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Hi guys,
I think the subject says it all...
I have a Diamond which suffers from serious GPS lag (not fix!). This means that when I'm driving, my car is always up to 50m ahead of what TomTom or IGO tells me that I am...
I'm thinking about changing my device as nobody seems to know the cause of this...
So, I wonder if Rapheal has the same issue or not...
HastaSSSS
Here's what i tested for you on the way to work...
Using TomTom6 (6.032), driving at 30mph, using the tip if the blue arrow as my position (same as i always used on TytnII) i would say my car was no more than 5m behind were i should be. No issue going down the right road or turn.
Same situation as johnk1973. No 50 meters lag, but aprox. 5 meters.
Same problem here on Raphael, TT7 is 50 meters behind. Will test it tonight if it also occurs with TT6.
Same here with tt7 and igo8....
Now this is going to get complicated....
I had Diamond before and NEVER experienced GPS lag.
I tried almost every official and cooked ROM and had no problems with GPS.
Recently I switched to Raphael....
And guess what... GPS lag !
I used my Diamond and Raphael in identical conditions, with the same app (iGO 8).
I'll try to test it more.
I'll post if I find anything useful to you.
Cheers,
Sh*t...that means Raphael is a "no go" for me...
Unless we solve the problem...whatever it might be...
Please keep on posting your findings about this issue...I like very much Diamond and Diamond Pro....but I'm not willing to have a device without 100% functionality...
HastaSSSS
I have a Touch Pro with iGo8 installed. I realised this "50m lag" on my business trip this Monday but I thought it was due to the speed of the car (I was driving very fast for the most of the time). Now I see the problem might be a little more complicated.
On the other hand the 50m is not so bad - I never had a wrong turn, the acoustic signalization of iGo8 is very good. Nevertheless, I would be glad if this could be fixed...
And another thing - I'm not sure if you are aware of the charging problem while using GPS. My Touch Pro actually stopped charging because of overheating and was running only on the battery. So be aware of this fact too.
But this is a different issue, I'm sure there is a thread for this.
I dont have the problem with TT6.
I second this issue, both with TT7 and IGO8 (haven't tried it with another one yet)
Guys I had GPS lag on TT7 when I fist used it (Only tried it for 5min) it was awful. Mainly everytime I turned a corner whilst driving.
Then I did the following changes:
\start\settings\system\external GPS -> Set GPS Program port COM4; Hardware NONE; Access Manage GPS automatically.
Hit ok, wait 10 secs, switch off the device and then soft reset.
Now go to TT7 change the GPS prefences, to use bluetooth device and selected COM4.
No my GPS is perfect now, no problems at all. Have tried it with two different ROMs and no problems.
I have TT7 installed on the main memory and the maps on an Sandisk 8GB Class 4 SDHC card.
Radio ROM is 1.02.25.19 if that helps? and AGPS is turned on a up-to-date.
BTW it was exactly the same when using google maps.
Did you also try it by just setting tomtom gps to bluetooth? I'll give that a shot anyway before going into the register... tnx for the tip
Please keep in mind that you'll get an update of your past position only once per second. This means: The faster your velocity the more inexact the position will be, because the distance you'll pass in this second becomes longer and longer:
@30kmph: ~8m
@50kmph: ~14m
@80kmph: ~22m
@100kmph: ~27m
@130kmph: ~36m
Additionally there is the inaccuracy which comes with GPS: In good times you may have ~10m divergence on average. But with weaker signal (which one may have driving in a city) it will become even more. So keep in mind that GPS will tell you, where you've been one second ago (plus the divergence).
By the time I get my Diamond Pro, I'll collate this at the same time with my X500, which has a build in Sirf3 receiver.
I am having a slightly different issue with my TP using iGuidance 4. Although the unit aquires a signal faster than any other device I have used in the past, it seems to lag or freeze as I drive. It will not update the time, speed or position unless I press a button or something on the screen. There is another thread on XDA (I think in the Diamond or Kaiser sections) that claims to have solved this issue, but the fix doesn't work on my Touch Pro (in fact it completely freezes my iGuidance requiring a soft reset).
Hi,
I'm using Ndrive and TomTom 7.
on NDrive I don't have any problem, it's fast.
on TomTom is slow..
