From the M8 GPE thread:
digitalhigh said:
GPS Isn't working(GPS ISSUES)
Flash a stock sense ROM.
Get a GPS lock. (gps only) - You can verify this using GPS Toolbox.
Reboot to recovery.
Flash my ROM.
This doesn't always work on the first try, but once you fix it, it should stay fixed. I've personally had to try like three or four times to get it to stick...but then it's flawless.
Click to expand...
Click to collapse
This definitely isn't unique to the M8 or that particular ROM: I can't count how many Sense devices I've read about on the forums that lose GPS when switching to AOSP. And this fix has been around for years.
My question is why this fix works (especially since it doesn't seem to work 100% of the time, per DH's note above). When a stock Sense ROM achieves a GPS lock, what information is left in the phone that AOSP is able to use? What data/information is surviving the wipe?
Similarly, why does it seem that this state is not preserved in Nandroid backups? I recently got GPS to work on a fresh install of the GPE ROM. Once I did so, I immediately backed it up with TWRP. I had to hop back and forth between a few different Nandroids (to grab certain data) and when I finally did a fresh restore of the GPE Nandroid with good GPS, the GPS was broken again.
Lastly, does this fix only work if you flash the AOSP ROM immediately after using Sense? Or is there any way to get a GPS fix in Sense, restore an AOSP Nandroid, and then have GPS work?
Related
I want to preface this by apologizing if this has been covered, but I was unable to find anything with a search.
Every single 3.70 based ROM results in wakelock issues within 24-48 hours. I have tried everything, including flashing the stock rooted rom and no matter what, my phone stops sleeping after a day or so. I fully wipe, flash the rom, and I don't download a single app until the wakelock kicks in, at which point I grab spare parts and get no useful information.
I am currently alternating between CM7 and CM6 because AOSP roms work fine...they just aren't quite as solid as I would like them to be at this point. GPS bugs (I've tried the fixes), no HDMI (I've heard about the beta apps and I'll try those soon), no 4G (I realize this has been added to the nightlies for CM7, but the GPS issues are a deal breaker for now) and slow file transfers between my PC and my phone when using CM7 also kill the rom for me.
I figured I would simply flash the stock rooted 3.30.651.3 so that I could have a fully functional phone without wakelock issues if the need arose. But whenever I try to flash after a full wipe (including dalvik cache), I get stuck on the white HTC EVO screen. All 3.70 roms and AOSP roms flash fine so there must be something I'm missing...do I have to downgrade my radio or something? Any help would be greatly appreciated. And once again, I'm sorry for the post if this has been covered.
Yes the radio has to be downgraded first. I'm not sure which radio you need but you should check out one of Viruses rom threads since his roms are mostly 3.30 based.
Yesterday my gps wasnt working at all. It would not lock on no matter what I did. I was on a custom rom and I tried wiping my data/cache, reinstalling maps (just for giggles), and a multitude apps from the market that help deal with gps problems (gps fix, gps status, toolbox, etc).
When all this didn't work I decided to odin back to the last official JB update and still no gps. On a whim I decided to odin back to an ICS firmware and that made my gps work. I have no idea but it did. I then odin to UVDLJC, installed TWRP's most recent and restored my backup of the custom rom I was using in the first place and gps now worked.
While I'm happy as heck that my gps is now working and that it was not a hardware issue I'm extremely curious what happened.
I have flashed many roms lately and I cannot think what a custom rom can do to gps to hose it or if it was just one of those things. I would of thought that when I originally did an odin to UVDLJC that would fix the issue but that didn't. Whatever the flash to ICS did fixed it but what in the heck could that of been?
I figure if I can find out or get an idea what happened then I can steer away from flashing certain roms, or just be prepared that flashing any roms at all can make this happen again.
Same here.
Hello, ddcoh.
I am currently having the same issue you had with GPS not working. I've tried everything from trying tedious Play store apps to trying many different roms and kernels (clean installing every time) to completely reverting back to stock including using TriangleAway in case that did any help. Nothing worked. I have been thinking about going back to ICS to see if that worked but the last time I tried to downgrade from 4.1.1 to 4.0.4 I ended up soft bricking my phone even though I followed the steps word for word.
Can you tell how you went about downgrading to ICS and then back to JB, please? I use my GPS a lot and I would hate to find out it's a hardware issue.
Typically, it's been when people are going from 4.2 to 4.1.
