Database Info

[Q] Did v2.2 fix your GPS?

I was really hoping it would, but after installing Cognition v2.2 BETA5.5. my GPS is no better. I really miss this feature.
If others are having this fix theirs than I need to see about getting new hardware. If not, then ... I don't know.... Start shopping for another (not a Samsung) phone?

Phredeee said:
I was really hoping it would, but after installing Cognition v2.2 BETA5.5. my GPS is no better. I really miss this feature.
If others are having this fix theirs than I need to see about getting new hardware. If not, then ... I don't know.... Start shopping for another (not a Samsung) phone?
Click to expand...
Click to collapse
2.2 helped my GPS immensely though it was already decent before hand.
and not to be a PITA but the really shouldn't be in the dev forum, shoulda posted it in the Q&A one.

This belongs in general.
That aside, froyo is better than stock but not fixed.
Sent from my SAMSUNG-SGH-I897 using XDA App

cropythy said:
This belongs in general.
Click to expand...
Click to collapse
I put it here since froyo is not official yet. Thus a development topic.
Thanks for the response.

Phredeee said:
I put it here since froyo is not official yet. Thus a development topic.
Thanks for the response.
Click to expand...
Click to collapse
Google maps still can't get a fix very well, but its a software issue, my tracks shows that my gps has near perfect accuracy, sensor assist in settings does not work, it only makes the run on arrow, and driving through the woods worse.
Once you get a good fix in google maps you should then get fixes faster but the initial fix may take a while. Getting a fix with other software first seems to help, but may be coincidental.
Before you go trading in the phone make sure you do a clean install, master clear in odin one click, then odin flash jf6, then upgrade, either with odin or via clockwork mod recovery.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

Didn't really fix it for me. It takes a long time to get a fix and once I get it, it would lose the fix within a few seconds.
I'm not using a window mount so the GPS signal has to go through the roof of my car. That may or may not affect it.

Didn't fix it at all for me. Very frustrating.
-Can't get a lock while moving
-Can't get a lock inside
-When I do get a lock it will lose it If I start moving
-Accuracy is waaay off.

2.2 broke my GPS It pretty much worked fine before I updated... now I cant even get a lock!!!

Mine will lock fine if I'm not moving but will not work once I'm moving, so still no navigation. I've heard it works for some so I wonder if there are just alot of hardware issues or what

My advice to you guys is to learn how to tweak lbstestmode settings. You can make your gps a lot better or a lot worse with these settings. Read up on the best settings and apply them to your phone.
Sent from my SAMSUNG-SGH-I897 using XDA App

I gave up on my gps ... I am now "hoping" that the official release fixes it for everyone

update, i previously reported that it had more or less fixed my gps, that was with beta 4. beta 5.5 cant seem to get a fix, bad install im guessing. any number of things could be responsible. and no lbs test mode settings do not fix the gps. i almost wonder if it has something to do with titanium backup which i did not use before. its all purely speculation though.

Using Cognition Froyo 2.2 b5, GPS works almost 100% out of all the apps, google (Nav mostly)is the one with issues but very few now. It just looses me sometimes, usually when going under 20 mph but it does find me again in seconds.
I don't have a dash mount yet (due to questionable GPS) so it sits on the seat next to me in a truck, not the best. My trick is to run GPS test for a minute before I use Nav, seems to work every time. I lock on 7-10 sats in 6 or 7 seconds and they stay locked which never happened before, A lot of the time I'll be locked on 9 to 10 while moving with gps test reporting my speed within 1 mile an hour. I've also noticed that I get very few mistakes from Nav if I turn on the satellite layer, don't know why but works solidly for me when I do that.
This phone couldn't do a thing with gps before I flashed Cog's froyo and I had flashed a lot of different fixes, files, and roms almost bricking the phone a few times but nothing worked like the cognition froyo. I haven't used the jupiter v 006 files neither, no need with the gps working well.

GPS
I'm hoping that there was some parallel development going on and Samsung hasn't included a GPS fix in the leaked Froyo ROM. The GPS is pretty bad now - it's taking forever to obtain a fix again.

With 2.2, mine works fine. It takes a full minute to get a lock that status solid while in motion, but it gets a usable lock in twenty seconds. It's not as good as an iphone, but it's usable. In eclair, it's useless. Most of the time I can't get a lock at all, even if I let it try for a half hour. It will see 8 satellites and not lock a single one. In short, 2.2 has fixed my gps.

