suspend and immediate wake-up

Al Johnson openmoko at
Fri Jul 18 14:39:30 CEST 2008

On Friday 18 July 2008, julien cubizolles wrote:
> I' m experiencing some problems with the suspend mode, wich seems maybe
> different from the ones related in the battery-problems thread, so I'm
> starting a new thread.
> Most of the time when I put the Freerunner in suspend mode (apm -s or
> the sleep script from the wiki) it goes completely blank, as expected,
> but wakes up immediately after (I didn't touch it of course). Therefore
> the suspend-mode is useless to save power.
> I checked that this happends only when the GSM antenna is on. I'm
> running the mewster-andy kernel
> (uImage_2008_07_16_gta02_73eeb0333fc771cb696ff9bf17c517c741434b59.bin).

It's getting woken by a message from the GSM. Mine does it on reregistration 
at variable intervals, maybe 3 times an hour. If it happens much more often 
it's worth reporting.

> Also, I'm confused about the so-called power-saving modes from the Power
> Menu : regardless of the choice of dim+lock or dim-only, the Freerunner
> always locks after some time.

I think the on-screen terminology no longer matches the actions - everything 
seems to have moved one step.
No power saving - actually dims but doesn't lock.
Dim only - dims then locks
Dim then lock - dims, then locks, then suspends.

> Finally : is there a way to prevent the screen from locking when in a
> conversation ? It's rather strange to have to unlock the screen to hang
> up.
> Julien.

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