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    Nexus 5 GPS does not work

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    • D
      danlin last edited by

      Hi,

      I run Ubuntu touch on my Nexus5 for a while already. Great. However, I never got GPS working. I've tried the "wait 5-10 Minutes" method several times - no success. Here is what test_gps results in:

      phablet@ubuntu-phablet:~$ test_gps
      *** setup signal handler
      *** get gps interface
      *** device info
       id = gps
       name = loc_api GPS Module
       author = Qualcomm USA, Inc.
      *** init gps interface
       ** Creating thread: 'Loc_hal_worker' (start=0xb6a617c5, arg=0x16dac88)
       ** After thread_create: 'Loc_hal_worker', error=0 (start=0xb6a617c5, arg=0x16dac88)
       **** Thread wrapper start (start=0xb6a617c5, arg=0x16dac88) ****
      open: Unknown error -1226396600
      open: Unknown error -1226396600
       Diag_LSM_Init: Failed to open handle to diag driver, error = 2*** setting positioning mode
      *** start gps track
      *** gps tracking started
      *** tracking.... 
      *** set capabilities
      capability is 00000007
      *** tracking.... 
      *** tracking.... 
      *** tracking.... 
      

      tracking... repeats then without any other result. "open: Unknown error" looks very suspicious? 😲 ... Note that the error code is different in different runs. Google-ing did not lead to useful insights. Any idea?

      (Note: I already re-flashed radio to several version - no sucess. Latest try: radio-hammerhead-m8974a-2.0.50.2.30.img )

      Thanks! 😉

      AppLee 1 Reply Last reply Reply Quote 0
      • Flohack
        Flohack last edited by

        You need to run test_gps as root...

        1 Reply Last reply Reply Quote 0
        • D
          danlin last edited by

          Thanks for this, I was not aware. However, also running test_gps as root does not lead to success:

          sudo test_gps 
          [sudo] password for phablet: 
          *** setup signal handler
          *** get gps interface
          *** device info
           id = gps
           name = loc_api GPS Module
           author = Qualcomm USA, Inc.
          *** init gps interface
           ** Creating thread: 'Loc_hal_worker' (start=0xb6a707c5, arg=0x18c6c88)
           ** After thread_create: 'Loc_hal_worker', error=0 (start=0xb6a707c5, arg=0x18c6c88)
          *** setting positioning mode
           **** Thread wrapper start (start=0xb6a707c5, arg=0x18c6c88) ****
           Diag_LSM_Init: Failed to open handle to diag driver, error = 2*** start gps track
          *** gps tracking started
          *** tracking.... 
          *** status callback
          *** session begin
          *** set capabilities
          capability is 00000007
          *** status callback
          *** engine on
          *** status callback
          *** session begin
          *** tracking.... 
          *** tracking.... 
          *** tracking.... 
          *** tracking.... 
          *** tracking.... 
          
          

          Still an error, any ideas?

          Flohack 1 Reply Last reply Reply Quote 0
          • AppLee
            AppLee @danlin last edited by

            @danlin said in Nexus 5 GPS does not work:

            I've tried the "wait 5-10 Minutes" method several times

            Were you careful to keep the phone unlocked during this step ?
            If the phone locks itself the GPS is turned off and you'll have to try again.

            1 Reply Last reply Reply Quote 0
            • Flohack
              Flohack @danlin last edited by

              @danlin No it looks different on my device. I can check tomorrow. So its not that in general GPS does not work, it seems only to affect your device.

              D 1 Reply Last reply Reply Quote 0
              • D
                danlin @Flohack last edited by

                Thanks. I made some progress: After waiting a few minutes test_gps did something (and repeatetly does this now without delay):

