Category: WiFi & Networking

No internet on Linux – step-by-step network debugging

No internet on Linux is frustrating, but it’s almost always fixable in a few minutes once you know where to look. This guide works through the problem in order — from “is it just this website?” down to the network card itself — so you can find the cause without guessing. It applies to Ubuntu, Mint, Debian and most other distros.

Step 1 – Find out how far the connection gets

Open a terminal and test three things in turn:

ping -c3 192.168.1.1
ping -c3 1.1.1.1
ping -c3 google.com

If the first (your router) fails, the problem is local — cable, WiFi or adapter. If the router replies but the second (a public IP) fails, the issue is between you and your provider. If only the third (a name) fails, your connection works and the problem is DNS — jump to Step 4.

Step 2 – Check NetworkManager sees your connection

nmcli device status

Your adapter should read connected. If it says unavailable or disconnected, the network service may have stalled. Restart it with:

sudo systemctl restart NetworkManager

Wait ten seconds and check again — this alone clears a surprising number of “no internet on Linux” cases.

Step 3 – Wired vs wireless

If WiFi is the problem, plug in an Ethernet cable to confirm the rest of the system is fine. A working wired connection but dead WiFi points to a wireless driver issue — our separate WiFi troubleshooting guide covers that in detail. No wired option? Tethering a phone over USB is a quick way to get online temporarily so you can install any fix you need.

Step 4 – Fixing DNS

If you can reach IP addresses but not website names, DNS is failing. Test with a public resolver:

ping -c3 1.1.1.1
nslookup google.com 1.1.1.1

If that works, set your connection to use a reliable public DNS server in Settings → Network → your connection → IPv4, then turn off automatic DNS and enter the server manually. Reconnect and names should resolve again.

Step 5 – Rule out the router

Before assuming it’s the computer, check whether other devices are online. If nothing in the house has internet, restart the router and contact your provider. If only the Linux machine is affected, the cause is local — and the steps above will have narrowed it down.

Hardware that connects out of the box

Network adapters with poor Linux support are a common root cause of these headaches. Every ArkPC Linux laptop and desktop is tested with wired and wireless networking working on your chosen distro before it ships anywhere in Australia. If your current machine keeps dropping offline, talk to our support team — we’ll tell you honestly whether it’s a setting, a driver, or hardware worth replacing.

Linux WiFi not working – how to diagnose and fix it

Linux WiFi not working is the single most common issue people hit after installing Linux on a laptop, and in most cases it comes down to one thing: the wireless chip needs a driver (firmware) that didn’t load out of the box. This guide takes you from diagnosis to fix, step by step, on Ubuntu, Mint, Debian and most other distros.

Step 1 – Confirm the hardware is detected

Open a terminal and run:

lspci | grep -i network
lsusb | grep -i wireless

If a wireless adapter is listed, the hardware is visible and the problem is software. If nothing appears at all, check that WiFi isn’t disabled by a hardware switch or function key (often Fn+F2 or similar on laptops).

Step 2 – Check whether a driver is loaded

nmcli device
sudo lshw -C network

A device shown as unavailable or a line reading network UNCLAIMED means no driver is attached — the classic cause of Linux WiFi not working.

Step 3 – Install the missing driver

On Ubuntu and Mint, open Software & Updates → Additional Drivers; proprietary wireless drivers (Broadcom is the usual suspect) are offered there with one click. Plug in Ethernet or tether your phone over USB first, since downloading the driver needs a temporary connection. On Debian, enable the non-free-firmware repository and install the package for your chip.

Step 4 – When WiFi connects but keeps dropping

Intermittent drops are usually power management being too aggressive. Test with:

sudo iwconfig wlan0 power off

If the connection becomes stable, make the change permanent in a NetworkManager configuration file — or ask us and we’ll walk you through it.

Step 5 – Check rfkill and airplane mode

Linux keeps a software kill-switch for radios. Run:

rfkill list

If your wireless adapter shows Soft blocked: yes, run rfkill unblock wifi and reconnect. Hard blocked means a physical switch or BIOS setting is turning the radio off – check both. Airplane mode toggled by a stray function key press is a surprisingly common cause of WiFi vanishing overnight.

The honest fix: hardware that’s known to work

Some wireless chips simply have poor Linux support, and no amount of configuration makes them reliable. Every ArkPC Linux laptop is tested in Australia with WiFi working out of the box on your chosen distro, and our desktops offer a tested WiFi card option at checkout. If your current machine’s WiFi is beyond saving, talk to our support team — sometimes a $20 USB adapter with a well-supported chip is all you need, and we’ll tell you honestly which one.