I also noticed this issue. I hold the D-pad direction (usually down as it's easiest) for 2-3 seconds and it wakes up. Now I didn't think of it but I also have a USB hub in place, was a purpose to connect a wireless mouse and testing a thumb drive. But I never removed it. It's still behind the box so didn't use it to extend sight. I'll have to try my down trick without the USB hub.