Need fix for Mobile Data disconnection bug in custom ROMs - Lenovo A6000/Plus Questions & Answers

I like to try out new custom ROMs from time to time. But every Nougat or Oreo based Roms that I have tried in my Lenovo A6000 Plus has a bug where mobile data randomly stops working. Though I found some fixes but they are only temporary. Are there any permanent fix for this?

i have same problem with mobile data in custom rom above 7.0

I got a problem with wifi being disconnected, (no idea about mobile data right now) I had to restart the device (lenovo a6000) to get wifi working again, it's on stock lollipop Rom, just got it from a friend for solving this issue, what if it's because of the hardware and not from custom ROM?

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[Q] Mobile data connection hangs / stuck after new rom flashing

Hello everyone, I tried searching but I cant find solution to my issue, after flashing a new rom (audax v9.0) I am experiencing a lot of mobile data problems, often my connection stops working even if the data icon ("h" or "3g") is displayed in my status bar, and I have to turn the mobile data toggle on and off to make the connection work again.
So I decided to upgrade my modem to match my rom version (GNG1, it was XUENC2 before flashing, a stock sammy one), but unfortunately nothing has changed, I still have the same problems.
- Can it be a kernel related issue? I have lean kernel 3.4 and audax rom v9 as said above.
- or can it be a ril / modem mismatch? Is there a way to check my ril?
Thanks in advance guys.
+10000000
I have the same problem, I'm on the leaked dev base 5.0 alxander rom..
Did you find a fix for this!!!

Wireless keeps disconnect after downloading cm 13.0

Hey
I was using phoenix rom and everything was okey but after the cm, wireless keeps disconnects like every 20 30 seconds.Is there anyway to fix this? i dont want to back to my old rom.
Also i full wiped before dowloading cm 13.0 and searched through the forum but couldnt find an answer.
samsung s5 g900f
update:i think i have fixed by changing my wifi setting/channel to use only 2.4ghz.
Happened to me also yesterday,was annoying a bit,but fixed itself after i rebooted my phone,you can also try that if 2.4ghz doesn't work in the future