                phablet@ubuntu-phablet:~$ sudo test_gps 
                [sudo] password for phablet: 
                *** setup signal handler
                *** get gps interface
                *** device info
                 id = gps
                 name = loc_api GPS Module
                 author = Qualcomm USA, Inc.
                *** init gps interface
                 ** Creating thread: 'Loc_hal_worker' (start=0xb6aec7c5, arg=0x55c88)
                 ** After thread_create: 'Loc_hal_worker', error=0 (start=0xb6aec7c5, arg=0x55c88)
                 **** Thread wrapper start (start=0xb6aec7c5, arg=0x55c88) ****
                 Diag_LSM_Init: Failed to open handle to diag driver, error = 2*** setting positioning mode
                *** start gps track
                *** gps tracking started
                *** tracking.... 
                *** status callback
                *** session begin
                *** set capabilities
                capability is 00000007
                *** status callback
                *** engine on
                *** status callback
                *** session begin
                *** sv status
                sv_size:	0
                num_svs:	19
                	 azimuth:	246.000000
                	 elevation:	28.000000
                	 prn:	25
                	 size:	660
                	 snr:	19.100000
                	 azimuth:	0.000000
                	 elevation:	0.000000
                	 prn:	1
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	129.000000
                	 elevation:	1.000000
                	 prn:	2
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	101.000000
                	 elevation:	8.000000
                	 prn:	6
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	274.000000
                	 elevation:	9.000000
                	 prn:	10
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	243.000000
                	 elevation:	60.000000
                	 prn:	12
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	0.000000
                	 elevation:	0.000000
                	 prn:	13
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	324.000000
                	 elevation:	5.000000
                	 prn:	14
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	180.000000
                	 elevation:	15.000000
                	 prn:	15
                	 size:	660
                	 snr:	0.000000
                	 azimuth:	84.000000
                	 elevation:	16.000000
                	 prn:	74
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	277.000000
                	 elevation:	39.000000
                	 prn:	66
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	157.000000
                	 elevation:	4.000000
                	 prn:	86
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	0.000000
                	 elevation:	0.000000
                	 prn:	77
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	291.000000
                	 elevation:	45.000000
                	 prn:	76
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	42.000000
                	 elevation:	68.000000
                	 prn:	75
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	212.000000
                	 elevation:	11.000000
                	 prn:	65
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	39.000000
                	 elevation:	31.000000
                	 prn:	84
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	112.000000
                	 elevation:	37.000000
                	 prn:	85
                	 size:	0
                	 snr:	0.000000
                	 azimuth:	334.000000
                	 elevation:	19.000000
                	 prn:	67
                	 size:	0
                	 snr:	0.000000
                *** nmea info
                timestamp:	312476364
                nmea (63): 	$GPGSV,3,1,09,25,28,246,19,01,00,000,,02,01,129,,06,08,101,*71
                *** nmea info
                timestamp:	312476364
                nmea (61): 	$GPGSV,3,2,09,10,09,274,,12,60,243,,13,00,000,,14,05,324,*7F
                *** nmea info
                timestamp:	312476365
                nmea (28): 	$GPGSV,3,3,09,15,15,180,*49
                *** nmea info
                timestamp:	312476365
                nmea (61): 	$GLGSV,3,1,10,74,16,084,,66,39,277,,86,04,157,,77,00,000,*6F
                *** nmea info
                timestamp:	312476365
                nmea (61): 	$GLGSV,3,2,10,76,45,291,,75,68,042,,65,11,212,,84,31,039,*63
                *** nmea info
                timestamp:	312476366
                nmea (39): 	$GLGSV,3,3,10,85,37,112,,67,19,334,*62
                *** sv status
                sv_size:	0
                num_svs:	21
                
                

                However, Mapping apps (uNav, google maps in morph) do not work. They do not find a position at all. I tried both with 20 minutes waiting time. Nothing happens. Both, uNav and morph, have permission to access gps.

                Any idea?
                Thanks!

                Flohack 1 Reply Last reply Reply Quote 0
                • E
                  Emphrath last edited by

                  If it's like the FP2, a lot of steps have to be carefully followed. Activate localization, cellular and wifi, plug in the charge cable. I use Pure maps, but I guess the same goes for the rest. Then, use UT tweak tool to prevent your navigating app from interrupting. Then make sure your display is set to never lock. Then start the app and launch a navigation query (on pure maps it displays a sort of wheel until it found the place you're looking for) . Put the phone to rest next to a window. Wait and pray the voodoo gods. It should take about half an hour, but it's very variable. Then, as soon as it's found, you're good to go. Never restart your phone, though, oor you have to start it all over again.I'd advise against using flight mode, too.

                  1 Reply Last reply Reply Quote 0
                  • Flohack
                    Flohack @danlin last edited by

                    @danlin If you do not see longitude/latitude values in test_gps then you are not synced. Either bad reception, GPS antenna bad or you are indoor 😉

                    D 1 Reply Last reply Reply Quote 0
                    • Flohack
                      Flohack last edited by

                      This information you are seeing means:

                      num_svs: 21 => 21 satellites were seen so far

                      prn: 75
                      size: 0
                      snr: 0.000000
                      azimuth: 212.000000
                      elevation: 11.000000 => position of the satellite. SNR is 0 means this entry is not valid

                      To me it looks you have a very weak signal. You might never get a lock with this. So for me thats a hardware or location issue. Ubuntu Touch, as I said, is fine, on N5 as well as other devices, so we cannot do much for you 😉 - and it makes no sense to start an app when test_gps is failing...

                      1 Reply Last reply Reply Quote 0
                      • D
                        danlin @Flohack last edited by

                        @Flohack I tested indeed indoors - I'll check if outdoors works better.

                        Keneda Flohack 2 Replies Last reply Reply Quote 0
                        • Keneda
                          Keneda @danlin last edited by Keneda

                          @danlin said in Nexus 5 GPS does not work:

                          I'll check if outdoors works better.

                          Obviously it'll work better outdoor...

                          1 Reply Last reply Reply Quote 0
                          • Flohack
                            Flohack @danlin last edited by

                            @danlin Ok how you would think that GPS works indoors? Just curious...

                            Keneda 1 Reply Last reply Reply Quote 0
                            • Flohack
                              Flohack last edited by

                              GPS satellites transmit low-power radio signals on two carrier frequencies designated as L1 and L2. The L1 carrier is 1575.42 MHz, and the L2 carrier is 1227.60 MHz in the ultrahigh frequency (UHF) band. GPS is a line-of-sight (LOS) system, and thus the signals can penetrate clouds, glass, and plastic but will not go through most solid objects, such as buildings and dense foliage.

                              1 Reply Last reply Reply Quote 0
                              • Keneda
                                Keneda @Flohack last edited by

                                @Flohack said in Nexus 5 GPS does not work:

                                @danlin Ok how you would think that GPS works indoors? Just curious...

                                Most people know very little about technics and sure he though that if mobile data works indoor then GPS would.

                                1 Reply Last reply Reply Quote 0
                                • T
                                  tgv34 last edited by

                                  May be it is only the antenna like explained here:
                                  https://gabgagnon.ca/comment-regler-le-probleme-de-gps-du-nexus-5/

                                  1 Reply Last reply Reply Quote 0
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