I installed Ubuntu 20.04 on a brand new Dell Latitude 5500 about 10 days ago. My ethernet conection has been working fine for one week but then it has not been working at all for the last 3 days. Network settings just say “Cable unplugged”.
ifconfig command shows this: https://paste.ubuntu.com/p/STB2GZS8Vm/
eno2: flags=4099 mtu 1500 ether c0:3e:ba:47:32:4a txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0x91300000-91320000
sudo lshw -C network command shows this: https://paste.ubuntu.com/p/fXmW2VcKMF/
*-network:1
description: Ethernet interface
product: Ethernet Connection (6) I219-V
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: eno2
version: 30
serial: c0:3e:ba:47:32:4a
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.5-4 latency=0 link=no multicast=yes port=twisted pair
resources: irq:127 memory:91300000-9131ffff
Is anything wrong in these outputs ? My understanding of these is limited so any help would be appreciated.
When I start Ubuntu live from a USB stick, same I cannot connect via the ethernet cable, although it worked fine when I installed Ubuntu on the machine.
Nothing wrong with the cable as it works on another laptop running with Windows.
Could it be a hardware problem ? A driver issue ? Network manager ??
Thanks a lot for your help, this is frustrating…
Hi, I have the same problem, in ubuntu 19.1 Ethernet was good, but when I update it to 20.04 I have a cable unplugged.
I proved two options then I restarted my PC, maybe it works for you:
1st: Update Ub and install net-tools
sudo apt-get update -y
sudo apt-get install -y net-tools
2nd: Installing udav.
sudo apt-get install udav
3rd: Rebooting your PC