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I have two ethernet hard wires coming out of the wall in my office, one to the work laptop, the other to this Surly shit talk-dedicated desktop.  Ethernet connection to the laptop works fine.  Unplug that same cord from the laptop and plug in to the desktop and no internet.  The ethernet icon on the homescreen flashes a few time then stops.  Desktop has two ethernet ports, and no joy on either.

But wifi on the desktop works fine.  Maybe a little slow (80 mps each way) but unnoticeable IRL.  So I have wired internet to the desktop, but it won't take it in.  Why?

Posted
16 hours ago, Parliament said:

I have two ethernet hard wires coming out of the wall in my office, one to the work laptop, the other to this Surly shit talk-dedicated desktop.  Ethernet connection to the laptop works fine.  Unplug that same cord from the laptop and plug in to the desktop and no internet.  The ethernet icon on the homescreen flashes a few time then stops.  Desktop has two ethernet ports, and no joy on either.

But wifi on the desktop works fine.  Maybe a little slow (80 mps each way) but unnoticeable IRL.  So I have wired internet to the desktop, but it won't take it in.  Why?

Check that your NICs on the PC are actually enabled in Device Manager and that they are configured for DHCP and don't have preset IP addresses.  Did ethernet on the PC ever work from your office?  The problem could be any number of other things, but this are fairly easy to check.

It is likely that the office ethernet may be configured with DHCP reservations or some other means of restricting device access to the network.  In other words, if it doesn't recognize a device, then it won't give it a valid address.  Offices often do this when they don't wany any schlub off the street connecting a random device to the network that might be infested with cybercooties. 

Just stick with wifi.  For Surly surfing, it should be fine. 

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