Database Users

Tomtom dropping GPS

Using TomTom v7.450 (build 9028) the device can work fine for hours, but sometimes I start Tomtom and it will find a GPS signal and then immediately drop it again.
When I look at the satellite information, it will do this...
1. No GPS device!
2. Poor signal, are you indoors?
3. Built-in GPS receiver
4. No GPS device!
5. Poor signal, are you indoors?
6. Built-in GPS receiver
7. No GPS device!
and repeat..
You can view a video showing this effect
@ youtube: http://uk.youtube.com/watch?v=VRkPmhbst0o
@ http/avi: http://phat.nooblet.org/htc.touch.hd_tomtom.gps.avi

Hi, I've the same problem on my Blackstone, GPS works well for days bu from today the GPS signal result discontinuous with any navigation software like Tomtom(various versions), Trackypro and iGO8...any idea? Thanks

I had the similar problem when I first installed TomTom. Which settings are you using? Because I used "built-in GPS" for TomTom and had the above problem. When I changed it to "Other NMEA GPS" with baud rate at 11200 ()or whatever the max is + COM4 then gps started working like a charm. Since then no signal drops, no lag and very quick fix. Not sure if it is just by chance or is it a real fix for the above problem, but worth trying as its working for me. However, it has been 2 days only. Not sure if after a while I will have this problem or not. I am using Tom Tom 7.910 with maps 6.75.

Can You try to set the hardware port from <None> to COM9? Seems work better, the GPS signal still present...but for now I'm at home

I have more or less the same problem !
Using TomTom v7.450 (build 9028) the device works fine the 1st week, but now, I start Tomtom it xan't find GPS device !
I tried to reinstall all without success...
I also tried all the COM available !

using tomtom 7 with NMEA com 4 max baud rate. Works just fine. 8 or 9 sats locked on constantly in open areas

I'm having the same problem, although I don't have TomTom 7. But it doesn't seem to be just TomTom that's having trouble finding the GPS (and when it does, it'll never get a fix).
The Google Maps application also gives me the "No GPS found" attitude.
I've installed the HTC GPS Tool, which does seem to find a bunch of satellites, but they all stay no-fix-reddish.
Are there any guidelines on how to setup the GPS on this thing? I find it a bit strange that my settings menu only lists an option "External GPS", and no "Internal/Built-In GPS".

Can confirm that the dropping of GPS is in other applications.
I use zürich map from Lonely Planet (sure its form 2003) and it will drop the signal in the open.
Have a feeling its internal on our devices.

One possibility is A-GPS.
It is Disabled by default, but it is possible that with tools like HD Tweak or Advanced Config Tool, you, even by being unaware of it, you activated (or better : enabled) it.
To me, it was a winner : after re-disabling A-GPS, my GPS started to be stable again, no matter what port I choosed and how I configured the Navigator program.
Give it a try, could be the solution that works for you

Hi there,
I've just picked up my lovely HTC Touch HD - I'd like to buy the TomTom 7 and the correct maps to go with it to allow it to work.
Can someone please tell me where I can go to stick my Visa card details into and buy please! i'm pretty confused on the TT website and on here there's allsorts of version numbers etc mentioned!
I'd just like to have a stable running TT on my Touch!
Any chance of also having the US & Canada maps working as well as the UK maps ?
Thanks !
Dennis! West London UK!

This is not a TomTom issue. I have same problem with IGo and VisualGPSce.
I use to resolve this issue this way (in IGo or VisualGPS) : I change the baudrate in GPS configuration. Switching 19200 to 38400, or reverse, or whatever : the GPS locks and is stable after few baudrate switches.

Theres some reports that the default "sleep" timeout for GPS is 1 second. Apparently the Microsoft Intermediate Driver only updates every 1 second so it could just miss it and go to sleep!
Try changing registry entry to 2000 (milliseconds)...
HKLM->system->currentcontrolset->GPSIntermediate Driver->Drivers-> SleepOnNoData

Tirinoarim said:
Theres some reports that the default "sleep" timeout for GPS is 1 second. Apparently the Microsoft Intermediate Driver only updates every 1 second so it could just miss it and go to sleep!
Try changing registry entry to 2000 (milliseconds)...
HKLM->system->currentcontrolset->GPSIntermediate Driver->Drivers-> SleepOnNoData
Click to expand...
Click to collapse
Already did it (currently set to 2500). But changes nothing (even after soft reset) : GPS keeps deconnecting/reconnecting as described (not every time; one in a while..).
Thanks anyways !

