[SOLVED] Video "cable error."

[laidlaws]

RUNNING Mageia 9 on a home-built computer connected to the Australian National broadband network via a supplied router/modem which seems O.K The screen is OK with saved content but the router set up screen says that Internet is available but a cable is broken. My wife's HP laptop gives the same message. The only cable that they both use is a 2 metre standard networking cable. Swapping the cable does nothing. There was an "error -32" message but it has gone away.
Reinstalling changes nothing. I can see nothing further in the video chain but I am not a technician. Especially (should be lspci) shows no errors. On another forum dealing with the -32 error message two threads thought that it meant a new HD but nothing in my problem suggests it. My guess is that it was the first thing they thought of.My Android phone works normally.

[sturmvogel]

It is unclear where you see this message or which app produces it. If i read it right, the error message shows up when you enter the settings of your router. You need to check the manual for help…

[laidlaws]

Your reply came in while I was typing. The screen is like that when I log on yes i am able to view the router's start page but i haven't changed any settings. There is no evidence to follow. Bendigo already has a bad reputation for drop-outs. On more than one occasion I have received a carrier but no data. In addition to the Easter break Friday was another public holiday. I will leave it until the beer runs out and everyone goes back to work.

[laidlaws]

But if my phone can receive data the carrier is not empty

[Germ]

Silly question...

Did you reboot the router?

[laidlaws]

Several times. I must have changed a setting somewhere. I have the signal travelling from the router to my study along the power wiring with a good brand of interface at each end. All their LEDS light up when they should. Checking with the laptop on Windows 10 the laptop was right beside the router.