Linked by Thom Holwerda on Tue 7th Jun 2011 15:37 UTC
QNX RIM has pushed the second update of the QNX-based operating system running on the PlayBook. One of the new features listed? "The BlackBerry PlayBook tablet can now be charged even when fully powered down." Oh my.
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RE[5]: Comment by Lazarus
by vivainio on Thu 9th Jun 2011 06:59 UTC in reply to "RE[4]: Comment by Lazarus"
vivainio
Member since:
2008-12-26


Well, at least the state is cleaned up. But I'd have thought that only the clock would remain powered on. Especially considering how much time most devices take between the moment where they are plugged in and the moment where they display some "charging..." indication.


It takes time to bring up the graphics stack that displays the charging indicator.

Reply Parent Score: 2

RE[6]: Comment by Lazarus
by Neolander on Thu 9th Jun 2011 07:46 in reply to "RE[5]: Comment by Lazarus"
Neolander Member since:
2010-03-08

It takes time to bring up the graphics stack that displays the charging indicator.

But what exactly is brought up when the device is in deep sleep then ? Is it only about keeping the minimal amount of electronic components on so that interrupts work, and wiring some interrupt handlers to the "load the rest of the OS" actions ?

Edited 2011-06-09 07:46 UTC

Reply Parent Score: 1

RE[7]: Comment by Lazarus
by vivainio on Thu 9th Jun 2011 10:03 in reply to "RE[6]: Comment by Lazarus"
vivainio Member since:
2008-12-26

But what exactly is brought up when the device is in deep sleep then ? Is it only about keeping the minimal amount of electronic components on so that interrupts work, and wiring some interrupt handlers to the "load the rest of the OS" actions ?


The "whole operating system" (i.e. kernel) is up when the device is sleeping. It just doesn't do anything (i.e. no wifi, graphics, apps), so it won't consume much power either.

Reply Parent Score: 2