I thing the problem is on TomTom using this GPS of Raphael.
WizP said:
Guys I had GPS lag on TT7 when I fist used it (Only tried it for 5min) it was awful. Mainly everytime I turned a corner whilst driving.
Then I did the following changes:
\start\settings\system\external GPS -> Set GPS Program port COM4; Hardware NONE; Access Manage GPS automatically.
Hit ok, wait 10 secs, switch off the device and then soft reset.
Now go to TT7 change the GPS prefences, to use bluetooth device and selected COM4.
No my GPS is perfect now, no problems at all. Have tried it with two different ROMs and no problems.
I have TT7 installed on the main memory and the maps on an Sandisk 8GB Class 4 SDHC card.
Radio ROM is 1.02.25.19 if that helps? and AGPS is turned on a up-to-date.
BTW it was exactly the same when using google maps.
Click to expand...
Click to collapse
these settings are the settings that are preset. Hence nothing changed. the lag on the diamond is bad but this is awful.
WizP said:
Guys I had GPS lag on TT7 when I fist used it (Only tried it for 5min) it was awful. Mainly everytime I turned a corner whilst driving.
Then I did the following changes:
\start\settings\system\external GPS -> Set GPS Program port COM4; Hardware NONE; Access Manage GPS automatically.
Hit ok, wait 10 secs, switch off the device and then soft reset.
Now go to TT7 change the GPS prefences, to use bluetooth device and selected COM4.
No my GPS is perfect now, no problems at all. Have tried it with two different ROMs and no problems.
I have TT7 installed on the main memory and the maps on an Sandisk 8GB Class 4 SDHC card.
Radio ROM is 1.02.25.19 if that helps? and AGPS is turned on a up-to-date.
BTW it was exactly the same when using google maps.
Click to expand...
Click to collapse
these settings are the settings that are preset. Hence nothing changed. the lag on the diamond is bad but this is awful.
Using Igo8 very intensively with my TP, no lag at all. Compared it this morning with my VW passat stock nav system, and again, i notice no lag.
I have the settings in the posts above, and have very little lag. I am using QuickGPS instead of AGPS, but all else is the same. My main probklem is how long it takes to get a lock (much longer than on my old Kaiser), but since installing DCS's ROM and doing a hard reset immediately after that does seem to have improved - I often get a lock from cold within a minute now..
Rowan
I believe the reason that some people are getting horrible GPS lag while others get nothing has to do with the Radio ROM versions that came installed with the device. Most custom ROMS don't update the Radio ROM. It's 12am and I'm posting this from my TP, so I'll just tell you that the Radio thread is stickied in the Raphael ROM dev forum.
EDIT: http://forum.xda-developers.com/showthread.php?t=439566
Hi All,
Like many i've had numerous problems with my GPS. I came from a Tytn II so I know how fast the unit should lock and work. In fact I've done side by side comparisons with my wife's TyTn II and am fairly disappointed thus far.
For the longest time I couldn't even lock in less than 30 mins, after trying several ROMS and radios. I used TomTom, Garmin, and Igo 8 (which I love) and issues all around.
Finally I solved my locking problem by doing the simplest of things, set the baud rate in the settings of the 3rd party GPS apps (Igo in this case) to 4800bps. Now I reliably get a lock within 60-90 seconds. I still however have lag, but at least it's somewhat usable.
Anyways hope this helps others with my issue.
Are you using Quick GPS and updating it's data when it expires, are you getting a lock with a third party app (GPS Test or HTC GPS Tool or others) before running your nav software? In IGO, when changing from 4800 from say have you tried the highest (100k+ whatever not sure of the number) baud are you seeing much of a difference in your position on screen versus your actual position?
Everyone seems to have a different story when you ask them about their experiences with their GPS on their Raphael. >_>
Btw what ROM are you using? Have you tried Sleuths GPS cab? I'm not 100% positive I have the latest cab or I would post it but there are some settings in the registry that you can change that deliver somewhat of a better experience (in my case and many others) as far as position lag is concerned. I also use the highest baud settings as Sleuth recommended.
