LaptopSupportAndPowerManagement

[Eric Dunbar]

On Fri, 10 Dec 2004 18:32:48 +1100, Rob Weir <rweir at ertius.org> wrote:
> On Wed, Dec 08, 2004 at 12:15:52PM +0100, Jean Privat said
> > On the wiki
> > http://www.ubuntulinux.org/wiki/LaptopSupportAndPowerManagement I read
> > "Closing the lid should trigger suspend-to-RAM by default".
> > I want to discuss about two points.
> >
> > Why suspend-to-RAM when the laptop is on AC ? There is no power to save
> > and the user or the computer may want to perform various tasks like
> > downloading or computation.
> >
> > With or without suspend-to-RAM, opening the lid may display a locked
> > screen. But in both case, I think nothing must be done immediately
> > because is is annoying to have to wait suspend/resume and to have to
> > enter password only because you close the lid to sit somewhere else.
> >
> > I resume my position with this simple states and events behaviour.
> >
> > AC + lid close event -> nothing(1)
> > AC + lid is closed for 10 seconds -> lock the screen
> 
> Note that some Apple laptops (at least the iBook g4) will hard
> power-down (triggered by hardware, afaik) if the lid is closed for more
> than ~5 minutes and the machine does not go to sleep.

And, some can run perfectly well with the lid closed! I used to run my
PB G3 Pismo with the lib closed all the time in its own little bay
(hooked up to external monitor, kybd, mouse). The PowerBook G4 (first
version at least) can do the same thing.

Eric.