I have been having the same issue. Typing also triggers the detachment. The light turns green and my processes freeze. Also my five and six keys do not work along with my tab key. I have tried everything above. This is the second surface book (I have the OG surface book) and I had to return it. I really don’t want to keep starting over on a whole new hard drive. Also, with no stores I have to mail it in and pray it comes back in a timely manner. I can’t be without my device for long. I run my business from it. Ugh. Best of luck to you all.