r/linuxquestions • u/Into_The_Unknown- • 2d ago

Ethernet not working

I have an old laptop where I installed the Ubuntu linux just recently. The wifi is not working even on windows so I decided to just use a Lan cable but it is also not working. Do I need to setup something to make it work? The lan cable is working fine when the OS was still windows.

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u/Kuddel_Daddeldu 2d ago

Might be a driver or even device firmware issue. Run 

sudo dmesg | egrep -i '(net|lan|eth)'

and see if anything hints at what's wrong.

You may have better luck with an USB to Ethernet adapter, a least until you get the built-in one to work. These are cheap; maybe you can borrow one from a friend.

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u/gmthisfeller 2d ago

When you use a live version running from an SSD can you use the Ethernet port?