Accelerometer question [preliminary report]

Fox Mulder Quakeman1 at
Sun Oct 12 01:17:29 CEST 2008

How can i test if it really goes into suspend or any other suspend-like

After i press the putton zhone says that it goes into suspend and
nothing anymore reacts for input. Only when i press the power button
again it comes back to life after 1-2 seconds.
Is there a way to go into a "deeper" suspend mode and how? :)


Andy Green wrote:
> Fox Mulder wrote:
>> Andy Green wrote:
>>> The issue is "what does idle mean".  Suspend for Freerunner should last
>>> a week.  Sitting there with CPU up even with backlight down is 60-90mA
>>> on battery, suspend is 5 - 10mA and that's why you get battery life
>>> reduced accordingly if you stay out of suspend.  That's a kernelspace
>>> issue on the one hand (suspend is not entirely reliable) but also a
>>> userspace issue (there have been bugs negotiating entry to suspend
>>> instead of sitting there with CPU up at 400MHz and backlight down).
>> Since suspend/resume works again i did a little test how much power my
>> neo uses when in suspend. :)
>> The starting situation was that i used debian with [1] as kernel and had
>> wlan+gsm activated and only zhone and openmoko-panel-plugin running.
>> Than i plug off the power cradle at 100% battery level, suspended my neo
>> and let it sleep for 6 hours. After i woke ip up it only had 24% battery
>> left. This means ~3/4 of the 1200mAh accu drained. 900mAh in 6 hours
>> means that it used 150mA in average all the time while in suspend. This
> Well, it's not "suspended", we have to take care of the nomenclature was
> my point.  Suspended means the CPU is "off".
> I agree that 150mA is no use for "suspend", but I think you find the CPU
> was up during that.
> -Andy

Openmoko community mailing list
community at

More information about the community mailing list