Zza1989 said:
Hello, ddcoh.
I am currently having the same issue you had with GPS not working. I've tried everything from trying tedious Play store apps to trying many different roms and kernels (clean installing every time) to completely reverting back to stock including using TriangleAway in case that did any help. Nothing worked. I have been thinking about going back to ICS to see if that worked but the last time I tried to downgrade from 4.1.1 to 4.0.4 I ended up soft bricking my phone even though I followed the steps word for word.
Can you tell how you went about downgrading to ICS and then back to JB, please? I use my GPS a lot and I would hate to find out it's a hardware issue.
Click to expand...
Click to collapse
Well I used odin to flash an T999_UVALEM which was a prerooted ICS rom. After booting it up I checked to see if GPS was working and it was.
I then used odin again to flash T999_UVDLJA which is a JB rom and booted it up also and saw that gps was working. Then I just restored a backup of a room I had been using and GPS still worked.
I've been out of town and noticed that after flashing a few roms that gps wasn't working so instead of doing all the above stuff I just flashed a cm10 rom. I believe I either used a cm10 nightly (or maybe 10.1, memory is hazy) or LiquidRom and that got the GPS working by just doing that. Not sure if that will work for you but you could always backup your setup using TWRP's latest and then flashing a cm10 rom and seeing if gps is working and if that fixes it then you could then just reboot and restore the rom you are currently on and that might fix your gps for you.
http://forum.xda-developers.com/showthread.php?t=1949687
I've seen quite a few "flash back to stock, then flash AOSP" fixes to get your GPS working. All you have to do to really fix the GPS is:
1. Backup your stock ROM's EFS through your recovery. (Do NOT wipe prior to doing this.)
2. Wipe
3. Flash AOSP based ROM.
4. Restored your ROM's EFS through your recovery's advanced restore.
Done.
GPS is my ROM's Bane!
ivanmmj said:
I've seen quite a few "flash back to stock, then flash AOSP" fixes to get your GPS working. All you have to do to really fix the GPS is:
1. Backup your stock ROM's EFS through your recovery. (Do NOT wipe prior to doing this.)
2. Wipe
3. Flash AOSP based ROM.
4. Restored your ROM's EFS through your recovery's advanced restore.
Done.
Click to expand...
Click to collapse
So, I am having a GPS issue that I've been unable to solve through any of the numerous method's posted around XDA (my primary source of all things android) and related sites. It could be a simple solution, but I've exhausted my very limited knowledge and am hoping you have some input or suggestion...
I'm on the LS970 and in an over-caffeinated moment, I fully wiped the stock ROM without a backup. I know that is totally stupid, and have been much more careful with my fingers since then. :silly: I have been unable to get a GPS lock on Spleef's Carbon 4.3 20131020 (or any previous), so tried to factory restore and TWRP flashed a ZV9 ODEX (failed install), ZV7 STOCK (failed install) and SPR-ZVB which flashed successfully but gave me FCs and reboots everytime I opened an app that would get a GPS lock. I have tried the FasterGPS, GPS Status and Toolbox, and edited my GPS.conf. Since I can't get back to factory, I need another way to get to a "factory-enough" for a GPS lock...
Any ideas? I think maybe there's a path/process to follow to be able to go from AOSP to stock that I'm not doing, but I have no idea what it is.
Fingers Crossed!
I was having the same issue with Bean Stalk then carbon also. using the app GPS essentials it would show 0 satellites in the sky even though GPS was enabled.
I flashed the Optimized ROM in the DEV section and this did bring back the GPS functionality.
just an FYI since your stock ROM is gone.
etownguy said:
I was having the same issue with Bean Stalk then carbon also. using the app GPS essentials it would show 0 satellites in the sky even though GPS was enabled.
I flashed the Optimized ROM in the DEV section and this did bring back the GPS functionality.
just an FYI since your stock ROM is gone.
Click to expand...
Click to collapse
Fabulous! Thank youuuuuu!
EDIT: Is this it? http://forum.xda-developers.com/showthread.php?t=2468979
Got the GPS Lock!! (Carbon4.3)
etownguy said:
I was having the same issue with Bean Stalk then carbon also. using the app GPS essentials it would show 0 satellites in the sky even though GPS was enabled.
I flashed the Optimized ROM in the DEV section and this did bring back the GPS functionality.
just an FYI since your stock ROM is gone.
