Ethernet keeps disconnecting/reconnecting

[Astrohunter]

Hi,

Could this be OS related? I start to suspect my M4 Pro Mini developed ETH port fault.
If I use ETH->USB-C then it works fine.

It worked fine for the last few days. 😢

 

[Slartibart]

is anything logged in the console?

 

[Astrohunter]

is anything logged in the console?

I pasted the console log to ChatGPT and GPT said that Mac sees the Ethernet disconnecting.

 

[Slartibart]

the part of the log is probably quite insightful, so if you can’t prompt the LLL/LRMfor further info to drill down on the cause, I suggest to provide that log info to the humans who read here.

You might want anonymise some things in it so.

 

[Astrohunter]

I will wait for Mac Os Taco to become public and then will report to Apple.
I have a feeling that the ETH port is damaged or something.

It worked fine all the time until it didn't, and I didn't change any settings. With other cable got the same issue.

 

[haralds]

Try resetting the network.

 

[Astrohunter]

Try resetting the network.

Downgraded to previous OS and still happens sadly.

 

[haralds]

Check your ethernet cabling.

 

[Astrohunter]

Check your ethernet cabling.

Check how?
Already tried 2 cables.

And it works fine with ETH to USB adapter.

 

[Astrohunter]

So they replaced my logic board and still same issue.

I wonder if it might be my Vodafone router being an issue.

 

[Fishrrman]

Just some thoughts (worth what you paid for them)

New logic board and same problem?
It's probably not the Mini (hardware).

It MIGHT be a software setting.

Is the ethernet/USB adapter working well (again)?

What I'd try:
Connect via the USB/ethernet. We know that works.
Then go into the "Network" settings, pick ethernet and click "details"
Then, I'd start "clicking through" each of the items "on the left", and take a screenshot of each pane of settings.
(I wouldn't be able to remember them all later).

Then...
I'd connect using the Mini's internal ethernet port and REPEAT this process.

Once I had the "two sets of settings", I'd compare them side-by-side.
What's the same, and what's different?
I'd pay most attention to the "hardware" settings.

Again, just some thoughts.
May be of help, or may not.

 

[clingfreeze]

Maybe worth a try. Change Configure to Manually, and the Speed to 1000baseT if you have a 1GBit Ethernet port.

 

[Astrohunter]

So I had my Mac at Apple's contractor twice, even replaced logic board. Ethernet worked fine for them.

I had to change settings to manually and now it works, no idea why I need this with my Vodafone router, and why I don't need to change anything if I use ETH->USB adapter.

 

[haralds]

Apple networking is substandard and slow. macOS network file copy is the worst. Running a Windows guest in a VM on the same hardware runs circles around macOS.
I get faster downloads from the Internet than from another Mac.
I always check the hardware settings on Ethernet. Often, I have to pull and reset the cable of a running Ethernet.

Frustrating.

 

[flowrider]

I run two printers using Ethernet. Never had a problem 👍

Lou

 

[nmt1900]

I remember from some time ago AVB/EAV mode being a problem with some ethernet adapters.
You might try to disable this setting and see if that changes anything.

 

[Astrohunter]

I remember from some time ago AVB/EAV mode being a problem with some ethernet adapters.
You might try to disable this setting and see if that changes anything.

It works with it enabled.