AGPS

[Ossi]

I know this topic has been discussed previously, but I haven't been able to find the answer yet so here goes:

As I understand it, GPS is working in all/most sense and cm based builds however AGPS seems to be an issue all have in common. From what I understand AGPS is just a helper function for quicker GPS locking so even though AGPS isnt working, you should still be able to get a lock.

Now, since before we got nand based ROMs for HD2 I used haret to load android from my SD card. Back then I used GPS depended applications like c:geo for geocaching and car navigation progs, as well as progs for finding nearest resturant when I visit other cities/countries.

Been a while since I had the need for it, but recently with the nice weather geocaching for example have become an interest. What I see now is that none of the ginger/cm/non-sense builds I have tried have given me a GPS lock. I have tried the GPS fixes, flashed Norway.zip for tweaking my gps.conf, installed gps-status but no chance in getting a lock. and yes, I have been giving it quite some time, outdoors.

Anyone else having these problems? I see from screenshots on for example the HyperDroidCM7 ROM that you can get a lock, so its not a problem for everybody. Is my assumption on what AGPS is, correct? Any worarounds to get GPS functionality working? Strange to have these problems now, since it worked kinda well before

EDIT: tried now with [10.MAR.11][CWM] RAFDROID HD 4.0.2|Fastest Full DesHD|DATA2EXT|[Rafpigna 1.8 OC], still no lock

 

[huggs]

There's no driver support for AGPS, so the best we can do for now is to tweak our gps.conf and use gps status. If you can't get a lock at all, it could be a HW problem. If geocaching is a necessity for you, you could go back to WM and sd Android, use WM to grab AGPS data, then boot into Android.

Sent from my HTC HD2 using XDA App

 

[AngelDeath]

I use that rom, but the 4.0 (really not much of a difference for me between the 4.0 and 4.0.2), and I always have a lock quickly.

1) Did you try installing the GPSFix.0.1 apk file and running it? that downloads a criticial file xtra.bin into your data folder.

Also try the 1.2 files and see if you have any luck, because I know in the 4.0 of Rafdroid, the gps works very well.

 

[lukesan]

Same as Angeldeath, I use Rafdroid and it works ok.

Mine was faulty a couple of weeks ago and HTC warranty had to swap the board (and also did the screen, keys etc). In the end it would still lock but after a while it would freez or have no reception anymore.

But to be honest I don't like the GPS receiver at all in the HD2. There are numerous tests and other people to back me up on the tremendous jitter the receiver has which makes you jump all over the place.
A nice test is to place it in the car and switch on the cruiscontrol at 100km/h, or even worse at 180km/h. The thing will jump atleast 10% in speed.

When I need to drive or walk long trips I use my iBlue 747A+ 66 Ch Bluetooth GPS Logger which you can buy cheap on ebay.
That thing logs, is fast, deadly accurate and with the free 'bluetooth gps' on the market you can even use it on the HD2

 

[Zephyrot]

There's no driver support for AGPS, so the best we can do for now is to tweak our gps.conf and use gps status. If you can't get a lock at all, it could be a HW problem. If geocaching is a necessity for you, you could go back to WM and sd Android, use WM to grab AGPS data, then boot into Android.

Sent from my HTC HD2 using XDA App

The AGPS thing on WM and then booting into Android is a myth, there's an extenvise work being done to make AGPS work on Android for our HD2s, but they have not managed to get it working yet.

Android on our HD2 simply doesnt have any commands to load AGPS, and the chip itself doesnt save any data. In the remote case it saved anything, there's nothing on the GPS Driver itself to read it

Quick tip to get your GPS to work:

Load Google Maps, let it try to get a lock, if after 1 or 2 mins it doesnt get any lock force close the app, turn off then back on the GPS and reload Google Maps. If you still cant get a lock, let it sit for at least 5 mins, then Force Close it again.
after that it should get you a lock in less than 10 secs.

Easiest way to FC it is enabling the "hold back to FC app" option on CM builds.