/sys/device/bone_capemgr* doesn't exist on fresh image

Purpose: bone_capemgr* is needed for Device Tree Overlays.

Solution:
Down grade to v3.8.x:

sudo apt-get update
sudo apt-get install linux-image-3.8.13-bone68
sudo reboot 



source: https://groups.google.com/forum/#!topic/beagleboard/IpZuVHS3aEs