RE: Bad experience with N900 onboard GPS.
I don't know for sure, but my guess is that it is based on what you have selected in Settings... Location... If you enable GPS and Network Positioning, I would guess you get Assisted Global Navigation Satellite System (AGNSS) If you enable GPS and don't enable Network Positioning, I would guess you get Global Navigation Satellite System (GNSS) If disable GPS and enable Network Positioning, I would guess you get Assisted Complementary Wireless Positioning (ACWP) and if you diable both, I would guess you get Complementary Wireless Positioning (CWP) Aldon - Original message - > Based on the documentation of the GPS software, the GPS can run in four > different modes, Interesting, do you know if the gps runs through these 4 modes when starting up ovi maps? Or if you can say what order it goes through? Thanks. Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > Based on the documentation of the GPS software, the GPS can run in four > different modes, Interesting, do you know if the gps runs through these 4 modes when starting up ovi maps? Or if you can say what order it goes through? Thanks. Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > On 14 February 2010 09:12, Bernard Tyers wrote: > > > No, I don't have a connection to the Internet when using Ovi Maps-thats the > > exact reason why I use Ovi Maps. > > > > You shouldn't be expected to use a network connection with an onboard GPS. > > > > True, but afaik N900 has A-GPS onboard, which is assisted by supplementary > GPS data downloaded via internet. Without that connection it probably sucks > badly, as you could experience. I am no expert on GPS, but that's how I > understand A-GPS chipsets are working. Using a-gps when roaming is not a good idea, as it costs data roaming charges. Leaving aside the fact it is not proper location positioning.. Causing users more data costs than necessary is a lazy way of providing a feature-the issue here with Ovi Maps and GPS has been identified as a bug. So I am happy. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: Bad experience with N900 onboard GPS.
Based on the documentation of the GPS software, the GPS can run in four different modes, Complementary Wireless Positioning (CWP) - This is based on the location of the country and/or the GSM base station location. It does not use the onboard GPS at all, but depends on the SIM card. Assisted Complementary Wireless Positioning (ACWP) - This is similar to CWP but requires a network connection to get better information about the GSM base station location Global Navigation Satellite System (GNSS) - This uses the GPS receiver. It does not require a network connection or a SIM card. Assisted Global Navigation Satellite System (AGNSS) - This uses the GPS receiver, but gets additional information from a SIM card or Network connection. It works basically the same as GNSS, but since it starts with a good guess at the location is often faster on startup than GNSS. I had a little fun writing some software for the N900 to track a drive I took a while ago. All of the data was extracted using AGNSS and saved to a file which I loaded into Google Maps. You can see the map of my trip, as well as read about the programming I did at #N900 - My New Gps http://www.orient-lodge.com/node/3884 (The link to liblocation in the blog post is where you can also read more information about the various GPS modes) Aldon -Original Message- From: maemo-users-boun...@maemo.org [mailto:maemo-users-boun...@maemo.org]on Behalf Of Dawid Lorenz Sent: Sunday, February 14, 2010 7:43 AM To: Bernard Tyers Cc: maemo-users@maemo.org Subject: Re: Bad experience with N900 onboard GPS. On 14 February 2010 09:12, Bernard Tyers wrote: No, I don't have a connection to the Internet when using Ovi Maps-thats the exact reason why I use Ovi Maps. You shouldn't be expected to use a network connection with an onboard GPS. True, but afaik N900 has A-GPS onboard, which is assisted by supplementary GPS data downloaded via internet. Without that connection it probably sucks badly, as you could experience. I am no expert on GPS, but that's how I understand A-GPS chipsets are working. -- Dawid 'evad' Lorenz * http://adl.pl null://I would love to change the world, but they won't give me the source code ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
On 14 February 2010 09:12, Bernard Tyers wrote: > No, I don't have a connection to the Internet when using Ovi Maps-thats the > exact reason why I use Ovi Maps. > > You shouldn't be expected to use a network connection with an onboard GPS. > True, but afaik N900 has A-GPS onboard, which is assisted by supplementary GPS data downloaded via internet. Without that connection it probably sucks badly, as you could experience. I am no expert on GPS, but that's how I understand A-GPS chipsets are working. -- Dawid 'evad' Lorenz * http://adl.pl null://I would love to change the world, but they won't give me the source code ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > On 12 February 2010 20:17, Bernard Tyers wrote: > > > Is anything written to the OS when the GPS is running? Can we tail any > > logs? All recommendations welcome. > > > Main question is whether you have any sort of connection to the internet > when you're trying to get a GPS lock? For me GPS on N900 works uber-fast, I > mean it's pretty much instant whenever I use it (Google Maps, Map Buddy, OVI > etc.). However, I tend to have device always online, so it most likely uses > that to download additional GPS data. No, I don't have a connection to the Internet when using Ovi Maps-thats the exact reason why I use Ovi Maps. You shouldn't be expected to use a network connection with an onboard GPS. Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