Mine has yet to have the GPS functioning well enough to use it.

No
........... 10 chars.

No, not at all.
My old ancient TMO G1 running Edge on ATT had lock on GPS 100% of the time. It was dead accurate and GPS was always on point. Can't say the same about my Captivate.
I'm on my second Captivate. I exchanged my first one thinking it was a hardware issue but alas I've given up. I flashed my phone with a couple different versions of ROMS (but not before trying the OTA Official fix before flashing any customs or rooting) it updated successfully but the GPS was still hella slow.
I'm not sure what's going on but these workarounds and everything absolutely do not work for me at all.
The only time the GPS works is when I turn Wi-Fi on, which defeats the purpose of having a wireless device in my opinion since you won't ALWAYS be around a Wi-Fi network (especially on a highway connected between the middle of nowhere) ...

I drove 450 miles with the GPS on my Captivate using Google Nav. It was pretty darn accurate. Only lost me 3 times the entire trip and by that I mean it went off onto the sideroads that ran parallel with the highway and then immediately came back. I'd have to say that 2.2 definitely fixed my GPS without a doubt.

I recently was having the crazy compass issue where it jumps back and forth. But my gps had always worked well as long as I wasn't moving to fast... I know I know. But cog 5.5 fixed my compass and improved my gps as well. Note I said improved not fixed, lol.
Sent from my SAMSUNG-SGH-I897 using XDA App

GPS finally works!

I just updated my google maps and all of the sudden my GPS works! Just went on a 25 mile ride and tutn by turn worked flawlessly with no hiccups and it locks in a mtter of seconds.
Sent from my SAMSUNG-SGH-I897 using XDA App

Confirmed
I was skeptical of your claim, we've heard this before, but dang, something IS different! I've put countless hours into the GPS issue, tried everything, and I'll be darned, the phone does something now that it never has before. Sitting in my same desk position as always, after a fresh reboot, Google maps locks incredibly quick, inside the house, where it never would before, never. Time to lock is probably somewhere in the 15 seconds with 4 out of 8 sats found. Inside! Something most certainly changed with this version of Google maps. I'm running stock ROM (JH7) and only GPS change was to use supl.google.com

I want to try this but I'm worried if by some chance out messes up ill be worse off. If I back it up using titanium she it doesn't work as well, titanium will restore it just as b4 right?
Sent from my SAMSUNG-SGH-I897 using XDA App

Well I was just exploring through the Market and noticed I had an update for google maps. So I updated it. As I type this, my phone is locking in a matter of 10-15 seconds inside my house. I posted a few times talking really bad about this phone a few times and was very disgusted . I dont know, it must have been software all along. And now after 4 months I am satisfied!

designgears said:
Thats funny, I just picked up copilot and gps is fine with it... maybe there is something something funky with how the gps works that google maps wasn't designed to handle...
Click to expand...
Click to collapse
I hope this is true.

I've noticed that with each google maps update, my GPS gets better, but then goes back to crap. Don't get too excited.
Edit: BTW... with wifi and GPS off, the phone has me in Germany. I'd hope that I'm using a cell tower closer than that.

UPDATED,still not working,such a cool phone,i love the movies and music,i love this phone,,just hoping the koreans wont forget the captivated,prisoners? damnit.we should BE getting ginger,they want to feed souryougurt,****YOU

My GPS worked well before. I saw this post and decided to try it, since I updated GMaps recently. And there IS a difference. It locked even faster and seemed to track movement better. I'm pleased.
Sent from my SAMSUNG-SGH-I897 using XDA App

I read this just a little while ago and updated mine. It certainly locks much faster with stock settings for gps. I locked on here at work under 30 seconds next to a 21 story building...something it would never do before.I'll try it out and see how it tracks tomorrow while driving around.
Mac

Come back here in 3-5 days and tell us it still works. Every single fix to date stops working after a period of time. I strongly suspect it's an issue of the cached GPS Sat positions going out of date. Every time I clear the data in libtstmode, I get a better working GPS.

Read the OP and searched for an update. Low and behold, there it was. I had GPS lock within 15 seconds at 35mph driving through town. We'll see if it keeps up; I was among the worst in terms of GPS performance.

