[2008.8] TangoGPS/gpsd and suspend/resume

[Cédric Berger]

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2008/9/15 Radek Bartoň <blackhex at post.cz>:
> Dne Monday 15 of September 2008 14:03:11 Cédric Berger napsal(a):
>
>> And I guess turning off GPS during suspend will reset GPS state and
>> need another cold restart (since GPS chip has no memory) ? So getting
>> a new fix would be long (at best)...
>> If so, it is indeed a strong argument not to turn off gps.
>
> If is this case valid, is there a possibility to keep GPS chip running while
> CPU will be supended? I need this in case when I'm on a trip recording a
> track and I stop in a pub for a few hours and I want to save some power
> meanwhile.
>
> I made /etc/apm/resume.d/ script which powers up GPS but I can't test it right
> now becase it is too bad wather to get fix here.
>
> BTW: What do you think is the best way to detect that GPS should be powered up
> after resume: seach for tangogps process or save GPS state in suspend.d
> script to some file (i. e. /var/run/gps_state) and enable GPS accordingly?
>
> Thank Mike for exhaustive explanation.
>
> --
> Ing. Radek Bartoň


save on suspend looks better. This is not tangogps specific.
(and if you do not want gps when out of tangogps, then stop it when
exiting tangogps, do not wait for suspend to put it off)