After upgrading to Big Sur my external 4K Monitor is not working anymore.
I have a DELL U2718Q connected with a Displayport Cable to a Lenovo Thinkpad USB-C Dock (Gen2) and then to my MacBook Pro 13 (2020). Everything was working fine under Catalina and now the screen is recognised within macOS but the screen says no Input on DisplayPort. My other Laptops, which are Thinkpad are working fine.
Does anyone have a similar issue or any idea on how to get this working again?
I have a DELL U2718Q connected with a Displayport Cable to a Lenovo Thinkpad USB-C Dock (Gen2) and then to my MacBook Pro 13 (2020). Everything was working fine under Catalina and now the screen is recognised within macOS but the screen says no Input on DisplayPort. My other Laptops, which are Thinkpad are working fine.
Does anyone have a similar issue or any idea on how to get this working again?