Locus Map - forum

Support => Troubles & Questions => Topic started by: welberger on August 15, 2011, 10:07:27

Title: Locus looses GPS signal when turning off display
Post by: welberger on August 15, 2011, 10:07:27
Hi,

I experienced a strange problem when trying to record a track this weekend. I'm using a LG Optimus Speed smartphone which I updated to CM7. Before when I used Froyo I never had this problem - so I don't know if it's CM7 related or just Locus having trouble working with Gingerbread - and here's the problem:
I start Locus and get a GPS fix in a few seconds time (so no  problem here) then I start recording a track and turn off the screen (I always do this to extend battery runtime). Next time when I turn on the screen again to check on the recording I see that Locus doesn't have any signal anymore - on the GPS screen no satellites are shown but the "GPS on" button is still turned to "on" (in settings the option "Turn off GPS" is turned off!).
When I now deactivate GPS via the button and reactivate it after short while, I will have a GPS fix in a few seconds time. So it can't be for a weak GPS signal that the signal is not detected (btw I made the experience that I get a GPS fix in 8 to 15 sec time even indoors!!). And the sad thing is: I get no recording at all  :cry:
And as I said before: As long as I was using Froyo I didn't have problems with Locus loosing its signal. I always had very acurate recordings.
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on August 16, 2011, 16:03:32
hi, I'm actually on vacation but i'm testing this function and all works fine for me on 2.3.4, so I think it's problem of CM. exist any newer version?

Sent from my GT-I9100 using Tapatalk
Title: Re: Locus looses GPS signal when turning off display
Post by: stebu on August 18, 2011, 00:16:25
I had a slightly different problem today. I was using Locus just for a backup map, with GPS on and screen turned off. Suddenly I became popular and received two phone calls. After both calls the GPS was turned off in Locus!? The system GPS switch was on, but Locus had decided, that GPS should be turned off. I used the setting "Turn off GPS when display is off".
Not a big problem, unless you are recording.
Title: Re: Locus looses GPS signal when turning off display
Post by: DDB on February 28, 2012, 14:29:45
I have the same problem as welberger. Seems it's a problem of Gingebread. If I start to record track everything is fine until I turn off screen. After that if I turn on screen in some minutes, position is at place where I was when the screen was turned off and part of track is missing. In a few seconds GPS receiver finds satellites. So gps reciever loses lock (fix) when screen is off (locked).
I found some ways for solving this problem:
1) Keep screen - program don't allow screen to be turned off
2) Downgrade to Froyo
Are there any other methods for solving this problem (maybe more simple)?
Title: Re: Locus looses GPS signal when turning off display
Post by: DDB on March 01, 2012, 10:17:07
Today I've recorded tracks with Endomondo and Google My Track with turned off screen. Everything was OK. But Locus still periodically loses GPS with turned off screen. When I turn off screen icon of GPS is green (GPS fixed), when I turn on screen icon is orange (GPS lost). Something happens in background - I don't know what. I also decided that this is problem not of the Gingebread but Locus.
I'm on version 2.0.1 Locus Pro. My phone is HTC Desire - Gingebread 2.3.3 Stock. Please help me.
Title: Re: Locus looses GPS signal when turning off display
Post by: tommi on March 01, 2012, 13:16:49
Did you check your GPS settings (Locus->Settings->GPS and location)?
Maybe you have GPS auto-off ticked? In your case I would recommend to remove the tick from this setting.
If this doesn't help you should report the complete settings in the GPS and location menu.
Title: Re: Locus looses GPS signal when turning off display
Post by: DDB on March 01, 2012, 13:43:52
GPS and location settings: enable at start - on, enable notification - on, Disable when hidden - off, gps auto-off - off
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on March 01, 2012, 13:46:19
weird ... may I send you testing version on email together with some instructions?
Title: Re: Locus looses GPS signal when turning off display
Post by: DDB on March 01, 2012, 13:57:15
Of course - please send at vbn@bk.ru
Title: Re: Locus looses GPS signal when turning off display
Post by: AndroidBubi on March 01, 2012, 19:36:20
Samsung Gio Gingerbread 2.3.6. -
Screen turn off/locked -
Locus pro 2.01 has/makes no problem with losing GPS.
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on March 02, 2012, 16:41:24
AndroidBubi - there's so much different phones and everyone react little bit different ... unfortunately

