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Ubuntu Wi-Fi Connected But No Internet Access (Troubleshooting Guide)

by stacy

Ubuntu is an open-source operating system that’s free to use. It is rapidly becoming a popular choice because of its incredible features. The OS comes with pre-installed applications so you don’t have to purchase them separately.

Ubuntu, however, isn’t perfect. There may be issues with accessing the internet.

This post explains how to troubleshoot and fix “Ubuntu Wi-Fi connected but no internet access” errors. Keep reading for more information.

Restart/Reset Your Wi-Fi Router

Misconfigured Wi-Fi settings can cause you to be unable to access the internet. Restarting the router will help to restore these settings.

All you need is:

  1. Unplug the power cord to turn off your router
  2. Give it 30-60 seconds.
  3. Turn off the power supply
  4. Verify that you have internet access

Some routers come with a tiny reset button. For your router to be reset, hold it down for 5 seconds.

Your Ubuntu computer can also reset Wi-Fi connections. To reset your Wi-Fi connection, use the Network Manager Command Line Interface.

  • sudo service network-manager restart OR
  • sudo systemctl restart NetworkManager

How to Restart the Ubuntu Network-Manager Service

Wireless adapter can be enabled

You might not be able to connect even after you have connected your wireless adapter. If your operating system is unable to detect your wireless device, your Ubuntu Wi-Fi might not work.

Ubuntu may not recognize your Wi Fi adapter as a network gadget. This is a problem that Ubuntu might not recognize as a network device. To access the internet, you will need to enable your wireless card/Wi-Fi dongle in Ubuntu.

You can enable your USB wireless adapter by opening Ubuntu terminal and pressing Ctrl+Alt + T.

sudo lsusb 

The following command will enable an internal wireless adapter:

sudo Ispci

You will see the name of your wireless adapter as well as a list all USB and PCI devices that have been detected by your Ubuntu computer.

Choose the right Wi-Fi connection

You might see multiple Wi-Fi connections if you live in multiplex apartments.

If you choose the wrong Wi-Fi connection, your Ubuntu Wi-Fi may not work. This can be quickly fixed by choosing the right wireless network to get you back online.

Here are the steps for checking available Wi-Fi connections on Ubuntu

  1. Right-click on Network Manager or click on the network icon.
  2. Alternativ, click Network in System Settings.
  3. Select Wireless to see available Wi-Fi networks
  4. Select the right Wi-Fi connection
  5. Close Network Manager
  6. Restart your computer
  7. If this does not solve the problem, you can still access the internet.

Connecting to Wi Fi in Ubuntu

Install network drivers

You may be experiencing errors connecting to Ubuntu Wi-Fi. This could be due to corrupted or out-of-date network drivers.

Your network drivers may be missing if your OS is unable to detect your wireless network. Without these drivers, you cannot access the internet.

Ubuntu ISO images can be used to install network drivers. This is the best thing about this method: You don’t need an internet connection.

These are the steps.

  1. Copy the Ubuntu ISO image to your home directory
  2. Change the name of the file to Ubuntu.iso
  3. To launch Ubuntu, press Alt + Ctrl+ T
  4. Type: sudo mkdir /media/cdrom
  5. cd
  6. Type: sudo mount –o loop Ubuntu.iso /media/cdrom
  7. Launch Software & Updates from the dashboard or applications menu
  8. Click on the Ubuntu Software tab
  9. Check the box with “Installable from CD-Rom/DVD.”
  10. Enter your root password
  11. Click on the tab Additional Drivers
  12. Choose the Wireless Network Adapter
  13. Click on Apply Changes
  14. Reboot your PC
  15. If this solves the problem,

Install missing module drivers

You might have missing module drivers on your computer if you cannot connect to the internet after installing network driver.

Sometimes Ubuntu may recognize your network card, but not know how to use it to enable internet connectivity.

Whatever your situation may be, you will need to install missing module drivers in order to connect to the internet. Here are the steps to follow:

  1. To launch Ubuntu, press Alt + Ctrl+ T
  2. Type: sudo lsmod
  3. Type: modprobe Modulename (where modulename represents the name of your chipset)
  4. To check if the chipset is still missing from your computer, run sudo Ismod once more

Configure DNS Settings

DNS problems are very rare in Ubuntu OS. However, incorrect DNS server settings and a cluttered DNS cache could cause internet connection problems.

The DNS server configuration can quickly restore your Ubuntu Wi Fi connection. Here are the steps:

  1. Press Alt + Ctrl to launch Ubuntu’s terminal
  2. Type: nmcli d
  3. Type: nmcli device show wlan1 | grep IP4.DNS
  4. Ping 8.8.8.8
  5. Right-click Network Manager
  6. Click Edit Connections
  7. Select the Wi Fi connection you are interested in
  8. Select IPv4 Settings
  9. Only Change Method to DHCP Addresses
  10. Add 8.8.8.8.8 and 8.8.4.4
  11. Save and be close
  12. Restart your computer

Install Network Manager

Ubuntu, like Windows Operating Systems has its own network manager. This manages all connections. If your computer does not have a network manager installed, you won’t be able to access the internet.

This utility tool is required to be reinstalled in order to access the internet and manage your wireless connections. To make this work, connect your Ethernet cable to the computer and then run the commands.

These are the steps

  • To open Ubuntu terminal, press Alt + Ctrl+ T
  • Type: sudo apat install network-manager

If none of the above work, you might try editing your configuration file with the following commands.

  • To open Ubuntu terminal, press Alt + Ctrl+ T
  • Type: sudo gedit /etc/network/interfaces

To make the configuration file read as shown below, edit it.

  • auto lo
  • iface lo inet loopback
  • Auto wlan0
  • iface wlan0 inet DHCP
  • wpa -essid mysid
  • wpa – psk mypasscode

The following command will restart the network interface:

  • Sudo ifdown wlan0 && sudo ifup –v wlan0

Turn Wi-Fi Radio On

Sometimes, your Ubuntu wireless connection may stop working due to trivial errors like turning the Wi-Fi radio off.

Wi-Fi transmits data using radio waves. Disable the radio receiver in your Wi-Fi network to disconnect from the internet.

You can restore your network by turning the Wi-Fi radio off from Ubuntu. This will allow you to connect to the internet.

These are the steps

  1. To open Ubuntu terminal, press Alt + Ctrl+ T
  2. Type: nmcli d
  3. Type: nmcli r wifi on
  4. Type: nmcli Wi-Fi list (This command displays a list all available Wi-Fi networks).
  5. Type: nmcli d wifi connect wifi0 password <password> (<password> is your connection password)

Conclusion

It can be difficult to fix Ubuntu Wi-Fi connections problems, especially for a new user.

To troubleshoot most common issues, you will need to have some experience with Ubuntu. Once you are confident with Ubuntu, you can quickly restore your wireless networks using the proven tips below.

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