Just out of interest, do you have MobileJustice installed by any chance?

Absolutly not. Nor any software of this type, nor any software who can possibly take GPS in background..

I had the problem of TomTom getting satelites and then dropping them and saying it couldn't find the gps.
Disabling agps (quick gps) via advance config seemed to sort out the problem

AGPS is *not* quickGPS in my understanding. But this is unclear. For a proof, AGPS comes disabled by default, but quickGPS works out of the box. Can someone who knows for sure, precisely state if AGS and quickGPS are the same thing or not ?
I have disabled AGPS also with HD tweak (but quickGPS stills work..), and I have regulary (2 out of 3 times) this problem.

I had the same problem. Disabling the AGPS seems to have worked but I will wait for the data to expire before confirming.
The problem seems to be when I have poor GPS reception AND poor GSM. They seem to be calling upon each other for corrections but never resolve.
If this is the solution I will just rely on QuickGPS alone which has worked fine for years with TTN6.
Edit: I can now confirm disabling AGPS solved my problem.

had TTN7 running for a few days now.
Can't find the built in GPS. Having to set it to other Bluetooth GPS Receiver.
A bit hit and miss with signal / getting a fix.
I have turned off AGPS as well. Going to try out some of the settings you all have put up tomorrow.

AlexEv said:
had TTN7 running for a few days now.
Can't find the built in GPS. Having to set it to other Bluetooth GPS Receiver.
A bit hit and miss with signal / getting a fix.
I have turned off AGPS as well. Going to try out some of the settings you all have put up tomorrow.
Click to expand...
Click to collapse
Working great ...
AGPS off - Using COM 4

Assisted GPS Pharos?

The Pharos is supposed to have AGPS. Do they mean QuickGPS or is there really AGPS on it? Where can I find it on the Pharos?
I have the WM6.0 Dutch version.

when i turn on tomtom in my house it says im in the location of the nearest gsm beacon...before i have a satellite fix, thats assisted GPS i think...
quick gps only has the trajectories of satellites in the "local" sky so the gps chip can get a fix quicker

Strange, nothing happens when I start TomTom.
Can you give me your settings in the register:
HKLM>Software>HTC>SUPL AGPS>

i checked but no such key
wat is the setting of your key?

Keysetting in HKLM>Software>HTC>SUPL AGPS> is:
(Default) (value not set)
EnableAGPS 1
EnableGPSSmartMode 1
GPSMode 2
NumberFixes 389AC9FF
QosAccuracy 32 (50)
QosPerformance 59 (89)
ServerIP 195.207.101.126
Serverport 1E6C (7788)
TimeBetweenFixes 1
When I first started with the Pharos there was no AGPS, also not in the registry the Supl AGPS. I found a registry-entry for the Pharos on this site and put it on the Pharos. When I start 'Advanced Config' from Schaft I can see under GPS that AGPS is enabled.
When I start TomTom 7.9 there's no start of GPRS. Also my GPRS monitor sees no action. So I presume AGPS is not working.
Maybe I need some dll drivers, I don't know. Can somebody help?

you have a confusing story
first you talk about GPS and then about GPRS
these are 2 different things
GPRS is your data connection (in case EDGE is not available)
GPS is global positioning system and i didnt know tomtom 7.9 was out, i use 6.
if you do a simple search on the phorum you can see that tomtom 7.9 causes a few problems i suugest you read that!
my advice would be to revert back to 6 .. works great on the pharos

Maybe I'm confused. I thought Assited-GPS uses GPRS to make contact with the gsm beacons and so make a faster fix with these beacons. Am I wrong about that?
The builtin GPS from the Pharos works fine but is not very fast with the first fix. I thought AGPS would help making a faster fix.
I already had TomTom 7.4 and know 7.9 (cracked version). Works fine on the Pharos. I will look for the problems with 7.9 on the forum.
Thanks

hmmm yeah makes sense we do need a server to relay the info... but ive looked it up
http://en.wikipedia.org/wiki/AGPS
http://en.wikipedia.org/wiki/List_of_devices_with_Assisted_GPS
our device is on the list... but i dont think i have a server setting... and my gps (tomtom) doesnt have to have a connection to the internet.
strange but fun to find out how it works...

