Closed
Bug 803819
Opened 12 years ago
Closed 12 years ago
GPS fix wrongly reported while not really having a fix
Categories
(Firefox OS Graveyard :: General, defect)
Tracking
(Not tracked)
RESOLVED
WORKSFORME
People
(Reporter: gerard-majax, Unassigned)
Details
With current gecko on Nexus S, master at ba2045ecf1577263db447aa522b023a0f614fca8, I'm experiencing total GPS breakage. After enabling debug in dom/system/gonk/GonkGPSGeolocationProvider.cpp to get NMEA tracing, I can see that I never get a GPS fix according to the system: adb logcat -d | egrep -v "RIL|RadioInterfaceLayer" | grep "GGA" I/Gecko ( 339): nmea: $GPGGA,235958.98,,,,,0,00,999.9,,M,,M,,*67 I/Gecko ( 339): nmea: $GPGGA,113525.73,,,,,0,00,300.0,,M,,M,,*60 I/Gecko ( 339): nmea: $GPGGA,113526.73,,,,,0,00,300.0,,M,,M,,*63 I/Gecko ( 339): nmea: $GPGGA,113527.73,,,,,0,00,300.0,,M,,M,,*62 I/Gecko ( 339): nmea: $GPGGA,113528.73,,,,,0,00,300.0,,M,,M,,*6D I/Gecko ( 339): nmea: $GPGGA,113529.73,,,,,0,00,300.0,,M,,M,,*6C I/Gecko ( 339): nmea: $GPGGA,113530.73,,,,,0,00,300.0,,M,,M,,*64 I/Gecko ( 339): nmea: $GPGGA,113531.73,,,,,0,00,300.0,,M,,M,,*65 I/Gecko ( 339): nmea: $GPGGA,113532.73,,,,,0,00,300.0,,M,,M,,*66 I/Gecko ( 339): nmea: $GPGGA,113533.73,,,,,0,00,300.0,,M,,M,,*67 One can check on this reference, http://www.gpsinformation.org/dale/nmea.htm#GGA, GPGGA reports fix status. Quoting: ******************************************************************************************************************** GGA - essential fix data which provide 3D location and accuracy data. $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47 Where: GGA Global Positioning System Fix Data 123519 Fix taken at 12:35:19 UTC 4807.038,N Latitude 48 deg 07.038' N 01131.000,E Longitude 11 deg 31.000' E 1 Fix quality: 0 = invalid 1 = GPS fix (SPS) 2 = DGPS fix 3 = PPS fix 4 = Real Time Kinematic 5 = Float RTK 6 = estimated (dead reckoning) (2.3 feature) 7 = Manual input mode 8 = Simulation mode 08 Number of satellites being tracked 0.9 Horizontal dilution of position 545.4,M Altitude, Meters, above mean sea level 46.9,M Height of geoid (mean sea level) above WGS84 ellipsoid (empty field) time in seconds since last DGPS update (empty field) DGPS station ID number *47 the checksum data, always begins with * ******************************************************************************************************************** So one can deduce that we have no string at all for latitude nor longitude, fix quality is reported as 'invalid', hence no fix, and we have no satellite in view.
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Reporter | |
Comment 1•12 years ago
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Forgot to add that not only we get no fix, but the system somehow reports that we get one located in Lyon, France. Extact location produced is: Latitude: 45.764043 Longitude: 4.835659
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Reporter | |
Comment 2•12 years ago
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Bisecting or even getting back to a gecko commit I know was working does nothing. I have no idea where this comes from.
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Reporter | |
Comment 3•12 years ago
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I'm unsure if it might be linked to A-GPS somehow, but I'm using only WiFi for data connectivity, not 3G network.
