Bluetooth &WiFi problem on stock MM and (N,O) rom - Xperia Z2 Q&A, Help & Troubleshooting

Hello everyone
I have strange problem with WiFi and Bluetooth on my device
I can't turn Bluetooth on, it hang some second and turned off again.. Same issue with WiFi.
I try to flash stock ftf 291,same result.
Try to back to Kitkat cm11. Flashing miui 4.4,carbon 5.1,RR 5.8.5
RR last Oreo with no luck.
Google search,form search....tried
Any help ,pleas
Thanks

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Wifi problem on stock but not on Miui

Hey there,
today a friend of mine flashed the Omega Rom 33.3 and got a wifi issue. The wifi never connects and says "Authentication failed", "wrong password" or it just says connecting and after a while it switches back, but on the MIUI the wifi works great. Also the wifi didn´t work on the stock 4.1.1.
I hope somebody can help us. Thanks in advance
Change the kernel .
jje
Thanks for the answer... My friend will try it and I will report if it worked.
EDIT: He tried a new kernel (SiyahKernel S3 v1.8) , also a new modem and it isn´t working at all. The weird thing is, that he got a full nandroid backup of my phone (Omega Rom 33.3), where everything is working fine, but on his phone the wifi doen´t want to work. The wifi worked at 4.0.4, before official 4.1.1 Kies update, and on the MIUI rom.

[Q] phone is not responding when wifi tured on-with custom roms

Hi all
Currently I am using slimkat custom rom.i have rooted my phone and flashed this rom as per the instructions..everything is working fine except my phone is not responding when I turned on wifi...I hve tried cm11 carbon slimkat and ressurection roms as well...
One thing I didnt understand is some times wifi will work but suddenly phone will stop responding after some time..and some times on turning on wifi itself phone will stop responding..
I guess this is not a hardware problem.and I have unrooted bck to official stock rom in which my wifi is working...but with custom roms am facing this issue.
Is this is a kernel issue? Can you please help me on how to reslove this??
can some one please suggest me what i can do to fix this??

[Q] Smartwath and CM roms

hello friends.
I have the following problem, when I install a CM based rom, my smartwatch switches on and off all the time. The connection is not fixed.
However, this does not happen when I install a stock rom (Nusense).
I have tried several rom, candykat, beanstalk, liquidsmooth and all the bluetooth disconnects from my smartwatch.
anyone know why this happens?
by the way, it's a sony SW2.
thanks in advance.

WiFi & Bluetooth problem

I flashed cm13 on this device at April 2016 and everything was working awesome. After that I hadn't flashed other ROMs but recently I downloaded a lot of ROMs and thought that m gonna flash em. I flashed s6 experience rom-used for 5 minutes- flashed hyper ROM -used for 5 min's and then flashed euphoria OS. Finally I settled for vanilla unicorn ROM just to find out WiFi and Bluetooth won't get turned on. Neither does hotspot work. Tried flashing most of the ROMs available for this device including cm13 and all but was not able to fix the prob.
Finally I flashed s6 experience ROM again and used it for about half an hour to find out that my WiFi and Bluetooth are working like a charm. I was too happy and checked if its working in other ROMs too like cm13 and indeen it was.
But then again the problem persisted and again flashed s6 ROM with the hope that it would get fixed but it didn't. So I just thought that I would stick to this ROM to find out the next morning which is today that WiFi and Bluetooth are again working. So I moved to nameless ROM 3.0 but about half an hour the problem occurred again to leave me in vain.
Please help me guys, I would be thankful.
Please help!!!!!!!!!!
Sent from my GT-I9300 using XDA-Developers mobile app

Help!!!! GPS not responding

My kenzo 2/16 GPS not responding after install custom rom.
I already install nos 7.1 and nos 8.1 (latest) and lineage os.
But all rom give me nothing on GPS.
I check in GPS checker. Mya GPS doesn't show any signal.
I already try gpsconfig thing. But same result
Help me please.
This happened to me recently. Just Flash the latest firmware. It'll be fixed

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