Many thanks to everyone who is going out of their way to do some working towards a fix for Raphael's flakey GPS.
im using the highest baud on my raphael as mentioned above by X2D. there are tweaks that can be done in the registry or just find a tweak cab that has compiled those tweaks.. remember to update quick gps when it expires.. with quick gps updated i get a fix in about 20-30 seconds.. and this also depends on what radio rom you have.. i have Radio version: 1.08.25.20.. i think it's the lates. well read the radio thread on raphael section and you'll find one suitable for you , i guess i've heard somemany say that some of the older versions works better and so forth.. if you have your phone security / cid unlocked you can try the latest radio rom from blackstone on your raphael which is to be the best so far at this date... well correct me if im wrong though.. well there are another option, hot start on gps but that might consume little more battery and so forth.. read more about it on this forum
This is usual thread all over net..
I have problem, a big one... Every cooked rom I have tried works great but GPS dont work. Fix takes 15 - 20 min quickgps updates normaly but no fix... with original rom and quickgps updated fix is under 30sec but i have problem with touch screen on original ROM. so i have spend 15 days of experimenting, flashing various roms, radios but no luck....
interesting is that when i connect external gps antena with amplifier i get fix around 1 - 2min.... then it works with integrated, but 2 hours later same problem...
Kaiser130 is my device
tried roms: shifu v1 & v2 basic & full, Dutty's WM6.1, REV_ROM_V8, SimpleOsManila, AtheneOS....
also i have tried exporting registry branch from original rom for quickgps and copyed quickgps files over but no luck.
no luck
I have used almost all of these roms and my lock is in 2-3 minutes. 1st, make sure you are using the recommend radio. If you use the wrong Radio, you will never get a lock. Also make sure it is not just your area; if there are only a few sat's then the GPS module in the phone will take for ever for a lock.
vratko28 said:
This is usual thread all over net..
I have problem, a big one... Every cooked rom
Click to expand...
Click to collapse
C'Mon dude really... 3rd post and you come out dropping bombs like "every" and "it's the usual" and "a problem... a big one"
I have used many different ROMs here too and have not had a single issue with GPS working!
I think "every" and "usual" is disrespectful to the cooks here and that your issue is likely hardware (hence your comment about it working w/ an external ant) or possibly between the screen and the seat
have you tried gpstest to check your com ports and then set it manually?
I also had the same issues
already changed the com port and radio from 1.65.16.25 until 1.70.19.09 (KAISER Radio)
As u see raf1987 has same problem as me, yesterday I have tried original HTC WWE 6.1 rom but with same result.
I dont mean to disrespect cooks, and dont see what is problem with me having 3 posts??
k2rolla503 Yes I have tried gpstest, nonigps plot.... they find satelites but no fix 1 to 4 satelites all time but no fix.. signall strength is normal in all roms (graphicaly to me).
I too have the same problem.
I find the GPS fixes to be very flaky. I've used both the ROMs from Laurentius up through V10 and now using Phoenix II.3.
Laurentius ROMs I found I had much faster lock time if I downloaded the ephimeral file right before I used my GPS. We are talking 24 hours between uses. This could mean the difference between a 2 minute lock and a 20 minute lock. I've never gotten GPSTest to show me anything other than starting...
On Phoenix II.3, the ephimeral file only last for 3 days instead of 7 like Laurentius. Once I saw the fastest lock in my life ever on this ROM, it literally must have locked in 15-30 seconds. I have never seen it do that again. Currently it's taking me a good 10-20 minutes to lock on average. I have to start up my GPS 10 minutes before I go anywhere just to get it warmed up.
I've also tried fiddling with the assisted GPS setting on both ROMs. I found that with Laurentius the fix is slightly faster. On Phoenix I haven't noticed any real difference in getting a fix aGPS vs GPS. Nor do I find it assists in tunnels.
The only thing that really bothers me about aGPS is that I get that dialup connection dialog that says it fails to connect every time I use TomTom. I have to hit dismiss before it appears to start trying to get a fix. I've tried reapplying the connection settings for AT&T, that didn't seem to help much. It is super annoying.
In the end, GPS does work, but like the OP, I found that my fixes were consistently faster on the stock ROM than the cooked ROMs. I too mean no disrespect and I appreciate the hard work that goes in to each and every one of these ROMs even if I don't use them. I too like the OP just want my fix to be as fast as those claimed here and elsewhere. It can be frustrating to hear about these fast lock times and have to suffer with long lock times. It's especially annoying to me because I travel for business a lot and find that I am now nearly half way to my destination before I finally get a lock.
