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Two 4k external monitors through a docking station - Why is this seemingly effortless for Windows but basically impossible for Linux? (feddit.dk)
submitted 5 months ago by SorteKanin@feddit.dk to c/linux@lemmy.world
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I've ran into this situation multiple times at my current and previous jobs. I really want to avoid Windows and use something better, but I can't live without two external monitors.

On Windows, it "just works". I don't have to do anything.

On Linux (I tried Linux Mint today) it doesn't work. First, it only connected one of the monitors, the other one did not register. Then I switched to a different cable from the computer to the docking station and it connected both screens - however, they were locked to 30fps. I could not make them work at 60fps (and this is a major dealbreaker, I cannot live with 30fps).

This isn't really a tech support question, I'm more trying to understand what fundamentally causes this situation. Why is Linux still struggling with pretty basic functionality that Windows does with zero setup? Is it the vendor of the laptop and docking station that aren't properly supporting Linux? Or is it some other problem?

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[-] Nougat@fedia.io 3 points 5 months ago

Oh sure, if you've got something that will pass through the onboard video, you should be good, though you would still be limited to your onboard GPU capability.

I've been real happy with my enclosure and RX580 8GB (it was cheap as a "used, not used" takeoff). Keep in mind that if you decide to go with an external enclosure over USB-C, the GPU you use is going to operate at about 80% of what it would do installed directly in a desktop case. It's still head and shoulders above the onboard performance.

this post was submitted on 04 Jun 2024
65 points (93.3% liked)

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