TomTom does not use the AGPS function. Enable quickgps to do this before you use your navigation software (TomTom). It can automatically download the satellite info for you which is good for about 2 days. You can update through your cellular connection if you have data on your plan or through activesync. TomTom 7 will work without using the AGPS function but it will take longer to find a fix on the satellites. TomTom 7 is required if you want to use the internal gps receiver with TomTom. TomTom 6 does not work without some hacks.

I think that Google Maps do use the AGPS function. It is much faster to find the coordinates than fx TomTom and other GPS software i've tried, so i think that a program needs to be developed with use of the agps function if it uses it..

kaloer said:
I think that Google Maps do use the AGPS function. It is much faster to find the coordinates than fx TomTom and other GPS software i've tried, so i think that a program needs to be developed with use of the agps function if it uses it..
Click to expand...
Click to collapse
the fast "fix" that you see with google maps it's not a gps fix... it shows you the cell radio where you are hooked

poldo964 said:
the fast "fix" that you see with google maps it's not a gps fix... it shows you the cell radio where you are hooked
Click to expand...
Click to collapse
Ohh, okay. That's the reason for the very big radius.. But pretty smart after all..

GPS signal

hello
has anyone considered a way to boost gps signal?
i am pretty disappointed about GPS on my treo, i tried to use it in high mountain without positive results, it also works bad/or doesn't work at all when the weather is bad
there are many external antennas but as far as i know it's useless for treo 850 because of lack of output :/
any ideas ??
i use tt7, igo8
one more thing, after 1-2hours of using gps tomtom claims that it can't find gps modul and i have to restart treo... is this issue of app or device ??

where are you using it? Did I get it right that you are using a version with the german rom in the US?
I used a US GSM Treo Pro for about the weeks for the specific purpose of testing against my Treo 800w and found the GSM Pro GPS to be excellent. I
You now it can go between aGPS and standalone but aGPS depends on proper settings for a carrier in the region you are in, right?

I used it in Italy, for now i use treo in Poland it works however i expected better quality, i found another thing after 1-2 hours of using gps - phone has 40 'C, this is pretty high isn't it?

marcinsoo said:
I used it in Italy, for now i use treo in Poland it works however i expected better quality, i found another thing after 1-2 hours of using gps - phone has 40 'C, this is pretty high isn't it?
Click to expand...
Click to collapse
The phone is going to get hot after two hours of using GPS (or watching video).
I find the GPS to be pretty good on the unlocked GSM Treo Pro here in the U.S. Starting QuickGPS and downloading updated satellite data, then opening Google Maps results in resonably fast GPS locks for me. Do you have A-GPS enabled or disabled?

i've got german version so i hard to say :/ but i quess i do not use A-GPS

marcinsoo said:
i've got german version so i hard to say :/ but i quess i do not use A-GPS
Click to expand...
Click to collapse
I used the GPS on my Treo Pro outside today for the first time (using driving directions in Google Maps) and it worked flawlessly. It locked on in less than a minute and never dropped the signal while I drove to my destination.
I have A-GPS disabled via the Advanced Configuration utility. Do you know the specs on the German version? What GPS application are you using? Did you try getting a lock with an application like GPS Test then opening your GPS maps program?

i use tomtom 7.9 & IGo8. Both work quite good, but i found that after ~1hour they lose connection :/ therefore i claim that gps modul is poor in my treo and i

marcinsoo said:
i use tomtom 7.9 & IGo8. Both work quite good, but i found that after ~1hour they lose connection :/ therefore i claim that gps modul is poor in my treo and i
Click to expand...
Click to collapse
I wonder if there is a "GPS timeout" buried somewhere in the registry? I haven't had the GPS running for more than 30 minutes at a time - it has worked fine for me.

works perfectly , i installed new tomtom 7 915

GPS and Weather...