While I may not have many posts, I do follow these forums regularly. I hope that my input will be constructively used to find an answer if there is one to be found.
I have no issue using L26's TF3D V4, Athine OS Jan 22, Mbarvian Solace 1.5 and Josh' Revealed 21500. All has the GPS working fine. I'm not that particular that I measure individual response time.
As long as it locks within 1-2 mins (from nothing), it's ok to me.
hmm.... i think , i found the solution... don't know if it could work for others
now, I use PDA corner from Abusalza... with Radio version 1.70.xx.xx
so, after flashing your new rom... make sure you update the GPS support programs like quick gps , etc
then, execute your GPS program ( I use Garmin for this).. and make sure you are outside of your house, or apartment, or wherever..
the reason why my tytn II could not find satelites is because I did it in my house, did not think that outside my house could work (because my Trinity could detect satelites in my house without any support GPS program like quick gps)
then... your tytn II should detect the satelites and GPS is activated...
NB: sorry for my bad english
k2rolla503 said:
have you tried gpstest to check your com ports and then set it manually?
Click to expand...
Click to collapse
I am having the same problem. The original Three (Australian) ROM would get a GPS lock within seconds.Now, I take 20smins to get a lock.
ROM version: AthineOS WWE
ROM date: 1/22/09
Radio Version: 1.65.24.36
Protocol version: 25.94.40.06H
I have just used GPS test and the only thing I changed was the baud from 4800 to 9600. Will try it out later, but hope it works.
http://www.smartphone.net/software_detail.asp?id=3170
PS Most of us know that GPS works only if there is line of sight with the satellites, so yes, I am outside on cloudless days when I try to get locks.
PPS If it dont work, I might go back to official ROM. http://www.htc.com/au/SupportDownload.aspx?p_id=13&cat=2&dl_id=342.
flash back to WM6.0, there are no problems with gps. every fix in 30 sec.
Hmm I would like to go back to 6.0 but my provider has only this rom 6.1 for download that has touch screen problem...
Any link to 6.0 WWE would be helpful
Found 6.0 sry.... ill try and post reply
Search the Wiki. There're links to various WWE versions.
Hmm, I wonder then what the difference is between 6.0 and the higher version that causes this inconsistency in locking. This would seem to indicate software issue rather than a hardware issue. I love the newer ROMs but the inconsistency or complete latency in getting a lock can be extremely annoying especially when you need a lock quickly.
jorakae said:
Hmm, I wonder then what the difference is between 6.0 and the higher version that causes this inconsistency in locking. This would seem to indicate software issue rather than a hardware issue. I love the newer ROMs but the inconsistency or complete latency in getting a lock can be extremely annoying especially when you need a lock quickly.
Click to expand...
Click to collapse
I changed the baud from 4800 to 9600 and so far, the GPS locks within 30 seconds. I need further testing, but perhaps the default settings of the cooked ROMs is causing this problem?
I have tried and sucesfuly cooked ROM from stock firmware, added some apps, replaced buggy touch.dll so far so good ROM is 6.1 (WWE 3.31.xxx) using radio 1.65.20.15 i think.
Yesterday cloudy weather with rain i got lock within 4min cold start after flash, today morning warm start 2min (still cloudy no rain) and around noon no clouds got lock in 5sec.
Big THANX to SHIFU for help with dll
help with dll?
hi Vratko,
could you provide more info on the dll that u got helped with?? cos as u can see, lots of us are facing the same problems....even i have tried all sorts of ROM's and radios....yet no success in getting a quick lock...any specific settings to be done?? any
Hi,
I have different problem on GPS, I am using Garmin DK Series, dated 01/16/09. The problem is if use GPS for more then 10 min, back of the kaiser started to heatup, if I turn it off, after a while it is fine. Otherwise, it is detecting the GPS faster. I have downloaded QuickGPS & SeaSGEE.
Is anyone having these problem.
Thanks
Vratoko:
5s ????????????????????????? Please do enlighten us.
