I’m using an academic purpose laptop; Acer, Windows 8.1 64-bit, basic intel CPU.
After a fresh reboot, I open dozens (40+) of PDF and DJVU files which all sit idle in the background (most probably except one which I read at that moment). I check their CPU utilisation from taskman, which shows 0 %, as expectedly, since all the files sit idle (no operations performed on them). Meanwhile I do open and close web browsers and other programs, during which CPU utilization increases and then drops to 0 % or 1 % again as expectedly.
However, after a number of Hybernation cycles, which is the way I close my laptop, suddenly almost all of those files individually start consuming about 1 % CPU time. All of them are still background idle processes, but most of them start consuming ghost CPU cyles? Since their number is 40+, they would en up taking about 15 % to 25 % CPU time while I’m really doing nothing on them (numbers not very accurate due to several known reasons).
Is there any explanation of this weird behaviour, and any suggestions on how to solve / avoid it? (other than closing and reopening the documents?). I’m asking this beacuse this way it drains laptop’s battery much faster than it should with regard to a proper 0% CPU consumption for idle processes of opened documents case.