We are talking about a situation some years past. I member there were USB docks that if you had them attached to external power and ethernet, but not a laptop, they'd instant-kill the network by sending garbage frames that would cause switches to fault off.
Only around 2024-ish the situation with USB and TB docks seemed to stabilize.
Yes!! The Dell WD19 was notorious for that. My wife’s company used those - we couldn’t leave her WFH dock connected to our home network because of the wild broadcast storms causing our core switch to stop processing frames from her home office desktop switch. My org used HP Dock G5 units which behaved much better (besides the occasional firmware update killing video output until a power cycle, and inconsistent MAC address pass through between hardware revisions).
I had a CalDigit TB dock -- maybe 2021-ish? -- that every time I unplugged my MacBook would take my internet offline. I thought I was insane. How is that even possible? But I finally gave up and returned it.
Thanks for finally answering this mystery for me.
I have a brand new TV where if I plug the HDMI into my M4 MBP, MacOS ceases to have any functioning WiFi capability. Unplug the HDMI and internet returns instantly.
That's probably because your TV has support for Ethernet over HDMI enabled. Run ifconfig to check if there's a new (and, possibly, default-routed) interface when you plug that TV in.
I remember getting my first CalDigit TB dock and being excited - everyone seemed to love them. I expected it to largely Just Work.
That thing Didn't Work more than it Worked, but options were slim. Eventually it fully died about 14 months in. I didn't even bother checking to see what the warranty terms were. TS3 Plus, back in 17 or 18. What a piece of shit.
Sounds like it's a good thing I didn't bother trying again in the early 2020s and only recently bought a new dock.
I have a TS3+ that broke about 18 months in. I talked to support, set up a repair, and before I could send it the dock unbroke and had worked since. Truly mysterious and left me with a sense of unease with that thing given the cost.
Very similar story here. Went through two Caldigit TB hubs most recently a TB4. Soooo many issues. The same Ethernet issue described above, a failure to provide the rated PD power, and the TB linked monitor connection was dodgy af. A very expensive lesson. Add to this the confusing (and deceptive) jumble of TB cable standards. I have so many supposed TB3,4 and 5 rated cables I could probably circle my house. You have to hand Apple one thing and that’s the consistency of their hardware due to tight control of the stack and supply chain. You get far fewer of these sorts of issues.
Ayup, it was a topic on HN at least twice: https://news.ycombinator.com/item?id=31268134 https://news.ycombinator.com/item?id=12339902
Yes, this would have been around 2015. (When I said "Surface Book" I meant the original!)
Docks were bad, bad products in those days. They were no longer the dedicated bulky-but-reliable things of years past, or the modern finally-debugged dongles we've got now.
This was Intel's Alpine Ridge and it was hell. (At least, I think that was the one. Certainly, it was hell!)