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Can not increase resolution on external monitor connected via DP -> TS3 Plus -> TB -> T470s

mm flag

Im not able to increase the resolution on my external monitor, which is connected via displayp ort to a Caldigit TS3 Plus dock. My Lenovo T470s is connected via USB-C to the dock itself.

The max resolution for my 2560x1440 display is currently 1024 x 768. And its flagged as "Unknows Device" in the display device manager under settings.

Sorry Im absolutely a beginner in Linux/Ubuntu.Ubuntu version is 22.10. The internal display of the T470s is perfectly fine recognized, and the resolutions are also available

Thanks a lot

Sadaharu Wakisaka avatar
pl flag
Welcome to AskUbuntu. To eliminate the problem, please see [this](https://www.youtube.com/watch?v=bU6zZqbyz7I) tutorial and the connection is correct. Then open terminal and type `xrandr`, copy and paste the result here.
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