To get GPS working on the HTC Touch 3G do you have to have an internet connection or can I just use it like I do with my SatNav system in my car?
Also, I read somewhere that the weather is updated by GPS but I can't seem to get that working. The manual seems to point at needing an internet connection!
Any help on this would be great!
Thanks.

1st question : Gps only needs a software like TomTom to run, no internet connection except if you want google maps.
2nd question : Weather needs a connection (either wifi or 3G) to update, it isn't updated by the GPS.

moedinha said:
1st question : Gps only needs a software like TomTom to run, no internet connection except if you want google maps.
2nd question : Weather needs a connection (either wifi or 3G) to update, it isn't updated by the GPS.
Click to expand...
Click to collapse
Right, I used Google Maps and maybe that's why it asked me for a connection. Anyone have any ideas for the best mobile navigation software for the Touch 3G? I don't want something that will run so slow I can't use it. Something simple and fast would be good.
Thanks moedinha

quaium said:
Right, I used Google Maps and maybe that's why it asked me for a connection. Anyone have any ideas for the best mobile navigation software for the Touch 3G? I don't want something that will run so slow I can't use it. Something simple and fast would be good.
Thanks moedinha
Click to expand...
Click to collapse
Try Garmin Mobile XT. It's good.
have a look a this discussion http://forum.xda-developers.com/showthread.php?t=472110&highlight=gps+software

I agree with azahidi,
I've been using Garmin Mobile XT since the day I got my Touch 3G
I always get a satellite lock in under 10 seconds (just update QuickGPS)
I have Thailand and Philippines map installed

Google Maps are good and are free, also TomTom is a good recommendation.

[Q] How to use GPS with no internet connection?

Hi, What do I need for my blackstone in order to use any (suggestions, which is better, would be a great help) GPS sowtware without internet connection. I am not an expert in this, but I know that GPS devices (like tom tom or similar) use satellite data to show coordinates. How can this be done on my touch hd? As only preinstalled program is google maps that require internet connection.
I don't have unlimited data plan, so this is extremely expensive for me, but I am a fan of geocatching, so I need GPS.
Please help me with description of how this GPS works and what soft should I use?
Thanks

There are lots of good Navigation/GPS Apps around that read standalone maps from your SDCard.
Take your pick.
Some info here http://forum.xda-developers.com/showthread.php?t=566657

bethybabes69 said:
There are lots of good Navigation/GPS Apps around that read standalone maps from your SDCard.
Take your pick.
Some info here http://forum.xda-developers.com/showthread.php?t=566657
Click to expand...
Click to collapse
Hi, thank for the info, but....
I installed TT7 with my region maps, but I still seem not to receive any GPS signal - my phone seems not to catch any satellite signal - is this a setting issue?

in tomtom7, just access the gps settings and set them to "internal gps receiver", then it should work immediately, given that in your very location you have gps coverage.

I've found that my Touch HD's GPS capabilities work great when I'm at home testing them, then fails to locate any satellites when I'm lost! lol
Not exactly true - but has got me before!
I would suggest that you try your GPS in various locations just to make sure that the building you live / work in, or the weather isn't blocking the signal that your phones GPS listens for...
I used TomTom for ages without issue, it can be copied directly from a memory card on a TomTom compatible device usually.
Recently my Dad bought iGo8 with the entire world maps installed, so I pinched that and run it straight off my storage card with just a few teething problems. This is the best GPS / SatNav on my phone so far...

+1 for iGO8
Best GPS software by far for me. This is the only and single reason why I haven't bought an Android phone yet.
If they would have created the same skinable thing for a HTC Desire etc the HD would be history.
If I were you.
1) disable a-gps, causes roaming costs and most gps application freak out on it (download advanced config tool and disable it that way)
Lock, no lock, lock, ... mostly caused by agps (assisted-gps). Assisted means that it also gets data from the cell-tower which abroad can cost you loads of money (and yes I had that once)
If you use HTC quick gps you will probably get a lock in seconds if you are outside so no need for assisted.
2) install the gps mod driver , this one 'thinks' ahead by calculating points that it gets from the GPS receiver. If you don't feel confident about this one skip it but read the thread and keep it in the back of your head.
3) buy iGO8 and install the gurjon skin which makes iGO look fantastic and makes it fully configurable the way you want it.
4) enjoy a fantastic GPS system