Dual screen greyed out in Resolve Studio 17.1.1

Hi, I'm running the above on a Windows 10 desktop with two Dell screens. The dual screen function has worked until recently, but Resolve now defaults on startup to a single screen and doesn't allow me to select dual. Otherwise my dual screen works perfectly, that is on other programs. The display setting is set to extended desktop. Is this a bug in 17.1.1?

Appreciate any assistance as working with a single screen is painful!

Mike

Did you try a GUI reset?

As Uli says, try a GUI reset. If it still doesn't work it's possible a Windows update has changed the monitor settings. No problem here running two screens in 17.1.1.

I am embarrassed to say that it resolved itself, no pun. Quite why I don’t know but thanks for your replies. Mike

I'm brand new to Resolve and I'm having this same problem. Brand new install of Resolve 17.1.1 Build 9 on Windows 10, AMD Ryzen 7-5800, 64GB Ram, Nvidia GTX1070 GPU, Dual Monitors. Workspace->Primary Display shows both monitors, but the Dual Screen option is greyed out. I have tried the Workspace -> Reset UI Layout, but nothing changes. I checked to see if there are any updates from Davinci, but it shows me up to date. Any helpful suggestions?

[Peter Chamberlain]

Are both monitors plugged into the same GPU?