With WiFi and aGPS on, GMaps always used to put me about 5 miles away when I was in my house, now it puts me close to my actual position (less that 100 ft away, but within the circle of ambiguity), so the new version is definitely better.
Not that this has anything to do with the slow lock for the actual GPS . . .

settings
what are you using for Supl/CP Settings
and Applcation settings?

I'm using all the default settings except I have Skyhook on.

This is definitely better. GMaps puts me almost spot on inside my house. However, whatever they are doing may be smoke and mirrors because I still have the same GPS issues with applications like MyTracks and GPS Status (major inaccuracy and drifting).

When you all are getting locks indoors, do you have 'Use wireless networks' turned on or off in the Location and Security settings?

I have AGPS off.

GPS still sucks for me with new maps update. No lock at all after waiting like 10 min
Sent from my SAMSUNG-SGH-I897

hopefully this is hte answer we are looking for!

SiL3nTKiLL said:
hopefully this is hte answer we are looking for!
Click to expand...
Click to collapse
Its not. You've only changed the front end interface.
Sent from my SAMSUNG-SGH-I897 using XDA App

Will GPS ever work like it should

Iv had this phone since the day it came out... this phone is awesome in every aspect expect GPS... I had the blackberry bold 9000 and that had an excellent GPS never gave me any issues I'm really thinking of trading my captivate for a torch 9800 ... what I want to know it that is there any hope for this GPS? And when should. We expect it

In a word No. This really seems like a hardware issue. otherwise this would have been taken care of in the subsequent updates. Cappy is a great device but the gps is very hit or miss. Line of sight is very important if that is lost gps loses fix. It seems like a hardware issue no matter what software fix or setting you can use.

No
Sent from my SAMSUNG-SGH-I897 using XDA App

Am I the only one that believes it will with froyo? I'm not giving up!
Sent from my SAMSUNG-SGH-I897 using XDA App

If you guys really want your gps to work there are a couple ways I have found to improve it greatly. This is as close to a fix as i can find out there, and I am somewhat happy with my gps now. I say somewhat because it really should have been totally fixed by now. I am running a i9000 rom with my lbstestmode setting stock except accuracy set to 250 which IMO only makes it lock faster and doesn't affect accuracy. I can usually get a lock accurate to 10-15 m in about 5 sec outside. Navigation tracks well I usually only have one or two hiccups on a 30 mile trip. I have been running this set up for about a month and a half so I am pretty sure it will stick. And btw my gps never got a lock stock no matter what I did if I wasn't using wireless networks. Hope this helps.
Sent from my SAMSUNG-SGH-I897 using XDA App

I don't think its a hardware issue. I am in Canada and the GPs has been working pretty much flawlessly on the Rogers Captivate. You can see other threads and everyone who has had a Rogers Captivate and flashed other ROMS (ie. AT&T) has noted that their GPS turned to crap.
I have had this phone for a month and the GPS has been stable and I get an accurate reading down to (5-10m) in 10 seconds or so.

I believe that it is a driver issue and how it tries to communicate with the software on our phones. Sure each ROM means different software settings, which I think helps tweak the software to work a bit better with the driver, but until they fix the communication between the broadcom chip and Samsung's (or AT&T) software, it won't work like it is supposed to. Samsung so far has only tried to fix it in their software, not the driver.
This explanation also helps explain why some GPS's are better than others. No two phones have the exact same files and settings, even from stock, which can explain variance of GPS.
However, hasn't anyone else noticed that the more we move away from Samsung/AT&T software on our phones and unlock it, the better the GPS seems to get, little by little? I believe there will be no solution from Samsung, but it will just appear in the Dev section here one day, when one person stumbles upon the real communication culprit when messing around on their system.

On perception build three rom. Did juniper fix. I get a lock in under 10 seconds even with heavy cloud cover. Tracks very well too. It can be fixed. But you have to bee willing to mess around a bit.
Sent from my SAMSUNG-SGH-I897 using XDA App

I'm with the OP. I love every single aspect of my phone except the GPS. I LOVE google maps and location based services on the phone. But having them all be crippled is a daily annoyance for me. One person mentioned that the Rogers Captivate works well. Has anyone tried loading a Rogers rom on an AT&T phone?
We all know that GPS issues have affected every initial launch variant of the Galaxy S phones. Is there any version of the phone out there that has gotten an update that fixed the GPS issue for EVERYONE, including TRACKING? If there is, we should be looking into that rom for a fix. If there isn't, I'd say we should be very concerend that a fix will never come.