Newwonder:
Can you please provide SeaSGEE link. What does it do? is it like quick GPS?
I've searched the forum but I can't find any similar problem for Polaris.
I recently upgrade my Polaris into WM6.1 official ROM.
Everything looks fine until a few days ago my Garmin,Google Map & QuickGPS start working improperly.
All of my GPS software can't find any GPS device.
It just blank,no satellite signal at all,even after a few hours.
I've tried many GPS tools to analyze but all useless.
I've tried to recover from my Sprite backups but even the first backup with working GPS state can't solve the problem.
So I decided to Hard Reset.
It worked,but not for long...
The same problem occurs so I try to analyze the cause.
The cause is invalid program behavior :
WM Error Reporting
CE-Star
...and some other software built for older WM
The BIG Question is....why & how?
Why some other older software works why some other not.
Why newer software can also cause this ??
How to solve this problems ??
I hope someone here can help me solve this problem
You have problem because old software is not compatible with WM 6.1
I'm sorry to tell you that you did not search well, because all kinds of trouble with 6.1 are described in this thread:
http://forum.xda-developers.com/showthread.php?t=411883&page=13
My search keyword is "GPS problem" & I can't find anything related with Polaris...
...and even that thread only mention GPS not work well or slow.
My problem is GPS not working at all after a few days of use & after installing several apps (new & old).
(CE-Star & WM Error Reporting is a new apps)
BTW,it never happen when I use my old ROM which is the official WM6.0 ROM
I've installed many old software (for 2002,2003,WM5) & I never get any problem with my old ROM.
Only about a week I use the new ROM (official WM6.1 ROM) I get this problem (GPS inactive).
one more symptoms is sometimes my GPS LED signal turned on by itself right after soft reset.
That's why I assume it is WM6.1 BUG...
Any other solution...please ?
d4rkkn16ht said:
one more symptoms is sometimes my GPS LED signal turned on by itself right after soft reset.
That's why I assume it is WM6.1 BUG...
Click to expand...
Click to collapse
This is not due to WM 6.1 - it never happens to me.
However, I don't know what is cause of your problem. Are you sure that there is no hardware error?
Bodisson said:
This is not due to WM 6.1 - it never happens to me.
However, I don't know what is cause of your problem. Are you sure that there is no hardware error?
Click to expand...
Click to collapse
I'm sure of it.
The GPS is fine if I install nothing except GPS software (garmin & google map).
When I forgot to disable the WM Error Reporting & once it report an error....the GPS stops working.
That's why I disable WM Error Reporting.
So, if there is only Garmin soft & Google maps there is no GPS error?
Then this could be a software conflict.
I'm afraid that you have to do installation of other software you use one by one, on try-untill-it-fails scheme. Start with software which is most important to you... i.e. Total Commander, Skype, S2U2...
Bodisson said:
So, if there is only Garmin soft & Google maps there is no GPS error?
Then this could be a software conflict.
I'm afraid that you have to do installation of other software you use one by one, on try-untill-it-fails scheme. Start with software which is most important to you... i.e. Total Commander, Skype, S2U2...
Click to expand...
Click to collapse
How can a software conflict caused a Hardware malfunction...
That's why I call it WM6.1 Bug.
Software (non driver) conflict must not caused hardware malfunction.
I've done that 5 times already (5 times hard reset)...& is going to be 6
I'm tired of doing that.
I can't restore my backup bcoz the problem is persisting.
I hope anyone of you can help me with another solution
Hi,
have you tried to look at the data coming from the GPS hardware, for example with the HTC GPS Tool
You will be able to see better what's happening than using nav or mapping software.
HTH
Kim
BTW the GPS hardware in my Orbit 2 works *much* more reliably than the same hardware in my Ignito/Diamond and IMO makes the Orbit 2 an all round better machine, I conclude that the problems with the Diamond are due to a poorly implemented antenna.
@Bodisson, have you returned your Polaris to WM6.0? I rashly upgraded to 6.1 and I'm suspicious that it's causing some problems, e.g. with biotouch freezing etc. I'd be interested to discuss
cozzykim said:
Hi,
have you tried to look at the data coming from the GPS hardware, for example with the HTC GPS Tool
You will be able to see better what's happening than using nav or mapping software.