Click to expand...
Click to collapse
You have SAVED MY WORLD!! HUURAAAAYYYYY!!!!!! :highfive:
The OpTimized ROM was PERFECT in bringing back my GPS, it locked in seconds. It took me a few tries to get it active on Carbon4.3, so I'm going to give my "steps" for successful completion.
I FULL WIPED before flashing OpTimuS_V4.4 (ODEX) - that's Data, System, Dalvik and Cache. (Obvious? I first ran a full TWRP Backup of the system, data, boot)
Then I flashed, booted, and let it go through its process. It took its own "soft reboot" which I thought would turn "Bootloop" but it did NOT... rebooting to the "Semi Stock OpTimuS" perfectly. It did the "Activate" process on its own.
Then - I went to System Updates. PRL first, then Profile. Then the VITAL UPDATES were Google Maps and Play Services.
After this, I rebooted to let it reacquaint, and then installed FasterGPS, using it to clear the current aGPS. Next, installed FreeGee.
Opening the updated Google Maps, I IMMEDIATELY got the lock, but let it sit for 5 minutes. (reset "display time" to 5 minutes to keep track.)
Next - AFTER the GPS locking for 5 minutes, I did a backup of EFS with FreeGee. If you have PREVIOUS BACKUPS on the Internal Storage, they need to be replaced. This can be easily done with ES File Explorer, or any which allow root access. Go to the active (sdcard on LS970) FreeGee, copy the EFS settings, and replace those in the "/0" or Legacy FreeGee folder.
This may be "overkill" but I went back into Google Maps, got a Lock again, let it sit a few minutes and "tested" the navigation function.
While still in Maps, I powered down. Booting into Recovery (I use TWRP), I ran a RESTORE of my TWRP Backup, since the backups aren't "install" compatible. My fear was the "Restore" would override my updates, but when you run it, just "uncheck" EFS in the restore choices and you're :good:.
My LS970 booted up LOVELY, ran its normal boot process, and when I opened Google Maps .... ~*Aaaaaaaahhhhhh~* light from the Heavens! It locked FAST, and the Nav even worked!!
I have been trying to find this Fix for almost TWO MONTHS so I am on Cloud 9 right now!! Thank You @etownguy!!!
GPS locking issue
Hello all,
I am an intermediate novice at flashing, but Ive gained some knowledge over the recent years here and there. Heres the issue, I am running into the same issue as euphoric fuzion except I have exhausted all that I know. I rooted, unlocked bootloader and flashed my ls970 without creating an official Rom backup or backing up my EFS- I know, not bright of me. After using my new roms I realized that MY GPS isnt locking. So, Ive done everything from writing new NPS locations in gps.conf, attempting to go back to stock via LGNPST-Ive used the auto option, Flash tool and they dont seem to recognize my phone via download mode but the drivers are installed-pc recognizes. One flash tool actually recognizes my phone as another model. Ive tried to flash stock based Roms-one ins particular at no suceess-symlink failure. Attempted to flash ZVC stock based Rom with Firmware flash- the phone remains in bootloop from my previous ROM. In order to use the phone I have to reinstall CM11- my fav for now- but I cannot lock my GPS with out SPrints PRL update, or network update for my profile. Any suggestions? Thanks in advance
Hi all,
Just got my Note 2, and flashed 10.2 without noticing the known issue with the new opensource GPS. I read the fix in this link:
http://forum.xda-developers.com/showpost.php?p=39761558&postcount=702
I have 2 questions:
First, I'm coming from the Sprint Epic 4G Touch (SGS II variant), where there were issues when flashing new ROMs where we had to flash back to a "safe" kernel. Just wanted to confirm that there are no such issues with this phone, e.g. I can flash directly from my current CM 10.2 installation, back to a stock ROM, and then directly back to CM 10.2 (just wiping data and cache in between each flash) without any additional steps.
Second, does anyone know if I can take the shortcut of making a nandroid of my CM setup now, flashing the stock ROM, getting a GPS lock, then doing a clean install of CM, then restoring the nandroid? Will the GPS fix survive the nandroid restore? I took all day setting up my new phone yesterday just the way I like it, and I'd rather not have to go through it again.
Thanks in advance everyone!
