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Asked: 2024-09-26T13:40:57+05:30 In: ,

I am experiencing an issue with my Gigabyte B550 motherboard where the Ethernet LAN connection is not being recognized in Ubuntu. This problem arises despite having a dual-boot setup with Windows. Can anyone provide insights or solutions to resolve this connectivity issue?

I’m having a bit of a frustrating issue with my Gigabyte B550 motherboard, and I’m hoping someone here can help me out. I recently set up a dual-boot system with Windows and Ubuntu on my machine, and while everything runs smoothly on Windows, I’m running into problems with my Ethernet LAN connection on Ubuntu.

Here’s the situation: when I boot into Ubuntu, it seems like the Ethernet connection is just… not recognized at all. I’ve checked the cable and the router, and everything seems fine on the Windows side. The network works perfectly there. I even tried switching cables and ports on the router, but still nothing when I switch back to Ubuntu.

I’ve poked around in the settings, trying to see if I missed something during installation or if there’s a simple toggle I need to flip. I don’t have extensive Linux experience, so maybe I’m just overlooking something obvious. I did run the command `ifconfig`, thinking I might find some clues, but it didn’t show any network interfaces besides the loopback interface. So I’m clearly not getting anywhere fast!

I’ve also checked for updates and even re-installed the latest drivers and firmware for my motherboard. I’ve heard maybe there’s a compatibility issue with the drivers for the Ethernet port on the Gigabyte B550 boards, but I’m not sure where to find relevant drivers or if there’s something I’m missing.

If anyone else has experienced this kind of problem and managed to fix it, I’d love to hear your suggestions or even just your troubleshooting steps. Are there specific commands or logs I should look at in the terminal that could shed some light on what’s going wrong? I’d appreciate any insights you’ve got. I’m really hoping to get the LAN working in Ubuntu so I can fully utilize that side of my dual-boot setup. Thanks in advance!

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    2 Answers

    1. It sounds like you’re dealing with a frustrating network issue on your Ubuntu installation. Since your Ethernet works perfectly in Windows, the problem likely lies within the Linux environment, potentially due to driver support for your Gigabyte B550 motherboard. First, check if the necessary drivers for your Ethernet are loaded by running the command lspci -nnk | grep -A3 Ethernet. This will list your Ethernet controller and the drivers in use. If you don’t see your Ethernet hardware listed, or if no driver is being used, you might need to install a compatible driver. Sometimes, running sudo ubuntu-drivers autoinstall can help resolve issues by installing the required proprietary drivers automatically.

      If your Ethernet controller is recognized but still not working, you can look at the system logs for more clues. Execute dmesg | grep eth to filter messages relevant to Ethernet interfaces for any error messages that might indicate the source of the problem. It’s also a good idea to check the network management service by running sudo service NetworkManager restart to reset the network settings. If all else fails, consider checking the Ubuntu forums or Gigabyte’s website for user-contributed fixes that address compatibility issues with your specific motherboard model. In some instances, disabling and re-enabling the network interface through nmcli or the GUI might help restore connectivity.



    2. Help with Ethernet Issue on Ubuntu

      Sounds like a tough spot you’re in! I totally get how frustrating it can be when everything works on one OS but not the other. Here are a few things you might want to try out:

      • Check Network Settings: Go to “Settings” > “Network” in Ubuntu. Make sure the wired connection is turned on. Sometimes it can be disabled by default.
      • Install Missing Drivers: Even though you mentioned reinstalling drivers, it might help to check if your Ethernet card is recognized at all. Try running this command in the terminal: 
        lspci | grep -i ethernet

        This should list your Ethernet device. If it doesn’t show up, then that’s your issue.

      • Install Additional Drivers: In the same “Software & Updates” settings where you’ll find “Additional Drivers”, check if any proprietary drivers are available for your hardware. Sometimes there are drivers not included by default.
      • Update Your System: Make sure your Ubuntu is fully updated. You can do this by running: 
        sudo apt update && sudo apt upgrade

        It might bring in some fixes or driver updates that could help.

      • Kernel Version: Sometimes the kernel version can make a big difference. You might want to check if you’re using the latest or a different version. Run: 
        uname -r

        and see if there’s a newer kernel available for Ubuntu that could support your hardware better.

      • Look at Logs: Check out the logs for any errors. You can peek at the system logs by running: 
        dmesg | grep -i eth

        This might give you some hints about what’s going wrong with the Ethernet connection.

      • Try a Live USB: If you have another USB stick, you might want to boot into a live Ubuntu session to see if the Ethernet works there. If it does, it suggests an installation issue rather than a hardware issue.

      Hope one of these helps out! Don’t hesitate to reach back if you still hit a wall. Good luck!


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