HTH
Kim
BTW the GPS hardware in my Orbit 2 works *much* more reliably than the same hardware in my Ignito/Diamond and IMO makes the Orbit 2 an all round better machine, I conclude that the problems with the Diamond are due to a poorly implemented antenna.
@Bodisson, have you returned your Polaris to WM6.0? I rashly upgraded to 6.1 and I'm suspicious that it's causing some problems, e.g. with biotouch freezing etc. I'd be interested to discuss
Click to expand...
Click to collapse
As I said on my first post :
d4rkkn16ht said:
.............
I've tried many GPS tools to analyze but all useless.
.............
Click to expand...
Click to collapse
...and that include HTC GPS Tool, some other GPS tools.
The result is a blank data, not even a weak signal.
Usually when my GPS works,at least it shows weak signal in Garmin (when not in open space & of course no fix).
But when it's "dead" (like just now....6th time already & just Hard reset to make it work again) no signal at all & google map even tell me that I don't have any GPS attached.
O.K. - Then how about GPS Cycle Computer which can use its own custom internal DLL to bypass the winmo DLL.
I guess if that doesn't work then maybe your internal antenna has come adrift (do you have an external antenna to try) or the hardware is faulty?
EDIT: "I've tried many GPS tools to analyze but all useless" You haven't told us which tools you tried, they aren't useless, you *may* have a hardware fault!
cozzykim said:
O.K. - Then how about GPS Cycle Computer which can use its own custom internal DLL to bypass the winmo DLL.
I guess if that doesn't work then maybe your internal antenna has come adrift (do you have an external antenna to try) or the hardware is faulty?
EDIT: "I've tried many GPS tools to analyze but all useless" You haven't told us which tools you tried, they aren't useless, you *may* have a hardware fault!
Click to expand...
Click to collapse
I'll try that...thanx
BTW,i said "it was useless" becoz it can't solve my problem...all stated the same : no GPS signal & even no GPS at all.
about the tools....sorry...my bad...
I've tried at least 2 tools & 3 GPS apps.
Tools : HTC GPS Tool & GPS Toggle.
Apps : Garmin XT,Google Maps & Palringo (locator).
About hardware fault...everytime I hard reset it work.
...so I don't think it's hardware fault.
and also Quick GPS always reporting connection error when the GPS stop working.
I've tested the connection & there is no problem with the connection.
I also tried connecting it with a DSL connection & still connection error.
This error never happen when my GPS work.
At last I think I know what cause it & how to prevent it happening.
After some experiments & analysis, I can conclude it that the cause is Registry Bug.
Everytime I Install many new software & didn't give them enough time to load the registry the same problem happened.
To prevent that from happening I install the other software 1 by 1 & give them time to load the registry properly about 30 sec - 3 minutes & the problem is FIXED
There is likely no problem when the software I installed did no registry changes (at least according to my experiments).
As I wrote in post #6 - software conflict.
BTW, QuickGPS does nothing with GPS hardware - it just updates satelite data. It's error is regarding connectivity to internet!
But, I'm glad that all is working now.
Bodisson said:
As I wrote in post #6 - software conflict.
BTW, QuickGPS does nothing with GPS hardware - it just updates satelite data. It's error is regarding connectivity to internet!
But, I'm glad that all is working now.
Click to expand...
Click to collapse
I don't think it's a software conflict
As I mentioned before,the problem only occurred when I install many apps all at once (which i usually did )
The registry entries of all apps were queuing on the memory before all can be loaded & that caused the problem (GPS down).
All the apps I mentioned before causing the problem because it did a lot of registry modifications (but I don't know with WM Error Reporting).
As I installed more & more apps with many registry modification, without waiting for the registry to load, the problem occurred.
Now I can install all apps perfectly (1 by 1 with delay about 30 sec - 3 min every installation)
About QuickGPS...
I know that it's only download the GPS data & has no connection with the Hardware.
...but it help me realize that QuickGPS is also accessing registry.
When many new registry queuing to be loaded,QuickGPS can't access the registry properly & prevent it to update the data.
