[rjzzleep]

I wouldn't be surprised if it was a thunderbolt linux issue. The dell "docking station" usb-c hubs don't really work well with anything else than dell windows machines. Same with some lenovo bluetooth mice.

I do remember however that contrary to macos my 2012 macbook air could drive higher resolution external monitors when running linux. So I'd put this into the Thunderbolt is a hackjob on linux box.

[krzyk]

I think this might be issue with given laptop.

Some non-apple laptops sometimes reduce badwidth of thunderbold 3 (e.g. in mine t490s the bandwidth is halved, just because - this is hardware, not linux).