The GPS will never ever work.

Really too bad for those out there that have GPS not working as expected...I wouldn't be happy either, but since I chgd the supl server to google I've had no problems obtaining a lock-accurate as well..

gmanunited said:
In a word No. This really seems like a hardware issue. otherwise this would have been taken care of in the subsequent updates.
Click to expand...
Click to collapse
lol
You're making the giant false assumption that Samsung cares about updating.
mcord11758 said:
juniper
Click to expand...
Click to collapse
It's JUPITER, as in, the planet. I tend not to nitpick spelling or grammar but in this case it's really annoying as the first time I heard about this fix I wasted some time searching in vain for JUNIPER (which is a genus of plant), which produces no helpful hits.

I was a non-believer.... The best I ever got was on Stock JH7...
But My GPS is perfect and locks in under 3 seconds on google navigation and tracks perfectly with the Axura Rom.
Last one i tried beta4 worked perfectly. Gonna flash beta5 in the morning and test that out with a long drive tomorrow.
With Axura I have officially left eclair 2.1 in the dust and won't go back due to the over sophistication of Axura. I give it a week or two before it is clearly the most used rom on the Galaxy S line.

I will take a video of my gps and google nav with my wifes blackberry 9700 running os6.
I know my post is unbelievable.. just wait for the video footage.

Krad said:
I will take a video of my gps and google nav with my wifes blackberry 9700 running os6.
I know my post is unbelievable.. just wait for the video footage.
Click to expand...
Click to collapse
Anything that incorporates the Jupiter v006 files seems to have significantly improved GPS, including Axura (I'm not 100% sure it uses the Jupiter v006 files but it sure seems like it) and Perception.
I haven't really read of anyone having significant GPS problems once they have any ROM with the Jupiter v006 tweaks or applied it manually themselves, but we'll see as time goes on.

A couple days ago I was in Perception snooping around, and found a GPS settings file in the system that had different settings than in the Jupiter006 file. The Jupiter file was in there, but this file was named something different and a different location, and it used a different supl. I was looking for something else at the time, so I mentally noted it to go back and check it out for testing, but I can't find it now, I looked for it for an hour today. :/

Hmmm..... The GPS locking on is not the problem i get locks with in seconds , what is the problem is accuracy, the gps works NEARLY flawless in locking and accuracy when on a highway or interstate but when driving in the city were streets are close to each other my location jumps around like crazy, im using AXURA beta 5 and ive tried supl.google.com with no luck thanks for all your help everyone, ill look up the Jupiter fix and see if it helps ....I'm not to good with any tweaking other then flashing and lag fix's so if someone can lead me to a tutorial on the Jupiter fix that would really help

JPS81 said:
Anything that incorporates the Jupiter v006 files seems to have significantly improved GPS, including Axura (I'm not 100% sure it uses the Jupiter v006 files but it sure seems like it) and Perception.
I haven't really read of anyone having significant GPS problems once they have any ROM with the Jupiter v006 tweaks or applied it manually themselves, but we'll see as time goes on.
Click to expand...
Click to collapse
with perception 4 i had my worst gps problems. I have had good lock times with just about ever rom including stock but with perception 4 i had difficulty acquiring locks period.
Tracking is a bigger issue. I don't believe the gps will ever track perfectly or even close to the performance that it should. Someone claimed their device tracks perfectly with auxura which i haven't tried but will....but again i am skeptical and would be curious exactly how much real-time driving navigation they have tested.
Anytime someone brings up the notion of this being at least partially a hardware issue people say that it just speculation. Asserting that it isn't is no less speculation.
With some of the beastly devices coming (as soon as january...im looking at your terminator aka olympus) not address the serious gps flaw is not good business. So i believe if it could be fixed with firmware it would have been and you wouldn't hear them use words like OPTIMIZE instead of fix/repair. Am i the only one the thinks it seems they realized they can't fix it and are just trying to hold on and sell as many as they can (several places had them free with 2year contract yesterday and this weekend) before the next serious contender hits.
I really don't care for IOS but mapquest + wife's iphone 4 is a good example of how the gps on a phone can and should function in regard to locks and excellent tracking.