On 12 February 2010 20:17, Bernard Tyers wrote: > Is anything written to the OS when the GPS is running? Can we tail any > logs? All recommendations welcome. Main question is whether you have any sort of connection to the internet when you're trying to get a GPS lock? For me GPS on N900 works uber-fast, I mean it's pretty much instant whenever I use it (Google Maps, Map Buddy, OVI etc.). However, I tend to have device always online, so it most likely uses that to download additional GPS data. -- Dawid 'evad' Lorenz * http://adl.pl null://signatures are for wimps ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
Hi Andrea, - Original message - > Bernard Tyers wrote: > > issue. There's a diagnostic tool called, aptly, "location-test" which can you tell me which repos its located? I cant see it in the devel repos. > https://bugs.maemo.org/show_bug.cgi?id=5337 > https://bugs.maemo.org/show_bug.cgi?id=7026#c53 i'll check these later on today. Thanks again. Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > Bernard Tyers wrote: > > > Thanks. Ok I will have a look at this, but specifically, will this > > work also for acquiring a lock in Ovi Maps, or just "in general"? > > In general: the location library handles the > lock, all applications > using such library immediately benefit from one > application forcing a > specific lock mode. Ok great, so it *should* help Ovi Maps acquire a lock more successfully. All we can do is wait for Ovi Maps to become a proper navigation application :( Great, thanks for the help. Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
This is a bug in OVI maps. I think the link has already been given. The problem is that OVI opens the device to get a lock, but then "gives up" and closes it just before it can get a lock. It cycles doing this every few minutes, but unless you have an alternate signal, it's not enough time for the GPS to lock on it's own without feeder information (which requires a data link, via GPRS or wifi). This is supposedly going to be fixed on the next OVI push out, whenever that is. I'm hoping they add voice and turn by turn as well soon. Sad that a cheep 3 year old $40 Magellan can out-preform my expensive shiny new cell phone. :P Bernard Tyers wrote: = Hi there, I have been trying out my new N900 for the past few days and overall I really like it. The only problem I have left with it is the GPS. I have yet to get a regular location lock. The first time I used it it took approx 15 mins to update, in a location where it takes my E71 approx 2-3 mins. Leaving aside the unit has to calculate my location the first time it's turned on, that's a bloody long time. The second time I started it up, in the same location, I didn't get a lock at all. All the time I was using Ovi Maps (Which I know are basic, but surely GPS location update should work). I know how GPS works and have tried some troubleshooting, but I can't find any diag tools. At least on the Symbian OS there is a compass app which will give you your location in long & lat. Can anyone else comment? Am I the only one? Is the N900 GPS chipset abit weak (in whatever way in comparison to other Nokia devices)? Can anyone recommend any troubleshooting apps I can use to see where the issue might be? I saw minigpsd mentioned it can speed up the lock process on the gps. Can that help? (I'm not a coder, so maybe thats a wrong avenue...) Is anything written to the OS when the GPS is running? Can we tail any logs? All recommendations welcome. Thanks, Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > Bernard Tyers wrote: > > > Can anyone else comment? Am I the only one? > > You're not the only one and bugs.maemo.org has a few entries on this > issue. There's a diagnostic tool called, aptly, "location-test" which > can be used among other things to force the GPS subsystem to acquire the > lock using only a specific method (be that cellular, wifi or satellite). Hi Andrea, Thanks. Ok I will have a look at this, but specifically, will this work also for acquiring a lock in Ovi Maps, or just "in general"? Like I said in my previous mail, it looks like the gps is aquiring a lock quickly-ish when using gpsjinni, but Ovi Maps is VERRRY slow. Thanks, Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
- Original message - > On Fri, Feb 12, 2010 at 2:17 PM, Bernard Tyers > wrote: > > I know how GPS works and have tried some troubleshooting, but I can't find > > any > > diag tools. At least on the Symbian OS there is a compass app which will > > give > > you your location in long & lat. > > Enable extras-devel repo and try gpsjinni, it's a simple view of the > raw GPS data. Hi Paul, Thanks for the reply. Ok so I intsalled gpsjinni and it shows that I get a gps lock fairly quickly, and in the majority of locations. So good news- the gps unit is working more or less well. So what's the issue then with Ovi Maps? It seems completely deaf to the gps data. If this issue continues when/if Ovi Maps gets proper navigation and becomes actually useful, like on Symbian, this will be a big problem for me. Any suggestions on fixing Ovi Maps? Thanks, Bernard ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
Bernard Tyers wrote: > Can anyone else comment? Am I the only one? You're not the only one and bugs.maemo.org has a few entries on this issue. There's a diagnostic tool called, aptly, "location-test" which can be used among other things to force the GPS subsystem to acquire the lock using only a specific method (be that cellular, wifi or satellite). https://bugs.maemo.org/show_bug.cgi?id=5337 https://bugs.maemo.org/show_bug.cgi?id=7026#c53 Hope that helps, Andrea. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: Bad experience with N900 onboard GPS.
On Fri, Feb 12, 2010 at 2:17 PM, Bernard Tyers wrote: > I know how GPS works and have tried some troubleshooting, but I can't find > any diag tools. At least on the Symbian OS there is a compass app which will > give you your location in long & lat. Enable extras-devel repo and try gpsjinni, it's a simple view of the raw GPS data. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
