[shr-u] GPS not working

Bill Kenworthy billk at iinet.net.au
Tue Dec 22 04:31:44 CET 2009

On Mon, 2009-12-21 at 21:52 +0100, Michele Brocco wrote:
> On 12/21/09, Michele Brocco <ssj2micvm at gmail.com> wrote:
> > thanks for the info guys. I will install zhone and report whether I
> > can find out something or not. Right now with fso disabled I can get
> > GPS NMEA data out of it. However no fix, position data or something
> > else interesting except sometimes some unreadable Date and Time (ZDA)
> > information which adjusted my time from year 1970 to 1999.
> >
> > On 12/21/09, Daniel Willmann <daniel at totalueberwachung.de> wrote:
> >> Hello,
> >>
> >> On 12/21/2009 02:54 PM, Michele Brocco wrote:
> >>> since i installed the latest SHR-U GPS seem to not work at all. The
> >>> SHR GUI for reading satellites shows no entry at all even after 20
> >>> minutes outside. I think that may be related to the following problem
> >>> with the interface naming extracted from frameworkd.log:
> >> [...]
> >>> 2009.12.21 11:49:13.961 ogpsd                WARNING  (could not write
> >>> to '/sys/bus/platform/devices/neo1973-pm-gps.0/pwron': [Errno 2] No
> >>> such file or directory:
> >>> '/sys/bus/platform/devices/neo1973-pm-gps.0/pwron')
> >>>
> >>> but the file is called power_on here. Am I the only one experiencing
> >>> this (I know somebody having shr-u without that problem)? Is this
> >>> really the reason why I dont get a single entry in the satellite list
> >>> of the shr phoneui?
> >>
> >> This is "normal". Earlier kernel had pwron as node to control power to
> >> GPS and since the change ogpsd just writes to both (and will always
> >> complain about one not being there).
> >> If you install zhone (which should be possible on SHR) you can open the
> >> GPS tab and look at GPS in more detail. The chip will tell you which SVs
> >> it is currently looking for and if it is receiving data or not well
> >> before they appear in the SHR GUI.
> >>
> I the meanwhile I tried with zhone and it seems to search for
> approximately 13 different SVs without results for a loooong while
> (around 20 minutes). Power On seems to work since zhone's GPS icon
> activates after turning gps on through the shr settings gui. Also no
> time sync or any other value is set.

Use settings/position and "remove AGPS data" - I suspect that it
installs with a AGPS data file that by default doesnt suit your location
- I cant get a lock without cleaning it out after install, then its

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