I currently have the last temasek cm11 build on my phone. GPS works fine. No problem at all. If I switch ROMs and restore my data, GPS still works fine.
However, the GPS will NOT work AT ALL on *any* other ROM I try. Whether it's AOSP cm11 or cm12. Whether it's a samsung build. Whether it's a stock samsung build. GPS will NOT lock. I run GPS Status apps and it just sits trying to get a lock, forever. Nothing.
Flash back my current ROM. BOOM. GPS Works fine.
IF I flash another AOSP build and DON'T wipe data/cache/etc.. GPS will still work fine. It only breaks when I do a clean install.
So, wtf? What could possibly be on my /data that is keeping my GPS working, and some how not even touchwiz ROMs also contain? It's an 900T, and currently on AOSP, so the codes I see floating around don't work. Granted, I could flash a touchwiz ROM and try them again, but right now GPS is working as long as I'm on one ROM, I'm afraid to use the code and completely break GPS. It just doesn't seem to be something at that deep of a level as flashing back to my current ROM always fixes it. Which tells me it's some simple config that I need.
Anyone know what the heck could be causing the problem? My cm11 build is sooo dirty from xposed and massive tweaking that bluetooth and other things lock up daily, so I really want to run another ROM or at least do a clean install, but I can't lose my GPS. It's used daily.
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I just installed ParanoidAndroid, latest build and latest gapps after a clean flash. I've only used stock up until now but figured I'd give it a shot (although I've done plenty of ROM installation, etc. on my last phone).
Everything works great except GPS; I can't get a fix at all. I tried getting assistance data with GPS Status, tried rebooting, no luck. It just keeps waiting for a fix. Any idea what's wrong?
So I have a question about the GPS on the G2. I installed cyanogenmod immediately after opening my G2. I did not realize you needed to get a GPS lock with the stock ROM first, so my GPS has not worked since I've had the phone. From what I can find the only fix I see is to roll back to stock, get a lock, and then restore my current ROM.
I currently have the latest CM11 nightly and the latest clockwork mod recovery. I don't mind backing up my current install, flashing another ROM, getting a GPS lock and then restoring, but I can't seem to find an easy way to do this. I don't see a stock ROM that I can just flash in recovery, which i'd really like to do if possible since I'm not going to keep the stock ROM for more than a couple of minutes. Some have recommended cleanrom 1.0, which I tried but after wiping data and cache only resulted in a black screen and wouldn't actually boot.
So does anyone know if there is an easy fix for the GPS that I haven't found when you have never had a lock on a stock ROM, and if not, is there a simple ROM I could flash to get this fixed up quick? Thanks for any help
sublimejhn said:
So I have a question about the GPS on the G2. I installed cyanogenmod immediately after opening my G2. I did not realize you needed to get a GPS lock with the stock ROM first, so my GPS has not worked since I've had the phone..../QUOTE]
I never heard of something like this. Can you please show me where you found this info? (for me this looks like a busted GPS, or Cyanogenmod GPS problem, have your checked their thread for help and info?)
Sorry that I won't help you much. But I am really interested in that part that you need to get a lock first with a stock rom.
Btw for ppl to help you with ROM's you could also share your exact device variant.
Also not sure what you mean by cleanrom being stock? Everything that is other as the KDZ files or OTA from LG are not stock. There are guides how to go to stock. But flashing something in recovery classifies as going custom. Are you sure that would fix your GPS problem?
Click to expand...
Click to collapse
I never had to use my GPS til now and found out it cant lock on to any GPS sat. Ive had no other issuses with this phone
This is all the things ive done. I've enable TMO AWS since day one. I'm a TMO user that was a given.
My phone had the old orginal baseband, i think its MDC, then i upgraded to MDL and now i'm on the new NB1.
Ive bounced around all KK roms and even some older roms i still had saved. Nothing can get a GPS lock. I'm leaning now towards something physical, but Google now works and they can trianglulate via cell towers.
Ive 99% sure ive enable all GPS items. Location settings are on high accuracy.
Ive been using GPS status apps to help get a better location and nothing seems to be working.
Does playing around with Kernals help? I never installed one before or played with any of those. I need GPS to be working now so if i cant figure it out soon, i might just jump ship to the nexus/s5/iphone
bump up. Anyone have suggestions?
ive tried many different roms, Touchwiz and not touch. All diffrent basebands. I dont know what kernal work with what roms so ive been avoiding that
A kernel is not going to help. Have you gone back to stock rom and still have the issue? It sounds more like it's a hardware issue. Like the gps antenna is not working.
sadly i'm thinking the same thing. It looks like a cheap part but no idea on taking it apart just yet.
