Today 12/15/2015, I used both online and phone tech support to complain that my Surface Pro 4 i5/120GB will not wake up from sleep mode on occasion. They had no fix but say an update is coming sometime today. They could not tell me this update will fix my issue. I have had my Surface Pro 4 since Oct 26th and have had this issue occur about 6-8 times since getting it. I maybe returning it because of this issue. I do not use Edge so I have not the issues others are reporting. For the high cost of this table I do not feel confident with the tablet because of this issue. Have others experienced this issue? I know it is display driver related. Please Microsoft fix my tablet.