Issues after Updating to Marshmallow I have a 3rd generation Motorola Moto G. I recently updated it to Marshmallow. After doing this, at first I did not encounter any issues but soon afterwards, I started to experience many issues with Android, including:


The pattern lock is absent
I am unable to connect my phone to my computer
The button to factory reset the device is greyed-out
The drop-down notification panel is absent


How can I correct these issues?
I had the same problems. I followed the reset device in Recovery Mode instructions here, and it solved them for me - 

https://support.google.com/nexus/answer/4596836?hl=en