Originally posted by **iamcalegari** May 19, 2023
The external monitor does not work properly when it is connected to the laptop's usb-c thunderbolt port (with displayport).
The screen has a sort of green filter, but the mouse cursor doesn't.
I really want to use Elementary OS as the main system, but I can't...
The fun fact is that in the installation setup everything works great.
https://github.com/elementary/triage/assets/64042095/486d303b-f56a-42a0-925f-bebd4cf6abeb
![IMG-20230519-WA0070](https://github.com/elementary/triage/assets/64042095/0d72fab2-cd59-4c43-ba56-6c1876ad7f7a)
![IMG-20230519-WA0071](https://github.com/elementary/triage/assets/64042095/f6d85a9a-d54e-443a-bbb2-f9520f253c3d)
![IMG-20230519-WA0072](https://github.com/elementary/triage/assets/64042095/490abbdf-fc59-489f-9439-765f537ec60b)
![IMG-20230519-WA0073](https://github.com/elementary/triage/assets/64042095/d44c3314-1588-47dc-a03b-d1743940f946)
Discussed in https://github.com/orgs/elementary/discussions/239