I always thought a kernal acted like a driver for computers,
turtle* said:
sadly i'm thinking the same thing. It looks like a cheap part but no idea on taking it apart just yet.
I always thought a kernal acted like a driver for computers,
Click to expand...
Click to collapse
The kernel is the boot image and in essence it interprets between the software and hardware. If you've flashed other roms you've flashed a kernel each time.
jd1639 said:
The kernel is the boot image and in essence it interprets between the software and hardware. If you've flashed other roms you've flashed a kernel each time.
Click to expand...
Click to collapse
ah, understood. I thought it was like the baseband where i had to manual change it.
Does anyone know where the GPS antenna is located at? Is it a part i can swap out or attached the main board. I just pulled apart the phone looking for obvious parts not being connected and everything looked good.
Ebay listings GPS antenna as the 3g blue cable that runs down the side of the battery. I dont think thats the GPS antenna but it does cost a small amount but i dont think that will help.
before you tear it apart try what jd suggested and odin back to stock. you may want to backup and format your internal and ext sdcards also. they can harbor old junk that may effect new roms.
also, are you wiping all including system before flashing and on your phone and some roms i believe you have to odin a modem.bin file as part of flashing. am not familiar with that stuff as i am i337 and never used odin. "yet"
not sure if any of it will help--but--
good luck
Might need more info on what our suggesting.
I'm wiping data and the option under data in clockworksmod.
I don't have anything important, everything is cloud.
Sent from my GT-I9505G using Tapatalk
I think he is suggesting that first you get the STOCK MDL Odin package and flash it. Then wipe all data, dalvich cache, and internal sdcard (remove your external sdcard before hand). Then power it up and IMMEDIATELY turn OFF WiFi, you do NOT want it to try to update on its own. Now check GPS and see if it works.
If it does work now (the FIRST LOCK can take a bit of time) Then again use casual+motochopper to root and install twrp. Then flash a good ROM. Once that is done you can check GPS again and make sure it works, it may take a bit since it will be the first lock again (I always had trouble with MK2 modem for some reason. All the rest worked perfectly).
Or just make sure you have the ROM you want to run on a external sdcard. Then remove it for safe keeping. Now go into twrp/clockworkmod and wipe data factory reset/ cache/ dalvich cache/ and sdcard. Power off the phone after it is done and reinsert your external sdcard. Do not boot up but go directly to where you have the ROM at on your external sdcard CIA twrp/clockworkmod and flash the ROM. This will give you a perfectly clean slate. Now once it is done and booted up let it sit without touching it for at least 5 minutes. Then check GPS. If it works you are good to go. Then download any of your apps from the play store (not from titanium backup in case some system setting are being reinstalled with something). Once you have your apps back check GPS again to make sure one of them hasn't caused an issue with your GPS. If all is still good use titanium backup to recover your DATA ONLY for the installed apps.
Sent From My Spiderman,Ironman,Red,Dark Blue,Green, GreyedOut BadAss Themed I337
I have no idea why
I had the same problem, and I just fixed it too.. I don't know if this will cause the problem but here it goes.
I found this solution from the forum, but forgot where..
1) I installed the rom (AOSP) I wanted and checked if gps worked (but didnt work, checked with GPS Status)
2) Went to recovery, nandroid the Rom
3) Clean install to Rom that GPS worked (TW Rom) and again checked if gps worked (and worked, also checked with GPS Status)
4) While leaving the GPS toggle on, went into recovery, and without wiping anything, restored the AOSP rom
5) booted checked GPS Status and I was able to see the satellites..
I have no idea right now if this will cause any trouble.. but at least gps works in aosp..
I'll update again if I face any problems
Good luck
Its working now. Not 100% sure what the problem was but that's for everyone with the suggestions.
I flashed about 15-20 different Roms from touchwiz to aosp and miui thing.
Opened the phone up and looked for basic things not connected.
Removed my case and wireless charger insert.
Did the MDB Odin flash. With stock ROM. It didn't still didn't work.
Finally gave up and flashed back old GE ROM. And all of a sudden it works.
