I had a big problem with my Samsung SyncMaster BX2031 and Raspberry Linux. I knew the monitor worked well with Ubuntu (this is my desktop).
So the solution was to reflash with uMate. Everthing worked ‘out-of-the-box’. The Wi-Fi keyboard, and the monitor.
I’m using an HDMI to DVI-D single cable into the Samsung’s DVI-D dual socket (and that’s working good too)
Raspberry Pi 3 Model B
Samsung SyncMaster BX2031
Logitech Wi-Fi Keyboard