So does the software above work to turn off the screen instead of stand-by? If it does, do we have to disable connected standby?
I don't know, I don't have a Surface Pro 3, or any connected standby mode. No one told me if that feature works on not explicitly.
The way I have implemented the turn off display, is that it does a call to the connected monitors of the system (this included embedded displays) to go in standby.
I have what it seams to be one last bug to fix, I have fix a huge amount, and did some improvements to the software since. Maybe this week-end if all goes well, I'll release it. But I didn't change the code for putting the display to sleep. So if it works, great. If not.. well sorry. I'll look into it, but if I can't find anything, then it could be the way Windows 8 works. Maybe in Windows 9 it will be different.
Currently, based on rumors and speculations, and from blog posts from Microsoft, it looks like the lack of success of Windows 8, is making Microsoft move all its resources to Windows 9. Meaning: No Windows 8.2, and no Windows 8.1 Update 2 (
http://blogs.windows.com/bloggingwi...s-for-windows-8-1-and-windows-server-2012-r2/)