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Reporter | |
Comment 4•12 years ago
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I've modified /vendor/etc/gps.xml to enable logging, and looking at the log file produced after a fresh cold start of the phone, I get: $ grep "SetPosition" gl-2012-10-20-230842.txt 23:09:36.679 #057062I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:37.670 #058053I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:38.664 #059047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:39.661 #060044I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:40.678 #061061I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:41.664 #062046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:42.667 #063050I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:43.668 #064051I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:44.670 #065053I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:45.661 #066044I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:46.665 #067048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:47.661 #068044I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:48.674 #069057I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:49.664 #070047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:50.663 #071046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:51.676 #072059I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:52.662 #073045I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:53.666 #074049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:54.675 #075058I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:55.663 #076046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:56.666 #077049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:57.663 #078046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:58.669 #079052I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:09:59.662 #080045I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:00.663 #081046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:01.663 #082046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:02.666 #083049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:03.666 #084049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:04.675 #085058I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:05.663 #086046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:06.668 #087051I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:07.663 #088046I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:08.668 #089051I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:09.710 #090093I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:10.664 #091047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:11.664 #092047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:12.667 #093050I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:13.664 #094047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:14.665 #095048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:15.665 #096048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:16.664 #097047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:17.665 #098048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:18.664 #099047I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:19.665 #100048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:20.668 #101051I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:21.676 #102059I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:22.680 #103063I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:23.676 #104059I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:24.665 #105048I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:25.688 #106071I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:26.666 #107049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:27.666 #108049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:28.668 #109051I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:29.717 #110100I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:30.666 #111049I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:31.679 #112062I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:32.642 #113025I SetPosition: Lat=0.000000 Lon=0.000000 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 1 Invalid 23:10:33.646 #114029I SetPosition: Lat=47.350409 Lon=0.618099 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:34.653 #115036I SetPosition: Lat=47.350409 Lon=0.618099 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:35.643 #116026I SetPosition: Lat=47.350409 Lon=0.618099 Alt=0 EstAcc=3000 HulaPosSrc=0x0000 conf 0 Invalid 23:10:36.647 #117030I SetPosition: Lat=47.350193 Lon=0.617863 Alt=0 EstAcc=200 HulaPosSrc=0x0002 conf 1 Valid 23:10:37.656 #118039I SetPosition: Lat=47.350193 Lon=0.617863 Alt=0 EstAcc=200 HulaPosSrc=0x0000 conf 0 Valid 23:10:38.669 #119052I SetPosition: Lat=47.349628 Lon=0.617210 Alt=134 EstAcc=100 HulaPosSrc=0x0002 conf 1 Valid 23:10:39.684 #120067I SetPosition: Lat=47.349628 Lon=0.617210 Alt=134 EstAcc=200 HulaPosSrc=0x0002 conf 1 Valid 23:10:40.701 #121084I SetPosition: Lat=47.349532 Lon=0.617151 Alt=123 EstAcc=80 HulaPosSrc=0x0002 conf 1 Valid 23:10:41.776 #122159I SetPosition: Lat=47.349422 Lon=0.616966 Alt=132 EstAcc=20 HulaPosSrc=0x0002 conf 2 Valid 23:10:42.809 #123192I SetPosition: Lat=47.349422 Lon=0.616966 Alt=132 EstAcc=20 HulaPosSrc=0x0002 conf 2 Valid 23:10:43.778 #124161I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=15 HulaPosSrc=0x0002 conf 2 Valid 23:10:44.780 #125163I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=15 HulaPosSrc=0x0002 conf 2 Valid 23:10:45.780 #126163I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=15 HulaPosSrc=0x0002 conf 2 Valid 23:10:46.778 #127161I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=15 HulaPosSrc=0x0002 conf 1 Valid 23:10:47.800 #128183I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=10 HulaPosSrc=0x0002 conf 2 Valid 23:10:48.782 #129165I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=15 HulaPosSrc=0x0002 conf 1 Valid 23:10:49.801 #130184I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=10 HulaPosSrc=0x0002 conf 2 Valid 23:10:50.782 #131165I SetPosition: Lat=47.349358 Lon=0.616826 Alt=135 EstAcc=10 HulaPosSrc=0x0002 conf 2 Valid So, GPSD is getting the correct location, but somehow Gecko does get something else!
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Reporter | |
Comment 5•12 years ago
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Okay it seems that the location in Lyon is due to my ISP. Not getting a GPS fix, hence this one gets used when I'm connected to WiFi.
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Reporter | |
Comment 6•12 years ago
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After writing a small Gaia application that probes watchPosition, I have it working properly.
Status: NEW → RESOLVED
Closed: 12 years ago
Resolution: --- → WORKSFORME
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Comment 7•12 years ago
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So in fact maybe the issue is that it does not wait long enough for GPS to get a fix ?
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Reporter | |
Comment 8•12 years ago
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Trivial Gaia application for probing watchPosition: https://github.com/lissyx/gaia-geoloc
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Description
•