Krad said:
I will take a video of my gps and google nav with my wifes blackberry 9700 running os6.
I know my post is unbelievable.. just wait for the video footage.
Click to expand...
Click to collapse
would love to see this. please make sure to use a route with plenty of turns..and some portion of city navigation. I am skeptical that it will track you through every turn as a gps should. Straight line tracking isn't using a problem except for the occasional lag. The tracking problem is it has a serious issue being able to track you accurately enough to know when you had turned 50% or more of the time.
UPDATE
just flashed axura 5 so will give it a brief nav test shortly.
The aesthetics of the settings menu is very nice in this build. I wish they would give up on 3d app drawer though UGLY and SLOW.
Haven't had much time to play with it yet but will report back.

limited testing but might have to eat crow.
FRESH FLASH of AXURA 5
only a 10 mile drive but did incorporated 12-15 turns.
Lock time and accuracy when stationary was great.
Best tracking and turn by turn navigation i have had yet.
Only missed one turn and it corrected itself to actual location much quicker (before when i would turn nav would continue through the intersection and start giving verbal reroutes thinking i was on a different street and then when it would finally think it had correctly re-rerouted it would actually be running parellel to me 1 or 2 blocks off).
Taking this with a grain of salt further testing necessary as i have had promising results with fresh flashed roms before only to have them quickly go to crap within a few days testing. But this is one of the more promising so i will be staying with Axura for now.
The only gps issue that really stood out was a little bit of a lag after you had been completely stationary. Slight Lag pinpointing me on road after i pulled out of driveway and same thing when leaving grocery store parking lot.
PS - are you using the stock gps settings that came with the flash or did you modify anything.

GPS problems thread

I know this has been discussed some, but i can't seem to find a solution. This is a great phone, but the gps really makes me mad.
My OG Droid and inc would get a position lock pretty fast. about 15 seconds. the thunderbolt on the other hand sucks... Never have i even seen before the shrinking (or sometimes not) circle around your position arrow in google maps.
This is a big deal to me because i use the gps as the main navi in my truck, i assume lots of others do too. I also use it for marking fishing spots so pinpoint accuracy is a must.
I know and for those who don't, you can download GPS status and see the fix its getting and also reset or update your GPS. This kind of works for a while, but still doesn't get the most accurate fix (but ok for driving) and is a PITA. Also takes a minute.
I have a feeling this is software/radio related, and hopefully can be fixed. But just a hunch as i know nothing about the matter.
Anyone have any other ideas??

I should add i just got 12/12 in gps status. not too bad. and maybe the circle around the position arrow was MAYBE just added in a new version of maps. but still it takes multiple trys when i hit navigate to find my position.

GPS is awful on both my and my wife's Thunderbolts too. Can't get a lock standing outside even after 5 minutes; completely unusable. And, we shouldn't have to download another (non-official) app just to get GPS to work.

Glad it's not just me. My GPS takes forever to lock (has taken up to 10min before).

ntguru said:
Glad it's not just me. My GPS takes forever to lock (has taken up to 10min before).
Click to expand...
Click to collapse
my pgs sucks as well. I didn't use it much before rooting and flashing roms, so I can't really compare pre and post ROM flashing. Either way, it sucks, can't lock on my location, it get "waiting on location" then "location unavailbale at this time". However, it seems to work when I on pgs navigation after waiting for a while. Hopefully we can get a fix for this soon.

i didnt try GPS much before root either. Don't think that would make a difference. I was on the stock rom just until yesterday and was having the same problems with it.
BUMP

I'm having the same issues. I love my phone but this is very aggravating. I would like to know if this is just isolated to a few of us( ie our particular phones are defective) or is the a phone wide issue.
Sent from my ADR6400L using XDA App

GPS issues..
I've been having the same issues with GPS. I posted about this in another thread but i'll post again.
I get three different locations from three different apps using GPS. Google maps is off by a few blocks, but at least it shows me in downtown houston (my actual location). My time widget pulls the time based on location, and currently, its somewhere near a lake in Russia right above mongolia. Foursquare thinks i'm on the coast of Lithuania and gives me locations in that area to check into.
I called VZ tech help and breezed through to the L2 support. The lady put me on hold to grab a thunderbolt phone to help me troubleshoot. When she came back on the line, she said her google maps was showing her location as blocks away from where she really too!!
Long story short - she gave me a call back later that day and said HTC is aware of the problem and is currently working on a fix for the issue , but gave no timeframe for when it would be fixed

My thunderbolt is fine. Just did a maps test and it found me in about 10s. I have two thunderbolts and the other one took about 1 minute to lock. Both tests were done from inside my house.

