I experienced several issues with startup for several weeks since the last update. No other changes have taken place in my environment and I have been using this same combination for over a year without issue.
1) LG TV
2) Xbox One with Kinect and External 2TB storage. Direct attached to the TV via HDMI.
3) Harmony 650 Remote (used to power on and switch inputs on the TV)
4) Xbox one in Energy Savings Mode
I have completed the following troubleshooting (factory restore, apply offline update, remove all extra periphs and drive, discharge power, setting TV Mode, power brick directly connected to the wall outlet) with limited success as the issue will return on next power on. However, I finally found the culprit. It appears if I start the Xbox one console with the Harmony 650 (through IR) it will display this extended green screen followed by an endless black screen. Occasionally you can bypass this by power off, discharge power, and restart with the power button. When this issue occurs it will never get to the xbox home screen, nor will remote controllers every completely sync (they will just blink and eventually turn off).
Below are two options I found:
1) Start the Xbox one via the controller, or power button, instead of the Harmony Controller.
2) Or set the console to "Instant On"
So it appears there may be a bug with the recent update when starting the xbox one with a harmony 650 (or assume any IR remote). I have used the xbox one controller for power on for several days and have not seen the issue return, but if I use the Harmony I can reproduce the issue if the system is in the energy savings mode. I also have several xbox ones, and verified this issue on those boxes as well.
Wanted to see if anyone else experienced a similar issue and if so hopefully this can be brought up through the proper channels for possible investigation as it can easily be reproduced with an IR remote and the device in Energy Savings Mode with the last update.