I have a raspberry pi b+ model that simply will not reboot when issuing any of the reboot commands:
sudo reboot, sudo shutdown -r now, etc...those commands seem to shut down the system, never rebooting it. when I say shutdown, all of the lights on the board are off except a red light, which I assume is to signify that the board has power. The only way to get the device to power back up after a "reboot" is to unplug the power cable and plug it back in.
I'm not too sure what's going on here. this pi was recently upgraded from debian 7 to debian 8, but the problem existed on both versions of the OS.
I don't know what information would be useful to provide. I did take a quick video of the pi after issuing the reboot command: https://www.youtube.com/watch?v=ObZ-CcMY3tQ
I don't know that the video will reveal anything useful - it looks ok to me. if there's any commands I should run to provide data, please let me know.
thanks in advance!