having the same problem with my gps...im going head to a verizon store today!

magnafides said:
GPS is awful on both my and my wife's Thunderbolts too. Can't get a lock standing outside even after 5 minutes; completely unusable. And, we shouldn't have to download another (non-official) app just to get GPS to work.
Click to expand...
Click to collapse
"non official"
you shouldn't be on this forum, if you don't like "non official" stuff, btw if you use GPS status you can clear the cache, and download the assistance data. maybe that'll help you guys

Mine gets a lock indoors, away from all windows, under 2 minutes. Not the most accurate, 60ft, 6 satellites. But hey I'm in the frikkin house. Outdoors I get a lock instantly. 12+ satellites.

Gps status helps, but doesn't fix it. So chill dude.
But I just downloaded das bamf 1.3.1 and now its working like normal! In the change log it says edited some gps settings in the build prop!
Sent from my ADR6400L using XDA App

Damn my gps doesn't work at all...
Das bamf 1.3.1

Varelse said:
Damn my gps doesn't work at all...
Das bamf 1.3.1
Click to expand...
Click to collapse
Sucks. I assume you tried updating thru gps status? Maybe it will work after awhile or a reboot.
Anyways since mine works good now I am at ease cause I know its not HW. I'm sure there will be a patch one of these days.
Sent from my ADR6400L using XDA App

I am using Das Bamf 1.3.1 and have no gps problems

Running Das BAMF 1.3.2. No problems at all with GPS, indoors, outdoors, or in car -- pre- and- post-root.

headcheese said:
Sucks. I assume you tried updating thru gps status?
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
Dumb question, but where do I find this option?

So it's just not me, mine takes minutes to lock on, after that it's no problem, but that initial lock is a PITA, 3-5 min...

I've also noticed subpar gps performance compared to my incredible from the first day I got the phone.
The Gps status app seems to have helped and the time to get a lock has improved even more with bamf 1.3.2. Even still it doesn't seem to get a lock as quick as I was used to with my incredible. Takes anywhere from 30s to 2min, but on the lower end of that.
Would still like to see this addressed by HTC/vzw. I'm sure there's other people out there having this issue and I know they can do better.

The real cause of nonworking gps!

so this is my 3rd G2X, my first was a horrible rebooter so i exchanged it for a second, which was pretty good but i could never get the GPS to work. so i just got my 3rd g2x sent to me, and everything was working, including GPS. Then i downloaded GPS status and toolbox. when i opened the app it told me GPS assistance downloaded, and from then on my GPS won't work. i tried a factory reset and it is still broken, so i think i have found the cause of the problem. Anyone agree?
also is there a fix, or do i need to get a 4th g2x sent to me?

I have GPS status on my G2X and my GPS works perfect.

slowpig38 said:
so this is my 3rd G2X, my first was a horrible rebooter so i exchanged it for a second, which was pretty good but i could never get the GPS to work. so i just got my 3rd g2x sent to me, and everything was working, including GPS. Then i downloaded GPS status and toolbox. when i opened the app it told me GPS assistance downloaded, and from then on my GPS won't work. i tried a factory reset and it is still broken, so i think i have found the cause of the problem. Anyone agree?
also is there a fix, or do i need to get a 4th g2x sent to me?
Click to expand...
Click to collapse
You, sir, should work as a journalist. What a wonderfully sensationalist headline!
'This is the absolute truth!! I think...'
Why would an app that a lot of us don't use be the cause of such a widespread problem?

Man, there is no need to be rude. He is just trying to figure out what is going on with his gps.
Slowpig, I highly doubt it's the program making the gps nonfunctional. You have several options though. You could try rooting and flash EaglesBlood (froyo) and see what that does. I like it a lot better than the stock, and everything works just fine. Also, try searching before you post, as there about a million gps fix threads. Here are a few I found doing a quick search....
http://forum.xda-developers.com/showthread.php?t=1092016&highlight=gps+fix
http://forum.xda-developers.com/showthread.php?t=1079304&highlight=gps+fix
http://forum.xda-developers.com/showthread.php?t=1085664&highlight=gps+fix
http://forum.xda-developers.com/showthread.php?t=1078750&highlight=gps+fix
http://forum.xda-developers.com/showthread.php?t=1049370&highlight=gps+fix
Anyway, do some reading, and see what you come up with. Again, I'd give a new rom a shot and see what that does for you. Hope this helps.

