Quote:
Originally Posted by speakingtohe
Yes I am really really sure  I have a 600 that never shut itself off unless you did it manually so it is hard to not hit theI off switch for me. s
Helen |
On both my 650 and T1 I have noticed that when you do either a shutdown, or put them to sleep, there is still system activity (as indicated by the colored LED near the power switch) that goes on for several seconds AFTER you think it has finished based on the screen image.
During this time I suspect that the internal operating system software is dealing with shutting down various services and putting the device to sleep.
So if you shut the device down, but then, within the next few seconds accidentally hit a button, close the cover, or just jam it into your bag, then the software could still try to process that event, while it's in a half-way-between unstable partially shutdown state.
I know that you would think that the programmers would take these kinds of situations into account and protect against this kind of problem, but believe me, after 20 years of testing software professionally, this is EXACTLY the kind of issue that they DON'T bother with (it's all that most idiot programmers can manage these days to keep their damn software from crashing when you do everything right, so forget about asking them to deal with this kind of 'out-of-bounds' special cases).
I posted something about this several months back, after experiencing a couple rapid-battery-discharge episodes on my PRS-650. Since then, I have been careful to make sure that my readers don't see any kind of accidental button presses or screen swipes until they are FULLY finished going to sleep or shutting down (for at least 10 seconds) - and since adopting this approach, I have had ZERO problems with my readers battery running down prematurely.
This seems to work for me, and may not be as out-there as you think, because Sony has already had at least one 'official' bug related to a similar issue where folks were hitting a button or tapping the screen a second time while opening a book (which would lock the reader requiring a reset). If the Reader's internal software couldn't even deal with these kinds of stray inputs while it is fully up and running normally, imagine what could happen if it gets bothered by a stray input at a critical time like when starting up or shutting down.
Bottom line - if you are putting your reader to sleep, you not only have to hit the switch, you have to make sure that the reader is completely finished going to sleep (which takes several seconds AFTER the screen changes) before letting it see any stray inputs. Otherwise, it may be possible that something in the software will fail to fully shut down and drain the battery.
Just a thought . . .