12-12-2020, 10:04 PM
(12-11-2020, 09:19 PM)calinb Wrote: I'm still trying to get a fix from my GPS with Mobian. I've tried everything in this thread, I think, but have yet to to see a single satellite tracked. I referenced the secret decoder ring page on archive.org, because gpsinformation.org is down:
http://web.archive.org/web/2020013103103...e/nmea.htm
The agps scripts appear to be working (thanks alastair-dm) and I get three or four $GPGSV lines ("sentences") but the SNR field is always just a comma for all sats.
As an experiment, I disabled wifi Internet (I have no cellular service here at home) and ran the agps script to delete agps files. Then I rebooted for good measure and used mmcli -m 0 --location-enable-gps-nmea
and repeatedly
mmcli -m 0 --location-get
to monitor the arrival of satellite information. It never comes! The output of --location-get is perpetually devoid of any $GPGSV sentences, no matter how long I wait.
Given that the AGPS-seeded $GPGSV lines display no signal/noise ratio (SNR), could my GPS simply not be receiving satellite signals at all? My 10+ year old pocket Garmin works when booted from cold (after a couple of years of non-use) and my Moto smartphone GPSs work here too.
Does the diagnostic test in the factory Manjaro image contain a functional test for satellite reception? I could download and boot it.
Thanks for any ideas about how to proceed!
I have been struggling with gps satellite acquistion for the past couple of months. I got my first location earlier today. I put my pinephone outside, ssh'd from a laptop, and watched the progress using gpsmon. Took about 30 minutes before it began tracking a satellite. Took 90 minutes to lock 4 satellites and report a location.
