On Friday 27 July 2007, Nelson Castillo wrote: > On 7/27/07, Mark Eichin <[EMAIL PROTECTED]> wrote: > > On an 850mAh nokia battery... maybe 3 hours mostly idle (not sure, I > > came back to find it dead.) Haven't timed it with the 1200mAh "real" > > battery, but basically, "power management isn't really there yet." > > Is it hard to do it? Would using NO_HZ in the kernel help?
If you mean a tickless kernel, then probably if it where available. Last I heard it was only available for 32bit x86, not even x86_64 is supported. In any case, I suspect the power saving stuff is more fundamental than that. From reading the Wiki, the Neo 1973 has a low power mode in which it goes to sleep, and turns of the screen, untill it receves and interupt from a device such as the GSM module or the touchscreen. The unfinished power management will be the necessary code to make the phone go to sleep after a minute or so of inactivity. A tickless kernel might save a few more percent on top of that, but it is sleep mode you need to get from 3 hours battery life to 5 days. -- David Pottage _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
