ethernet broken

[NewbuntuUser777]

I'm unable to get ethernet working. It was working, did an install, now it doesn't work.

lspci doesn't show an ethernet controller
ifconfig shows eth0

My laptop is an HP and the ethernet controller is realtek according to the documentation

[karlson]

I'm unable to get ethernet working. It was working, did an install, now it doesn't work.

lspci doesn't show an ethernet controller
ifconfig shows eth0

My laptop is an HP and the ethernet controller is realtek according to the documentation

What does lspci show?
Also can you post output of

ethtool eth0