GPS Not Working on Redmi Note 9S

stanwood

@phiibuntu This error message can be dismiss...
The fact is that you have to open a nav application, force the screen on (using Ubuntu Touch Tweak Tool), and leave it outside for 20 to 25 minutes so the unit can acquire the first GPS signal.
Then, the next satellite signal acquisitions will be much faster...

Phiibuntu

I try yesterday morning about 30mn, I'll try again this morning.
Going outside (dog walk ) for 30Mn doesn't synchronize gps
I'll try a little bit longer this morning.

Lakotaubp

@phiibuntu Sensor status app from the OpenStore should show if GPS is working at least. Under GPS- Source Status gives No Error, Name is Ubuntu and Method is Satelite on my OP5

Phiibuntu

I try sensor status app :

Found supported backend (check)
Active (check)
source status : no error
Other elements are empty.

nitanmarcel

@phiibuntu GPS under waydroid doesn't work. You have to use it with any of UTs apps that uses the GPS services following the instructions here: https://docs.ubports.com/en/latest/userguide/dailyuse/location.html

Phiibuntu

Yes I know I use Unav to test GPS on my smartphone today 1hour in car witout have GPS synchronising I think there's a problem with Xiaomi redmi note 9S

stanwood

@nitanmarcel GPS doesn't work in WayDroid but location does if you configure UnifiedNlp with MozillaNlpBackend in Micro-G settings:

https://github.com/microg/UnifiedNlp

How to install:

https://forums.ubports.com/topic/5907/open-ubuntu-touch-to-all-android-applications/115

Phiibuntu

thanks for information I'll test that.
But I really need gps on my phone (for a professional use in deplacement)
Waiting for -20-30mn for the first gps fix I an use it like that, but without gps I can't).

cliffcoggin

@phiibuntu said in GPS Not Working on Redmi Note 9S:

Yes I know I use Unav to test GPS on my smartphone today 1hour in car witout have GPS synchronising I think there's a problem with Xiaomi redmi note 9S

In car may not be good enough for a first fix. The phone needs to be outside for 20-30 minutes in a weak signal area.

Also it is necessary to keep Unav active all that time either by preventing the screen from locking, or (my preferred way) of preventing application suspension using the UT Tweak Tool.

Phiibuntu

I was preventing app suspension with tweak tool yet
1 hour in car I was thinking it was enough. But I take the point and I'll try 30mn in a field to be sure that gps fix can work

Phiibuntu

Last try this morning GPS doesn't synchronize 30 mn outside nothing.

unfortunatly I think I'll have to go back to another OS, it's sad I think UT have a lot of qualities

stanwood

@phiibuntu Maybe try to reinstall UT with installer to fix this (no wipe), or try OTA-21 upgrade to see if it solves the issue...
GPS should work.

Phiibuntu

I can't reinstall without wipe there's too much issue on Xaomi redmi note 9S.
(error 1 error 126 etc. bad repertory, bad rights I think).

Only way ton install UT is :
Install MUI officiale firmware (Android 10 not 11) so totally wipe UT
then use ut installer: and it works nice

j.mackay93

@phiibuntu Hi all, I got this working today, it turned out to be quite simple. Now, I am unsure of all the caveats, but this is what I did and it worked after not behaving for a long time:

Turn location on
Go to system settings > security & privacy > locking amd unlocking > lock when idle: Never
Get the SensorStatus app
Set it to never suspend with the UT Tweak tool app
Reboot
Open sensosstatus app, go to GPS
Leave next to the window for some time (it wasnt excessively long, but i also wasnt paying attention). I think the point is to stay still.
After some time it got a lock and started reporting my location! Unav and whatever else works now!

So are all these steps necessary? Idunno. But its what i did and it worked! Hope this helps!

Cheers

Phiibuntu

Hi, thanks for this I'll try the same way this morning

Phiibuntu

It works ! quick fix (about 5minutes) You save UT on my phone !

Thanks a lot

Please @sportyturks can you flag this post as solved?

j.mackay93

@phiibuntu Beaut!! I'm really happy for you!

And so thankful to everyone else who has worked hard on this project

AppLee

@phiibuntu
I marked it as solved.
I doubt OP will come back anytime soon

cliffcoggin

@j-mackay93 You don't need the Sensor Status app for gps to work, but it may be handy for diagnosis of problems.

Instead of setting the lock screen to never, which will drain the battery quickly, I suggest you prevent Unav suspension from UT Tweak Tool so that the screen locks when Unav is not in use. The same applies to OSM Scout Server if you want to use off line maps.