Ubuntu

Netlink Error when attempting to switch ethernet to Full Duplex

Asked by Vincent

I did a fresh install of Ubuntu 22.04 and noticed my wired internet speeds were about in half via speed tests.

My ethernet runs through a Dell 3100 Docking Station via USB with updated DisplayLink drivers.

Details of sudo lshw-c network here:

  *-network
       description: Ethernet interface
       physical id: c
       bus info: usb@2:1.3
       logical name: enx0c37963ab0ab
       serial: 0c:37:96:3a:b0:ab
       size: 1Gbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=cdc_ncm driverversion=5.19.0-35-generic duplex=half firmware=CDC NCM ip=192.168.0.23 link=yes multicast=yes port=twisted pair speed=1Gbit/s

When I look to change the duplex setting to full using: sudo ethtool -s enx0c37963ab0ab duplex full I receive the following error:

netlink error: Operation not supported

I'm not sure what to do next. Any help is greatly appreciated.

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actionparsnip (andrew-woodhead666) said : 		#1

Does the Dock support full duplex? Does the device the cable is connected to support full duplex?

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Vincent (vincent911) said : 		#2

Yes. On my previous install of Ubuntu when I connected the docking station it was already setup to Full Duplex.

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Vincent (vincent911) said : 		#3

The error was with the LoadBalancer. I had full security on the music server including reencrypt of data back to the client. Navidrome didn't know how to process so it sent nothing creating the error. Turning off reencrypt was the solve.