How to fix the issue of CentOS7 not detecting the Wi-Fi card?
If you are unable to detect the wireless network card on CentOS 7, please follow these steps to resolve the issue:
- Check to see if the wireless network card is installed by using the following command to verify if the system has the wireless network card driver installed.
lspci -k | grep -A 3 -i network
If you can’t find any wireless network card, make sure that a wireless network card is installed on your computer.
- Update system: Use the following command to update system packages.
sudo yum update
- Install the appropriate wireless network card drivers: Install the appropriate wireless network card drivers using the following command:
sudo yum install kmod-wl
Next, restart the system.
- Check if the wireless network adapter is enabled: Use the following command to check if the wireless network adapter is enabled:
sudo nmcli radio wifi
If the output result is “disabled”, then use the following command to enable the wireless network card:
sudo nmcli radio wifi on
- Check if the NetworkManager service is running: Use the following command to verify if the NetworkManager service is currently running:
systemctl status NetworkManager
If the service is not running, use the following command to start it:
sudo systemctl start NetworkManager
Make sure it starts automatically when the system boots up.
sudo systemctl enable NetworkManager
I hope the above steps can help you resolve the issue of being unable to detect a wireless network card on CentOS 7. If the problem persists, please consider checking hardware compatibility or contacting your wireless network card supplier for support.
