I have a dual booted system and the connection works fine on windows so it's definitely not a problem with the cable or the port. Turning it on gives the "Wired connecting" message for a while before it turns itself off.
The wifi is working fine.
sudo lshw -class network
-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 10
serial: 38:f3:ab:e7:d4:05
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.13.0-30-generic duplex=full firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:39 ioport:3000(size=256) memory:fd604000-fd604fff memory:fd600000-fd603fff
-network
description: Wireless interface
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 00
serial: 74:4c:a1:cf:ef:87
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtw89_pci driverversion=5.13.0-30-generic firmware=N/A ip=10.42.0.206 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:74 ioport:2000(size=256) memory:fd500000-fd5fffff
I used to experience problems with my wifi when I first installed ubuntu on this laptop a few months ago due to my network adapter but this question helped me fix it.