There's no sgii like issues. You can flash a tw rom then revert back to 4.3 without issue. I found you need to have a gps lock with Google maps to get it to work in 4.3 when you flash back
It used to work but just noticed today it isn't any more. GPS will still find me, but it won't travel along with me in google maps and none of the satellites lock on using GPS toolbox. It shows 20 or more satellites available but none lock. If I do a search for nearby places it gets it right every time but it won't lock on to any satellites. I am rooted, I tried changing the rom and even loading a fully stock one and it still isn't working. I don't get how some of this stuff will work but I can't get any full lock.
Is this likely a device issue or something that I can fix?
I am also having this issue with my Pixel (non XL). Next weekend I will try and reset the device but I have had this issue for a few months now. I am not sure if it's software or a hardware problem.
JAYNO20 said:
It used to work but just noticed today it isn't any more. GPS will still find me, but it won't travel along with me in google maps and none of the satellites lock on using GPS toolbox. It shows 20 or more satellites available but none lock. If I do a search for nearby places it gets it right every time but it won't lock on to any satellites. I am rooted, I tried changing the rom and even loading a fully stock one and it still isn't working. I don't get how some of this stuff will work but I can't get any full lock.
Is this likely a device issue or something that I can fix?
Click to expand...
Click to collapse
Did you change kernels as well.
Way back in the day I had an issue like you described and the only way to resolve was to restore backup in which gps worked.
Then fire up phone confirm GPS lock. Then do all the flashing.
The only solution I ever knew to this issue was to restore a backup or start over from factory images.
parakleet said:
Did you change kernels as well.
Way back in the day I had an issue like you described and the only way to resolve was to restore backup in which gps worked.
Then fire up phone confirm GPS lock. Then do all the flashing.
The only solution I ever knew to this issue was to restore a backup or start over from factory images.
Click to expand...
Click to collapse
Yeah I changed the kernel. I tried completely unrooting and flashing a fully stock roms (March and April ROM) then reflashing the rooted rom I'm on (pure nexus) and even a non stock kernel (ElementalX) and it still won't lock.
JAYNO20 said:
Yeah I changed the kernel. I tried completely unrooting and flashing a fully stock roms (March and April ROM) then reflashing the rooted rom I'm on (pure nexus) and even a non stock kernel (ElementalX) and it still won't lock.
Click to expand...
Click to collapse
I assuming no back up then if you didnt restore that.
In my experience i dont recall flashing the stock rom alone enough to undo the change to the kernel that screwed up GPS.
It wouldnt lock on stock rom?
try flashing stock kernel by itself maybe?
parakleet said:
I assuming no back up then if you didnt restore that.
In my experience i dont recall flashing the stock rom alone enough to undo the change to the kernel that screwed up GPS.
It wouldnt lock on stock rom?
try flashing stock kernel by itself maybe?
Click to expand...
Click to collapse
Hey,
Flashing stock firmware actually includes the stock Kernel by the way. :good:
Cheers...
It didn't lock on any of the stock roms I flashed (which as user 5.1 stated included the stock kernel) but it used to work fine before on stock roms and even on pure nexus at one time. Not sure what happened or why it just stopped locking onto satellites.
JAYNO20 said:
It didn't lock on any of the stock roms I flashed (which as user 5.1 stated included the stock kernel) but it used to work fine before on stock roms and even on pure nexus at one time. Not sure what happened or why it just stopped locking onto satellites.
Click to expand...
Click to collapse
Hey,
I don't think it will fix it, since several ROMs didn't... But did you try reverting to an older version which used to work. You likely did it already. Just in case you didn't...
Otherwise you may try contacting Google or whom you bought your device, report your issue and see if they are already aware of the situation with others users maybe? As it sounds like a hardware issue...
Looks like you are far of being alone here: https://www.google.fr/search?q=goog...j0l2.8956j0j4&sourceid=chrome-mobile&ie=UTF-8
Good luck...
5.1 said:
Hey,
I don't think it will fix it, since several ROMs didn't... But did you try reverting to an older version which used to work. You likely did it already. Just in case you didn't...
Otherwise you may try contacting Google or whom you bought your device, report your issue and see if they are already aware of the situation with others users maybe? As it sounds like a hardware issue...
Looks like you are far of being alone here: https://www.google.fr/search?q=goog...j0l2.8956j0j4&sourceid=chrome-mobile&ie=UTF-8
Good luck...
Click to expand...
Click to collapse
Yup I did try that already. I am ordering a replacement tonight.