yup = I think you are right - the new graphics card is somehow causing the ethernet device/connection? name to change from enp2s0 to enp4s0 - but that change is not reflected in the netplan file and that was overriding everything.
thank you so much for your help #lifesaver
when it was connected I installed net-tools
and looking around I saw the file /etc/netplan/01-netcfg.yaml referencing enp2s0
rather than enp4s0 - so I changed that..
abigail@Abigails-Desktop:~$ cat /etc/netplan/01-netcfg.yaml
# This file describes...
abigail@Abigails-Desktop:~$ sudo ip a a 192.168.1.222/24 dev enp4s0
abigail@Abigails-Desktop:~$ sudo ip route add default via 192.168.1.254
Error: Nexthop has invalid gateway.
abigail@Abigails-Desktop:~$ sudo nano /etc/resolv.conf
abigail@Abigails-Desktop:~$ cat /etc/resolv.conf
# This file is...
abigail@Abigails-Desktop:~$ ip route
default via 192.168.1.254 dev enp2s0 proto dhcp src 192.168.1.222 metric 100
192.168.1.0/24 dev enp2s0 proto kernel scope link src 192.168.1.222
192.168.1.254 dev enp2s0 proto dhcp scope link src 192.168.1.222 metric 100
abigail@Abigails-Desktop:~$
should I...
abigail@Abigails-Desktop:~$ sudo ip a a 192.168.1.222/24 dev enp4s0
abigail@Abigails-Desktop:~$ sudo ip route add default via 192.168.1.1
Error: Nexthop has invalid gateway.
abigail@Abigails-Desktop:~$ sudo nano /etc/resolv.conf
abigail@Abigails-Desktop:~$ cat /etc/resolv.conf
# This file is...
Connected phone via USB successfully to get this log...
abigail@Abigails-Desktop:~$ ip route
abigail@Abigails-Desktop:~$ sudo nmcli con show
abigail@Abigails-Desktop:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback...
As I said, the water damage happened before christmas and it's been working fine since then with the FirePro V3900 graphics card (the small one) I havent had any other problems at all, its just the new graphics card and internet not happening at the same time. I'm not sure about the...