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The wifi stopped working, so I plugged in a ethernet cable, and lshw -C network shows both adapters as unclaimed. I have tried a few things suggestions found google that didn't work, before trying to reinstall Ubuntu 20.04.2.0 LTS.

I'm writing this from the same computer now logged into windows, so there's nothing wrong with the hardware, both wifi and ethernet are shown in windows.

The clean install still did not have any network connection on the first boot (or during install). I'm on the 2nd boot attempt and I now HAVE wifi, but the ethernet is still unclaimed.

I have an Asus TUF 550 motherboard with wifi. It seems a few people have had this issue.

This has happened a few times to me since installing Ubuntu 20.04 on this desktop, but not with my dell inspiron 2016.

sudo lshw -C network
[sudo] password for bryan: 
  *-network                 
       description: Wireless interface
       product: Wi-Fi 6 AX200
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: wlp5s0
       version: 1a
       serial: 14:f6:d8:7f:b8:45
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.8.0-43-generic firmware=55.d9698065.0 cc-a0-55.ucode latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:34 memory:fc600000-fc603fff
  *-network UNCLAIMED
       description: Ethernet controller
       product: RTL8125 2.5GbE Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:06:00.0
       version: 04
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd cap_list
       configuration: latency=0
       resources: ioport:f000(size=256) memory:fc500000-fc50ffff memory:fc510000-fc513fff
user2904033
  • 131

1 Answers1

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Networking should be working during the Live session, did it work? If it worked something happened during the installation process. Try some of the Ubuntu flavors instead of clean Ubuntu. If only WiFi is not working, when you plug the cable and you have internet it might be just missing driver. Look for a proprietary one in your Drivers Manager. One of my laptops works only with a proprietary driver for the Wifi, otherwise it gets limited connection or simply disconnects...

Emil Petrov
  • 41