for example on a server), use nmtui — NetworkManager text interface:

sudo nmtui

In the menu, select Activate a connection, then find your network and enter the password. This method works even without a graphical shell.

4. Connecting to Wi-Fi via the terminal (wpa_supplicant)

If NetworkManager doesn't work or you prefer manual configuration, use wpa_supplicant — the standard tool for managing Wi-Fi in Linux. This method is universal and works on any distribution.

First, check the name of your wireless interface:

iwconfig

Usually it is wlan0, wlp3s0 or something similar. Next, edit the configuration file. /etc/wpa_supplicant/wpa_supplicant.conf:

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

Add a block with your network settings to it (replace your_ssid And your_password):

network={
ssid="your_ssid"
psk="your_password"
key_mgmt=WPA-PSK
}

Save the file (Ctrl+O, then Ctrl+X) and connect to the network:

sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
sudo dhclient wlan0

The first command starts wpa_supplicant in the background, the second one obtains an IP address via DHCP. If you need to specify a static IP, use:

sudo ip addr add 192.168.1.100/24 dev wlan0
sudo ip route add default via 192.168.1.1

⚠️ Attention: If you still can't access the internet after connecting, check your DNS. Sometimes providers block Google's default DNS (8.8.8.8). Try using Cloudflare: echo "nameserver 1.1.1.1" | sudo tee /etc/resolv.conf.

network={
ssid="free_wifi"
key_mgmt=NONE
}

5. Solving Common Wi-Fi Problems on Linux

Even if the adapter is detected and the driver is installed, common problems may arise. Here are the most common ones and their solutions:

• 🔄 The network keeps disconnecting: Check your power saving settings. Some drivers (for example, iwlwifi) turn off Wi-Fi to save battery. Solution:

  sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

• 🚫 5 GHz networks are not visible: Make sure your adapter supports 5 GHz (check the specifications). If it does, but doesn't detect it, update your driver or kernel.
• 🔒 Authentication error: Incorrect password or encryption type. Please try entering it manually. key_mgmt=WPA-PSK And proto=RSN V wpa_supplicant.conf.
• 📡 Weak signal: Check your antennas (on some laptops, they're not securely connected). You can also increase the transmit power:

  sudo iwconfig wlan0 txpower 20

  (the maximum value depends on the adapter, usually 20–30 dBm).

If the problem persists, check the system logs:

journalctl -u NetworkManager --no-pager -n 50

Or kernel logs:

dmesg | grep -i wifi

Please pay attention to the lines with errors (failed, timeout, firmware). For example, the message firmware: failed to load iwlwifi-cc-a0-77.ucode means that the firmware file is missing. Download it from official repository and place it in /lib/firmware.

6. Setting up Wi-Fi for specific cases

Sometimes non-standard solutions are required - for example, connecting to a corporate network with 802.1X, setting up an access point or working with WPA3Let's consider several scenarios.

Connecting to a network with WPA3

Many new routers support WPA3, but old drivers don't understand it. Update wpa_supplicant up to version 2.9+ and use the configuration:

network={
ssid="your_ssid"
psk="your_password"
key_mgmt=SAE
sae_pwe=2
}

Creating an access point (hotspot)

To share Wi-Fi with Linux, install hostapd And dnsmasq:

sudo apt install hostapd dnsmasq

Edit /etc/hostapd/hostapd.conf:

interface=wlan0
driver=nl80211
ssid=MyHotspot
hw_mode=g
channel=6
wpa=2
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK

Start the access point:

sudo systemctl start hostapd
sudo systemctl start dnsmasq

Connecting to a hidden network

If your router is not broadcasting the SSID, wpa_supplicant.conf add parameter scan_ssid=1:

network={
ssid="hidden_network"
scan_ssid=1
psk="password"
}

⚠️ Attention: Configuration details hostapd And dnsmasq may differ depending on the distribution. For example, in Arch Linux will need to be configured manually systemd-networkd for distributing IP addresses.

7. Updating the kernel to support new adapters

If your Wi-Fi adapter is less than a year old, there's a good chance it's not supported by the current kernel version. For example, chips Intel BE200 or Mediatek Filogic Requires kernel 6.2+. Check your version:

uname -r

If the version is older than 5.15, it is recommended to update. Ubuntu/Debian:

sudo apt install --install-recommends linux-generic-hwe-22.04

On Arch Linux:

sudo pacman -S linux linux-headers

After updating the kernel, reboot the system and check if the adapter is detected. If not, you may need to install additional firmware from the repository. linux-firmware-git (AUR).

Important: Updating the kernel may break proprietary drivers (e.g., NVIDIA). After upgrading, test your graphics card and reinstall the drivers if necessary.

FAQ: Frequently Asked Questions about Wi-Fi on Linux

ip link show wlan0

iwconfig wlan0 | grep Tx-Power

sudo iwconfig wlan0 txpower 20

iwconfig wlan0 txpower 20

update_config=1
ctrl_interface=DIR=/run/wpa_supplicant GROUP=netdev

sudo systemctl enable wpa_supplicant@wlan0