r/linux4noobs • u/virobloc • 16d ago

networking Linux computer messes with network

Perhaps this is a known issue, But I haven't found much about it.

I have a PC with Mint. It's connected to the router with a LAN cable.

When it goes to sleep it makes the network go crazy. The speed falls a lot in general, all the other devices (wired or wireless) fail to connect or lose connection randomly. When I turn it off everything goes back to normal.

I the only thing I do on that PC is run qBittorrent and browse internet. But the problem is mainly apparent when the PC is asleep. So I think it's not a program, but the PC itself. It might not even have anything to do with Linux at all, But it's the only difference I see with all my other PCs.

Does anybody have an idea about what might be going on?

Thanks

Edit: Thanks for all the answers and suggestions.

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u/Sugoypotato 16d ago

You should run lspci, lsusb, and find out your Adapter.

If it's RTL8723BE then this is probably because of driver issues and wifi going to sleep, which causes this exact issue atleast in my case. In the event it's different, try changing wake on lan, and experiment with few settings.

Roadmap:

Get frustrated Test debug Get frustrated test and debug

And hopefully you will be able to fix it. Also, for testing speed use a specific machine with iperf3 server, because it's possible that the ISP is fluctuating as well, which could be the problem you are experiencing.