I think the Odin wipe and SD card wipe had a big role but not sure. Either way it works now. Might not be the fastest connection to GPS as it takes a few moments now but it works. I'm normally locked on to 13/21 SATs out there in a matter of 2-3 mins.
Now that it works I'm a little weary of trying MDL
Sent from my GT-I9505G using Tapatalk
OK guys I've completely given up.... I've completely bricked one phone and keep soft bricking another and have a third laying around, and I just can't figure it out.
I have a G2. The GPS works in stock 4.2.2 (Tested in GPS status and toolbox app) then I root and flash a new 4.4.2 ROM (tried Malladus and Mahdi) and bam the GPS doesn't work anymore.
When I revert back to stock (through lg flash tool) it works again. HOWEVER, if I just flash the stock 4.4.2 LG ROM GPS works once agai.
Do you guys have any clue wtf is up? I can't figure it out... I've tried changing the GPS config, the drivers, every tool in GPS toolbox. Tried GPS test and I just get nothing. Is there something completely obvious that I'm missing here?
I've also tried the trick where I backup my custom ROM, revert to stock and get GPS lock then restore my custom ROM. doesn't work.
thanks!
mburdzy said:
OK guys I've completely given up.... I've completely bricked one phone and keep soft bricking another and have a third laying around, and I just can't figure it out.
I have a G2. The GPS works in stock 4.2.2 (Tested in GPS status and toolbox app) then I root and flash a new 4.4.2 ROM (tried Malladus and Mahdi) and bam the GPS doesn't work anymore.
When I revert back to stock (through lg flash tool) it works again. HOWEVER, if I just flash the stock 4.4.2 LG ROM GPS works once agai.
Do you guys have any clue wtf is up? I can't figure it out... I've tried changing the GPS config, the drivers, every tool in GPS toolbox. Tried GPS test and I just get nothing. Is there something completely obvious that I'm missing here?
I've also tried the trick where I backup my custom ROM, revert to stock and get GPS lock then restore my custom ROM. doesn't work.
thanks!
Click to expand...
Click to collapse
Try getting a GPS lock on stock using GPS test. Then go into maps and verify the lock is OK. Let it sit in maps for a couple minutes. Don't press the back key, just use the home key and reboot into recovery and flash your ROM.
If that doesn't work, get a lock in stock using the same method and when flashing your ROM don't wipe /system. I know it sounds weird but I had that happen a few times with me and not wiping system allowed me to get a lock on the custom ROM.
Let me know how it goes.
simon_lefisch said:
Try getting a GPS lock on stock using GPS test. Then go into maps and verify the lock is OK. Let it sit in maps for a couple minutes. Don't press the back key, just use the home key and reboot into recovery and flash your ROM.
If that doesn't work, get a lock in stock using the same method and when flashing your ROM don't wipe /system. I know it sounds weird but I had that happen a few times with me and not wiping system allowed me to get a lock on the custom ROM.
Let me know how it goes.
Click to expand...
Click to collapse
Ok I was able to fix it!
But in a completely random way.
I'll try to describe it in as much detail as I can so anyone who follows will not spend as much time as I did.
First: The problem. (This only happened in custom ROM)
In stock, my GPS worked fine, no problems and I got good lock and everything.
In custom ROM's, however:
My problem wasn't just that I couldn't lock on to satellites, I wasn't able to even see any satellites.
In GPS Test I wasn't seeing any satellites. In GPS Status and Toolbox in the middle right where it says fix/sat my phone was displaying -/-
I tried everything there was, from downloading GPS states to changing my gps.conf file to basically everything I could find online, and nothing worked.
Yet everytime I went back to a stock ROM, it worked perfectly 0.o.
Fix:
Today I gave it one last shot.
I'll try to describe everything I did down to the letter in case any of it makes a difference
I ran LG flash tool, let the phone turn on, but DID NOT activate.
Then I ran LG flash tool again, and let it activate and do it's thing.
From this point on I ran GPS status and toolbox, and I was both seeing satellites and locking on.
Then I turned on Maps (as suggested) and let it lock in on my position and sit there for a few minutes.
I ran ioroot and rooted.
Then installed TWRP.
I then intended to flash to TWRP 2.7.1.0 but somehow flashed 2.7.0.0, and didn't bother changing it. (I don't recommend doing this as it could cause problems.... I was just too frustrated to change)
I backed-up EVERYTHING.
Then I downloaded and saved onto my phone Malladus, Gapps, and the 11a-24-twrp.zip file that was needed.
