How to force extended mode?

To force extended mode you can do the following.
Please note that you should return to direct mode for performance VR experience, extended mode is officially not suggested. 

1. Stop Fove Runtime.
2. Right click on the Fove VR.
3. Configuration -> Edit Config File
   

In there insert the following:

COMPOSITOR_DISPLAY_MODE=1

After running the compositor, if the FOVE 0 screen shows up rotated in windows, please change the screen orientation. On Windows 10 this can be done as follows:

1. Right-click the desktop.
2. From the pop-up menu select 'Display settings'.
3. Select the FOVE display.
4. Set the orientation to 'Landscape (flipped), and 'Apply' changes.

Reference

• Force extended mode?
• I am unable to see anything in HMD