Link speed doesn't stay at 1gbps

Hello, I'm having a problem with the configuration of the system's link speed. It doesn't stay fixed at 1gbps, it always returns to 100mbps.

About two months ago I tried to solve this and succeeded. What seems to have worked was the ethtool tool:

sudo ethtool -s device speed 1000 duplex full autoneg on

I've already checked the parts and cables in my computer, as well as the Internet access devices, which are connected via fiber optics. They both support this speed. And they're the same too, there's been no change.

The advanced network configuration program has the link speed at 1gbps. But the wired network configuration is at 100mbps.

Captura de tela de 2024-07-05 11-22-00
wired network configuration
Captura de tela de 2024-07-05 09-47-45
Captura de tela de 2024-07-05 11-12-03
advanced network configuration program

I'm wondering if the problem is a software or firmware update or the operating system itself, so I've come to you for help.

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Welcome to the Forum!

When it already worked for You, did You tried it again with that? Maybe there was an Update that affected this and set it back.

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Hi, thanks. sorry for the delay.

I tested this on the same day I published it. And I tested it again today, and it didn't work, unfortunately.

What are the remaining possibilities? Bad cable contact? Or is there something in the software?

I'd like to be able to test via wifi, but I don't have a way to do that.

Maybe it is the Cable. Is it made for Gigabit? Should stand on the Cable. Did You made a Test of Your Internet Connection what Speed it offers? Maybe the 100Mb/s are only false shown.

Does this mean that you don't have Wifi or that Your Wifi doesn't work?

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Hi!

It must be, after all, it has already worked above 100mbps. And I've also checked the order of the lines/colors, and the specification written on them.

Yes, I've done those tests too.

Sorry, I really did misspell that. I meant that I don't have any other way of testing the internet above 100mbps other than with the computer. My smartphone reaches a maximum of 150mbps, and in the tests it scores around 120mbps, I think it's a little too close to a margin of error, but it would indicate that there is no problem with the router/modem. No better options for testing.

It would be nice if that were the case, but it doesn't seem to be. After all, I've been using the internet for a long time now, and almost all day every day.

And they said that You have these 100Mb/s instead of Gigabit?

Hi!

The contracted internet speed here is 500mbps. On my cell phone it doesn't go beyond 125mbps, due to its specifications. And on the computer it doesn't exceed 100mbps.

Hmm ... Does Your System run on Xorg or Wayland?

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Hi
I used the command to check:

echo "$XDG_SESSION_TYPE"

The result was: Wayland.
What's next? This is new for me.

Xorg and Wayland are so-called Window Managers who make that a Window is like it is. That is a very common Explanation. Xorg is an older Standard but reliable. Wayland is newer but can cause Issues - especially when using Nvidia Cards.

To change the Mode, go to the Login Screen. Click on Your Profle so that the Password Field appeares. It has to be appeared! After it is appeared, you should see in the bottom right Corner a Gear Icon. Click on it an You should see 2 Options. Choose the one that is called ''Zorin Desktop on Xorg''. Then log in and try to set up Your Ethernet again and test if it works.

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It worked. But it's very strange. Don't these window managers only deal with appearance and display, but also with content?

I closed the session, switched from wayland to xorg and started the session. I corrected the screen resolution, and when I checked the network settings, it was already at 1000mbps and not 100mbps. I ran the tests and it seems to be solved.

I think I need to restart the pc to be more sure, so I'll get back after that.


It maintained 1000mbps, even after restarting the PC.
So, that's it for today folks.
A big thank you.

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Wayland or X11 are Display Protocols.
A window manager would be a different program, like XFWM4 on XFCE or Mutter on Gnome.

I agree about this one being strange.
Wayland does not directly interact with Network Management. It may be that power management under Wayland is buggy - resulting in that indirectly affecting network.

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Hi... I see, it's just as I was imagining, as a “layman” (I probably only understand superficially), that the two shouldn't interact with each other.

Thanks for your reply.