before you guys go off calling me retarded, know that this is my 3rd g2x and my second one ahd a faulty gps, and i tried all of the fixes on the forum to fix it. when i aquired my new one it worked out of the box, but after the instalation of the app in question it stopped. when i went into the hidden menu and deleted all aiding data it worked perfectly again. see why i might be led to my conclusion? it mightve been a bit rushed, but i was very upset that my brand new G2X's gps had suddenly stopped working after only an hour of use.

slowpig38 said:
before you guys go off calling me retarded, know that this is my 3rd g2x and my second one ahd a faulty gps, and i tried all of the fixes on the forum to fix it. when i aquired my new one it worked out of the box, but after the instalation of the app in question it stopped. when i went into the hidden menu and deleted all aiding data it worked perfectly again. see why i might be led to my conclusion? it mightve been a bit rushed, but i was very upset that my brand new G2X's gps had suddenly stopped working after only an hour of use.
Click to expand...
Click to collapse
If that is the reason then can you explain why I have those apps on my G2X and the GPS still works better than any other GPS I've ever used?

It seems its just random, some g2xs have problems while others don't. Its just poor QC by LG
Sent from my LG-P999 using XDA Premium App

I finally got around to try the gps. Maps, earth, gps status all work fine, except for the speedometer apps.

Are you not getting a lock at all, or is it just taking FOREVER to get a lock. There was a fix I flashed for mine (mine took forever to lock), and now mine locks almost instantly! I'll try to see if I can search and find the thread, but the thread had different files to flash with cwr and each had it's own region. (ie south east, west coast, etc).

Mine works now. I just had to do a factory reset
Sent from my LG-P999 using XDA Premium App

Mine finds satellites but takes forever to lock. Even on stock ROM with a factory reset.
Like n 1-2 seconds it find 6 satellites, but lock takes 10 to 20 minutes at least.

ce3jay said:
I finally got around to try the gps. Maps, earth, gps status all work fine, except for the speedometer apps.
Click to expand...
Click to collapse
I have the same problem with speedometer apps!
It acts like it only wants to display speed in increments instead of the actual speed.

strung said:
Mine finds satellites but takes forever to lock. Even on stock ROM with a factory reset.
Like n 1-2 seconds it find 6 satellites, but lock takes 10 to 20 minutes at least.
Click to expand...
Click to collapse
Mine was taking a long time until I flashed this fix. Give it a shot, it worked for me. I get locks in a few seconds. Here is the link...
http://forum.xda-developers.com/showthread.php?t=1085354
Hope this helps!

This is my third G2X and all have had gps issues. Currently I applied the download fix (southeast region fix) last night and I saw an immediate transformation. Very quick locks and much improved accuracy.Unfortunately this morning I am back to either no locks or locks after 30 seconds to 5 minutes and the accuracy is horrible. Right now where last night I got almost instantaneous locks and 16 to 39 ft accuracy I am getting very very slow locks and 37209 ft accuracy. I was elated last night but now I am as confused as ever. I have tried every gps fix I can get my hands on and I am right back where I started.

Mine works pretty well. Glad a factory reset fixed your problems.

slowpig38 said:
It seems its just random, some g2xs have problems while others don't. Its just poor QC by LG
Sent from my LG-P999 using XDA Premium App
Click to expand...
Click to collapse
Agreed!
I love my android phone but coming from an Iphone 3gs to a vibrant to a g2x. The phone(s) on paper are Superior to Iphone (specs are amazing and way faster) But apples qc is far superior to lgs and sammys I hate waiting over 7 months for an os upgrade so they can bloat it up with crap, What I hate even more is when you spend your hard earned cash on a phone that looks amazing, and a standard feature (GPS) don't work. Despite apples ass raping when it comes to hardware and its lack of software features(android is an will always be king) They put out solid phones (other than that iPhone 4 antennagate crap). Androids strength and most detrimental weakness is its partners. Google Does not get that if a person is disappointed over and over they will jump ship! This is my second disappointment after my vibrant (GPS not working correctly). But i'm quick to forgive, others are not... If I were a regular customer and not a geek who loves tech and i switched from Ios (iphone) to android (vibrant, G2x) and had all these issues screen bleed, gps,freezing etc. id switch back after the first week, and androids image would be tarnished.