There’s this standard, Thunderbolt, an Intel thing, that promises to standardise the communication between your Thunderbolt laptop and your peripherals. Your dock will connect to a 4k monitor, a keyboard, a Blu-ray burner, and whatnot, through a single cable, and you’ll be able to work, with your system scaling your desktop to whatever resolution your connected monitor had, plus the peripherals. A single cable was all it would take.
I bought into this almost a decade ago. A Dell Thunderbolt dock I bought was supposed to deliver all of this when connected to my Dell XPS 15. A keyboard, a mouse, a network, plus any number of peripherals. And I’d be able to connect to the setup with other computers, immediately accessing the hardware connected to the dock. All they needed was Thunderbolt.
Right.
It never worked properly, not even with my XPS. More often than not, I’d have no monitor or simply no workable connection. Other laptops would have similar issues. The dock never delivered.
That TB dock is a paperweight today. It never did what it was supposed to.
In 2021, I bought a ThinkPad X1 Carbon, generation 9, and a Lenovo Thunderbolt 3 dock with it. I started with a Dell 27″ 4k monitor that I eventually replaced with a Lenovo 40″ 5k monitor, a wired keyboard, a remote mouse, and a Blu-ray burner. No problem whatsoever. The dock was TB3, the laptop was TB4, and everything just worked. I would regularly connect a customer’s Dell TB laptop and it would work perfectly, except for the dock’s power button that was Lenovo-specific. But everything else really just worked.
Fast-forward to 2026. I knew I needed Io replace the X1 Carbon, and I fell in love with a P1 gen 8, a ridiculously powerful 16″ workstation laptop, mostly because I wanted a 4k screen the current X1 Carbon generation didn’t offer. I did not actually need the Nvidia card, even though I had to have 64 GB RAM because of the multiple VMs I had to run.
So P1 gen 8 it was. I ordered one, and I ordered a Thunderbolt 5 dock to go with it.
Big mistake.
My P1 laptop, running Kubuntu Linux, couldn’t charge if connected to the laptop once the laptop was asleep. It would also actively drain its battery while at asleep. Even worse, if you shut down the laptop while connected, it would seemingly be off but in reality continue to drain its battery.
I complained to Lenovo, so they replaced the dock. That didn’t help enough. The new dock would still stop charging a connected laptop currently asleep, so now my P1 is in Ireland being repaired.
But here I am, the P1 “in repair” and me connecting to the TB5 dock using my X1 Carbon. Guess what? If the laptop goes to sleep, it’s well nigh impossible to wake it up again.
