Have an unused laptop that I want to run Ubuntu on (and leave in a corner to run various scripts). I installed Ubuntu Desktop and a wired connection worked for a while then just stopped working (wifi works). I re-did a fresh install and it works for a while then stops working. There is nothing wrong with the cable or connection; I tried two different ethernet cables on two different laptops as well, there is no issue with the router, cable or internet connectivity.
I have tried everything I have come across on Google and these forums but nothing has worked. It just says "Cable Unplugged". It has on one occasion reconnected but goes away again.
Anyone encountered this before and have a solution? Any help is greatly appreciated.
Here is some output.
sudo lshw -c network
*-network
description: Wireless interface
product: QCA9565 / AR9565 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 01
serial: 40:f0:2f:74:52:ec
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=5.8.0-55-generic firmware=N/A ip=192.168.1.77 latency=0 link=yes multicas
resources: irq:18 memory:f7900000-f797ffff memory:f7980000-f798ffff
*-network
description: Ethernet interface
product: QCA8171 Gigabit Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
logical name: enp4s0
version: 10
serial: 0c:54:a5:1d:f4:6e
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiati
configuration: autonegotiation=on broadcast=yes driver=alx driverversion=5.8.0-55-generic latency=0 link=no multicast=yes port=tw
resources: irq:19 memory:f7800000-f783ffff ioport:d000(size=128)
