Struggling to work out what the issue is here - cable, networking card or EE SH router?

RT123 said:
So I plugged in a cheap long cable and that seems fine/better

Hurts to have to be considering replacing the cable (it's expensive for me).

:(
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I would test this longer term, I know it sucks having a cable trailed about the place but if it works then the wall cable is 100% the cause and the sparky who did the job in the first place should be held accountable.
 
Been using my M1 Mac today and that's fine :(

Looks like the company I bought the PC from are going to be terrible in regards to getting the money back (or what I can get back). I can only hope it's not too long.
 
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RT123 said:
Been using my M1 Mac today and that's fine :(

Looks like the company I bought the PC from are going to be terrible in regards to getting the money back (or what I can get back). I can only hope it's not too long.
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Is it under warranty? Presumably it'll be a mobo swap?
 
dlockers said:
Is it under warranty? Presumably it'll be a mobo swap?
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I’m hoping it just needs a different board now (but this one’s already been replaced like for like, so I’m just a bit stumped as to whether that can be the issue still)

Company is also proving very difficult to get to do things.
 
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RT123 said:
I’m hoping it just needs a different board now (but this one’s already been replaced like for like, so I’m just a bit stumped as to whether that can be the issue still)

Company is also proving very difficult to get to do things.
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In all fairness it screams very odd. There is no reason why it shouldn't work
 
Hard to say much more really especially if the same cable run works fine with other devices. With the board being swapped, I seriously wonder if it could be a issue between chipset and ryzen soc as wireshark is detecting the NIC dropping out not cable issue with that error message.
But would expect the system to have more than just Ethernet issues if that was the case so just a theory tbh..
 
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OCZxFTW said:
Hard to say much more really especially if the same cable run works fine with other devices. With the board being swapped, I seriously wonder if it could be a issue between chipset and ryzen soc as wireshark is detecting the NIC dropping out not cable issue with that error message.
But would expect the system to have more than just Ethernet issues if that was the case so just a theory tbh..
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Hmm. It certainly is difficult, although seems logical that it might have something to do with AMD (my old PC had an Intel processor and also worked fine)
 
It's definitely the PC, but company are being completely useless in solving the issue (despite threatening the legal route/rejection of the PC a few times) - then I post a negative review, which gets me one response. Then silence again. This has been ongoing since last Thursday.

It's clearly not a widespread issue with B550 motherboards (otherwise there would be a lot more reports!).

Been using my M1 Mac (don't judge - it's the only alternative device I have!) and no issues for 5 days (but obviously, gaming is difficult).

Therefore I am absolutely stumped - I've tried everything software related and hardware related, short of a full PC replacement (making sure the connection into the house is OK, router to rule out the terrible EE one causing it, alternative Ethernet cable)

A question I had: Previous Intel-based PC (B760 motherboard I believe?) was fine from a networking perspective - should I aim to get a Intel motherboard if I end up getting this one "returned"? Or is it likely that any potential "incompatibility" is not with the AMD B550 Chipset itself?

Also, my understanding of this is limited at best, so may be difficult to explain what I'm asking, but will try my best:

So, built in NIC (cards?) on the mobo and the external NIC's - do they interface in the same way?

I'm just struggling to understand how my old PC (which had an ASUS Prime B760) "just worked" compared to the AMD build with a different chipset really.
 
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It's a long shot but... have you considered the AMD fTPM bug as the cause? It was prevalent on every AMD platform and some chips are more suspectible to it than others. Plus it's Asus so you know they never actually addressed it.

Disable all security settings in the Asus BIOS. Advanced/Security > Trusted Computing > Disable

www.youtube.com

AMD fTPM Random Stuttering Example (Read Description)

Enabling the 'firmware TPM' causes system wide stuttering on a growing number of AMD based PC's, as seen in this video. Personally, I have now had 4 consecut...
www.youtube.com www.youtube.com

Things like this would happen. I can see it under certain circumstances could knock out a network interface which would also explain why the onboard NIC and external NIC show the problem. You should think about running LatencyMon and trying to correlate any interrupts to when the interface goes down. That would give you a good idea if it is the fTPM bug.
 
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GregI said:
It's a long shot but... have you considered the AMD fTPM bug as the cause? It was prevalent on every AMD platform and some chips are more suspectible to it than others. Plus it's Asus so you know they never actually addressed it.

Disable all security settings in the Asus BIOS. Advanced/Security > Trusted Computing > Disable

www.youtube.com

AMD fTPM Random Stuttering Example (Read Description)

Enabling the 'firmware TPM' causes system wide stuttering on a growing number of AMD based PC's, as seen in this video. Personally, I have now had 4 consecut...
www.youtube.com www.youtube.com

Things like this would happen. I can see it under certain circumstances could knock out a network interface which would also explain why the onboard NIC and external NIC show the problem. You should think about running LatencyMon and trying to correlate any interrupts to when the interface goes down. That would give you a good idea if it is the fTPM bug.
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Thank you for the suggestion, I hadn’t thought of this! (Especially since I have seen some things that could be caused by that, eg random stuttering/ ‘microfreezes’ in games)

I will give this a try at some point over the weekend!

When I did manage to speak to someone at the company (seems to honestly get like 1 thing done if I leave a negative review), they wanted to look at it from the perspective that ‘your Realtek NIC is incompatible’, but I don’t think that’s the problem, given different (admittedly external) NICs (which I also tested one of them with a different device and, it was fine) and cables with the malfunctioning PC show the same thing
 
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Do you have a spare Ethernet switch or even can you get hold of a cheap gigabit switch? Might be worth plugging the cable and PC into that and then seeing if your PC maintains a stable connection to the switch.

It’s introducing another device into the equation but it means the physical and logical link is up between PC and switch rather than PC direct to router.
 
I tried with a switch, no improvement.

Editing: I saw the issue happen and LatencyMon reported that the network driver was the slowest response at 1200us

Also said this:

imgur.com

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Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more from users like RachT123.
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