DDB: new mail is heading to you, hope it will works now
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 20, 2012, 21:36:18
I do have a similar problem. I tried to record two tracks. One while running and the other during biking. Both stopped at a certain kind of random point.
While the biking track was recorded I also used the guiding function. This was turned off as well. What's going on here? I am using Locus Pro 2.2.2 on a DesireHD with Android 2.3.5.
I doublechecked the settings and did not find a clue for this behaviour.
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 21, 2012, 17:06:54
Today I tried again to log my way while biking. This time it is really weird as it stopped tracking at several points and started again at other points. So I now have a track with several gaps of up to 1km. Can there be something wrong with the option that stops tracking when I am not moving? I just disabled it and are going to test it on the next ride.
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on April 21, 2012, 17:23:34
aren't you using GPS auto-off feature?

anyway you're not only one with some autopausing unwanted feature. I'm currently releasing new version. There will probably be no change with this problem anyway I'm giving it high priority to next release ...
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 21, 2012, 17:29:23
I tried once the auto-off feature to safe battery, yes. But I was not satisfied with the resulting track, as there were many points way of the actual way. So I now tried again with auto-off off. Thats why all the stuff written in this thread is without the auto-off feature.
When you are going to fix this with one of the next versions: Is there any workaround, as I would like to track meanwhile?
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on April 21, 2012, 17:49:19
ah OK, I just wanted to be sure that you don't use this auto-off feature

and sorry, I don't know any workaround. Mainly because I still don't know why this happen. There should not be any problems with memory, also one buy already recorded for me some logs and nothing. Damn ... anyway as I wrote, next week I'll ask you, or globally here on forum for some tests. This problem have to be solved because seems to be serious and really enyoing
Title: Re: Locus looses GPS signal when turning off display
Post by: tramp20 on April 22, 2012, 08:44:41
Quote from: "menion"aren't you using GPS auto-off feature?

anyway you're not only one with some autopausing unwanted feature.

I had this problem yesterday too the first time: I heard 2-3 times the beep from "get GPS fix successfully ".

GPS auto-off unchecked of course and it was on a track I regularly use.
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 22, 2012, 17:52:02
I did another test today with the option for automatic stopping while not moving set to off. Unfortunately there are 300m of my track missing. But I regonised another weird thing which might be helpful (or not) for bug detection: I started the tracking in Locus and just hit the Power button to turn off the screen without going back to my home screen. When I checked again after several kilometers I was on a homescreen after switching on the phone screen. Changing to Locus it seemed that it was loaded again (the status bar from the beginning appeared). The weird thing though: The track was recorded up to the point where I was standing (with the above mentioned 300m gap several hundred meters before). And the rest of my tour was tracked as it should be.
Another thing I want to add here: Could you add a feature that I can set a track coloring which is applied to a newly saved track? Maybe you could just use the coloring I can choose for the track while it is recorded.
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 28, 2012, 13:17:05
The last two days I kept on testing. Yesterday I tried logging the track with MyTracks through Locus. This was stopped, too. So I played around with the setting during the tour and then found an option that seemed to work. So I went out today and tried again. Guess what: I was able to log my full track without any interruptions.  :) The option causing the problem on my phone is "Enable Periodic updates". I had to switch it off for the logging to work. Unfortunately now I miss the live map feature of the geocache pluging.
Title: Re: Locus looses GPS signal when turning off display
Post by: Menion on April 28, 2012, 13:40:11
hmm interesting. Today will be release of new version. There is probably one main problem in Locus now - discussed here https://getsatisfaction.com/locus/topic ... m_this_map (https://getsatisfaction.com/locus/topics/often_crashes_after_changes_to_german_country_vector_map_instead_of_parts_from_this_map) . It have influence on some unwanted auto-pausing during tracks record and more. So if next version will work correctly, I think it should fix also this issue. If not, I'll for sure look at it
Title: Re: Locus looses GPS signal when turning off display
Post by: Tusor on April 29, 2012, 13:58:37
Hi menion,
thanks for your new update. But I am afraid to tell you, that it does not solve the problem mentioned here. Today I tried to use Locus for navigating me to the start of my hiking tour. Meanwhile I wanted to log the way I was driving with the car. For testing purposes I enabled the option "Enable Periodic Updates". But I forgot to set the phone screen to allways on. So the phone switched the screen of while I was on the motorway. After reactivating it, the phone had stopped logging and tha navigation function of Locus had stopped as well. Not very satisfying.
Finally I reached the start of the hiking tour, switched the option off again and was able to track 3h of hiking without any interruption. So there must be another bug. Shall I transfer this description to getsatisfaction?
Best regards,
Tusor