Thanx for replying anyway
i went on a few drives today to test out my gps, the odd thing is i couldnt get it to misbehave in a significant way. i am using eugenes ginger clone and da_g's update.zip using his own jupiter.xml. i chose his control plane version. i also used some files from jj4 not because i thought they were better but because i was experimenting with the jm9 "FIX" files but wanted to revert back and grabbed the wrong ones from my computer.
my lbs test settings were:
Sesssion Type: tracking
Test Mode: s/w Test
Operation mode: Standalone
Start mode: Hot start
GPS Plus: OFF
Dynamic accuracy: OFF
accuracy: 50
Logging: OFF
supl settings:
server: supl.google.com
port: 7276
secure socket: off
agps mode: control plane
"use wireless networks" in setting>location and security, was not selected
i ran several my tracks trying to recreate the situation described by Da_g where the gps position jumps around and locks are lost when mytracks is in the foreground and lbs in the background but is accurate in the opposite situation. i wanted to see if any "fix" would help this situation, be it a modem file or gps library from other rom but could not create the unstable situation observed by others. this bugged me because i have had serious trouble with google maps acting erratically while all my stationary tests come out fine. the problem is i never used the gps on this rom and did not know if it suffers from this problem in the first place.
it appears this rom does not have that particular problem or the problem is not predictable or can not be caused at will.
i ran a few my tracks with jm9 files. the results were mediocre at best, did it help? nope
did it hurt? maybe, not sure but probably not.
then i ran the test with jj4 files. did it help? maybe but probably not, tests did appear slightly better but were not free of imperfections
did it hurt? nope
on each test i ran one my tracks with mytracks in the forground and lbs in the background then another with lbs in the foreground and my tracks in the background.
observation: phone did not lose gps signal upon starting any app or switching to any app like others reported. tracking results were too close to call. i used similar routes with clear skys and the accuracy was similar when compared on the same road. with lbs up front i could watch the reported accuracy, it mostly jumped from 10 to 30m occasionally hitting 5, and spending more time at 10. average was about 15meter accuracy.
then for s's and g's i ran my tracks behind maps navigation to see if navigation would aggravate the bad behavior. well it didn't. perfect results! this is both reassuring and disapointing. while i can be a little more confident in my gps which in the past has been good except when using google navigation it also make me wonder if maybe the gps is just plain unstable and cant be predicted.
did samsung get it right in the base rom that eugene worked from? did using control plane fix it? did i just get lucky today with different results tomorrow? does touchwiz somehow cause the problems(not likely but who knows)? eugene did a pretty good job of removing touchwiz from samsung sources, not true aosp but it would fool most.
did i stumble on a unique combination thus fixing my gps? im sure the answer is no. it is either in the control plane settings with da_g's mods or in the rom itself.
the jl3 modem seems to get a slightly better signal but is certainly not a "fix"
will you have similar results? dont know, try it. but be warned that the rom is giving me some funny battery reporting and the standard recalibration isnt really working. i also had some random shutdowns when i used juice defender(maybe a bad install on the app) it also is not likely to work with samsung widgets and the video player wont play those weird media hub files.
i do believe that axura was built off the same base rom (im really not sure about this, just a hunch) but i had no luck with gps on that rom, i didnt use axura long enough to try fixing it but others report it as being very good.
i wonder if anyone has looked into available ram as a cause? eugenes rom seems to have a small memory footprint and i often have over 200mb free! could minfree be killing a service when ram runs low? could a setting in other roms be killing a service when exiting some gps apps for the sake of ram/battery usage?
im not a dev and would have no idea where to start on this. i also know that much files that control gps are proprietary and cant be fixed by the community, we can only hope to identify the problem and employ a workaround to prevent problematic situations assuming that the proprietary files are infact more or less functional. will samsung employ a fix? well i think with the number of identified problems with the gps that the galaxy s was released prematurely. samsung likely rushed the release to get a bunch of ooohs and ahhhhs without doing enough testing. it appears that they are incrementally improving gps performance over several builds and it may continue to get better, maybe over several updates. untill then ill use eugenes rom. i also think that if froyo builds did not help you then you may have an antenna issue!
ill attach the my tracks file when i have time.
i would like to thank clshortfuse and especially Da_G for there efforts. Da_G i hope you find a solution that we can all use regardless of rom, or maybe you can cook up a rom yourself, people would definately use it..