[shr-u] GPS not working

Michele Brocco ssj2micvm at gmail.com
Mon Dec 21 21:52:34 CET 2009

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.

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