I flashed it, and BAM it worked.
I turned it on, activated and immediately ran GPS status and toolbox and it worked right away.
Before if I flashed I would just get -/- in GPS status and toolbox, but now I find satellites and lock quickly.
Good luck to anyone who has this problem!
Try following my steps, they may just work.
And thank you for the help!
Hi all,
I have a GT-I9505, running stock ROM I9505XXUGNG8 (KitKat 4.4.2), and I can NOT get the GPS to work. I've used GPS tester programs "GPS Test" and "GPS Status" and what I see is that the phone sees anywhere from 12-20 satellites, but does not get a fix on any of them. Once in a blue moon I'll get 1 or two to lock. I am outside or in the car when I use the tester programs, so no interference from buildings.
It is rooted, has busybox and CWM recovery on it. It does not have Yahoo Weather (just the weather app that came with the phone). I don't know if it is hardware or software at this point. It does seem to have the lovely Knox bootloader. (SE for Android status - Enforcing)
*#1234# tells me:
AP: I9505XXUGNG8
CP: I9505XXUGNG8
CSC: I9505OXAGNG8 (but I use the phone in Israel).
I've been trying to find a case that is similar to mine, but I haven't found one yet. Can anyone help me out here? I was going to re-flash the modem part of GNG8 just to see if that would help, Maybe going to CyanogenMod or reflashing the stock would help? What about GNH8? The I9505 is not sold in Israel at this time, so I have not found any Israel-specific ROM/CSCs for it. I don't know if the CSC for the I9500 (which is sold here) would help or hurt.
There are a lot of things I can think of to waste my time with, but I'm hoping some of the smart people in this forum will be able to help make it a shorter process.
Mate I've had this problem since I flashed |ROM|★GE★|►VJUGNH2◄|►41◄|.
I've tried CM11, I've tried stock for my area (UK)
I9505XXUGNG8_I9505BTUGNG2_I9505XXUGNG8_HOME.tar (stock ROM)
BL_I9505XXUGNG8_user_low_ship_MULTI_CERT (stock bootloader)
GSM_Modem_XXUGNG8_and_LTE_Modem_XXUGNG8.tar (stock LTE modem)
and to no avail. I keep having GPS lock issues. I did flash Adams Kernal when flashing the GE and CM11 ROMS. But surely flahsing stock everything should fix the bloody GPS
artnada said:
Mate I've had this problem since I flashed |ROM|★GE★|►VJUGNH2◄|►41◄|.
I've tried CM11, I've tried stock for my area (UK)
I9505XXUGNG8_I9505BTUGNG2_I9505XXUGNG8_HOME.tar (stock ROM)
BL_I9505XXUGNG8_user_low_ship_MULTI_CERT (stock bootloader)
GSM_Modem_XXUGNG8_and_LTE_Modem_XXUGNG8.tar (stock LTE modem)
and to no avail. I keep having GPS lock issues. I did flash Adams Kernal when flashing the GE and CM11 ROMS. But surely flahsing stock everything should fix the bloody GPS
Click to expand...
Click to collapse
It looks like it may have been the GPS antenna not being connected properly when it was built. I tried SlimKat and CM11 M9 to no avail. I thought I would see if the GPS antenna was physically broken, and it looked fine. But I did hear a click when I was working with it that made me think that it wasn't attached properly. I unplugged both ends, plugged them back in, and now all 3 roms work with the GPS. So I restored my nandroid backup of the stock GNG8 and life is good. Yeah, there's Samsung bloatware, but there are enough other things in the stock rom that I think I'll just stick with it for now.
So long and thanks for all the fish,
Wayne
Well, maybe I spoke too soon? It's true that detaching and re-attaching the GPS antenna makes the GPS work again, but it only works for about a day and then goes dead again. It starts working again when I take off the back and detach/re-attach the antenna. I can't continue to constantly go through that cycle. Is it bad hardware? Do I need to find a Samsung repair shop somewhere? Or is there a software setting I'm missing somwhere?
Thanks!
Hey, just a finall wrap-up for the thread. Long story short, I eventually did a complete wipe of the phone - dalvik, cache, system, data - everything, and then did a clean installation of one of the ROMs here (Optimized CM 12.1). At that point everything snapped back to life, the GPS locks quickly, it's all the way it should be. So I guess there was something deep in the system partition that was messing it up, and it took a total wipe to clear it out properly. Happy phone user now.