I had a fairly basic noob card out of an RPi 2 kit (canakit). I had done a few trial projects including catching a button press on a jumpered up protoboard using python and nodejs. Things had been working well. I had installed a couple of other libraries related to the gpio for that, but nothing I am aware of that does a configure on the way up. I followed the instructions for installing GrovePi+ (which I think was around the BrickPi, as I recall)… the install seemed to go normally. At then end I think that there was an autoreboot. At that point it failed to boot to “desktop” mode… which had never been a problem before.
I have managed to get into the ssh path and I am able to run some of my existing code, etc. I ran raspi-config and managed to change to boot to a prompt and that seems to work fine. The problem seems to occur when booting to startx. I suppose something got setup in the init for startx prior to the reboot that just presented upon the reboot, but I can’t think what that would be. It does not seem like the GrovePi software would need to make changes to the windows interface, but I really am not familiar.
Any suggestions as to where to look would be appreciated. Fortunately this is all experimentation at this point. I have built up a secondary flash to make progress and now have a second RPi2 for experimentation. I will try to reinstall in the next couple of days on that and see if the results are different.