[msh441]

OK. I must have jinxed myself by starting this thread... because last night my phone started doing this NON-STOP! Didn't matter which battery I used, or how snugly it fit in the device. Pulling the stylus, opening the keyboard or any combination of buttons. Whether the screen timed out automaticlly, or I turned it off. I tried resetting a couple dozen times and using the device for a bit and it would function just fine... but as soon as the screen went dark, IT WOULDN'T WAKE AT ALL UNDER ANY CIRCUMSTANCES!!!

So since this was happening EVRY TIME(!?!) I figured I had a good oppertunity to see if anything else would effect it, or if I could find a cause. And, well I think I figured somthing out:

Each time my device had failed to wake, I've been in the dark, or at least in less-than-ideal light (like last night running MemMaid or checking e-mail or whatever before I go to sleep). Ironiclly, I was going to log onto this thread and say my device had't done this all day (serves me right, I guess).

So after resetting and trying different things, here's what I found and would like others to try: Turn off the auto-adjust backlight

To do this, go to the HTC Settings tab and select "All Settings" button. From the next screen, select "System" and goto "Power". In the power settings, select the "Backlight" tab. Uncheck "Auto Adjust Backlight" and pick a brightness setting that works for you. Reset and see how things work for you over the next few days. As soon as I turned it off, my device worked flawlessly under conditions where it was consistantly failing to wake.

So for me it seems whether it's a hardware or software issue, it seems related to the light sensor determining the brightness of the screen.

I'll keep my fingers crossed, try it for a few days (or nights) and report back.