Computer displays

[ppppenguin]

Tried Displayport daisychain and it didn't work. Switched on DP1.2 on the first monitor, hooked up the cables. DIsplay 1 was just background colour, display 2 said it had no signal. Perhaps I should have rebooted the PC but couldn't be bothered. Works fine with one on Displayport, the other on HDMI so I'll leave well alone.

Graphics card is a Radeon R7 360 series which definitely supports Displayport 1.2 MST.