Weird WiFi bug on ALL nougat roms

So, i wanted to use a custom rom cuz i just love to stay close to stock android, but everytime i flash a new nougat rom on my phone, i got the same weird bug. The WiFi dropping.
BTW my phone is model 2014819.
From time to time, the wifi just loses signal and comes back after, idk, 15 to 20 seconds. This is really annoying because this causes drops in VoIP calls and WhatsApp Web keeps losing connection with the phone everytime.
I don't know why this happens on custom rom and not on stock rom. But on the other hand, on stock MIUI, when i actually loses wifi signal, like, outside my house, it wont connect to a 3G/4G connection by itself, i have to enter airplane mode and turn it off so it can connect to 3G/4G (which is annoying as well).
So there is my question, is it only with my phone? Does this have a solution?
BTW, everytime i install a new custom rom i do a full wipe before (system, data, davik and cache) and right now i'm using Pure Nexus by Rahif M, just in case you are wondering.
its an old bug .... none of our developers are able to fix it.. they are trying hard but there is no fix yet....
Oh god, didn't know about this.
Thanks for the info! Hope they can make a fix for it someday
try mi flastool so that everything will be become new in your phone. use the first released stock rom dont use the new one. just try ths method.
Yeah, this is also happening in Mi3/Mi4 custom nougat roms especially CAF based rom. This issue is not happening in Lineage based roms and Citrus caf. I have tried couple of Lineage based nougat roms in my mi4 but i haven't encounter this wifi bug in these roms.
If possible is there a temporary fix???
I guess something is wrong with our baseband. If anyone could provide Chinese ROM baseband or any different versions of basebands output might defer
Is there fix for this? Someone???
Sent from my Xiaomi Mi 4 using XDA Labs
laurorual said:
So, i wanted to use a custom rom cuz i just love to stay close to stock android, but everytime i flash a new nougat rom on my phone, i got the same weird bug. The WiFi dropping.
BTW my phone is model 2014819.
From time to time, the wifi just loses signal and comes back after, idk, 15 to 20 seconds. This is really annoying because this causes drops in VoIP calls and WhatsApp Web keeps losing connection with the phone everytime.
I don't know why this happens on custom rom and not on stock rom. But on the other hand, on stock MIUI, when i actually loses wifi signal, like, outside my house, it wont connect to a 3G/4G connection by itself, i have to enter airplane mode and turn it off so it can connect to 3G/4G (which is annoying as well).
So there is my question, is it only with my phone? Does this have a solution?
BTW, everytime i install a new custom rom i do a full wipe before (system, data, davik and cache) and right now i'm using Pure Nexus by Rahif M, just in case you are wondering.
Click to expand...
Click to collapse
Even i have this rare bug... I first discovered it in nougat custom roms but now its following me to all oreo custom roms aswell. Im using a oneplus 3T and i havent found anyone report this bug on this device yet. Have you fixed this bug by any chance? Im so sad because i did a full wipe including the unbrick tool and still no luck with the wifi drop bug. One thing i have noticed is the frequency of the drops has minimized to a great extent. Before on nougat it was dropping once every 5 min but now on oreo 8.1 its like once every 30 mins. I just hope you found something i still have to use my 3t for a few more years.
---------- Post added at 01:33 PM ---------- Previous post was at 01:31 PM ----------
abhishek 9650 said:
its an old bug .... none of our developers are able to fix it.. they are trying hard but there is no fix yet....
Click to expand...
Click to collapse
Where can i find more info on this?
pratyush28 said:
Even i have this rare bug... I first discovered it in nougat custom roms but now its following me to all oreo custom roms aswell. Im using a oneplus 3T and i havent found anyone report this bug on this device yet. Have you fixed this bug by any chance? Im so sad because i did a full wipe including the unbrick tool and still no luck with the wifi drop bug. One thing i have noticed is the frequency of the drops has minimized to a great extent. Before on nougat it was dropping once every 5 min but now on oreo 8.1 its like once every 30 mins. I just hope you found something i still have to use my 3t for a few more years.
---------- Post added at 01:33 PM ---------- Previous post was at 01:31 PM ----------
Where can i find more info on this?
Click to expand...
Click to collapse
This bug was finally fixed in Pie roms i have no idea how but im glad...
I had this bug on RR Oreo 8.1 and now Omni Rom Pie... Huawei RNE-L22.

Sleep of death in all Nougat ROMs

The global trouble with all nougat firmware
Hi guys. I amn't alone, I met 10-15 users at 4pda with such problem.
We have the bug at all nougat roms by any devs with different trees...
The sleep of death.
Personally I notice it after/during mobile internet using, but I'm not sure. For long time at home(for a week, for example) with WiFi I have no troubles. But if I am anywhere without WiFi and use 3g(don't have LTE in my country), my phone "sleeps" for some times during just one day... It isn't powered off as it's needed 10-15 seconds of button pressing to turn it on at least.
As the ROM and developer has no meaning I guess that here are the errors in the kernel. @fir3walk says that here are many bugs in our nougat tree and perhaps the trouble is involved in last_dmesg... Or some system force stopes, dozes work improperly.
Not many users have this trouble but it exists an a fact. So it would be great to detect an error and try to fix it. Perhaps not in nougat, at least in new Oreo(I haven't tried it yet so no information about this bug there). We have many ROMs, they are updated for some times a week, new roms are rolling out... But the bug stays still.
If someone else has such problem, write here. Perhaps somebody has any ideas and together we will be able to find solution...
So, all the devs who can detect an error, write us... Any tests, information, logs, etc.
P.S. By the way it is impossible to write logs of powering off(deep sleeping) via logcat or another's. If I run the logging I have no "sleepOFdeath".
It is really global trouble so let's try to fix it together.
I'm sorry for your trouble.
Lets start by figuring out which device is in question
I have a 3s prime and never saw this issue.
So do you have a 3s or 3x or 3s prime?
Hello OP, can i ask if you installed that MIUI Ported ROM based in nougat? Because when i installed it (twice) y faced this issue in every rom that i flashed afterwards, then decided to clean-flash miui fastboot rom and the problem was solved.
Maybe that's your problem.
i face it in rr rom but no in dnd rom
Guys did anyone here with the sod, flash global stable/developer in edl mode?
leyD said:
Hello OP, can i ask if you installed that MIUI Ported ROM based in nougat? Because when i installed it (twice) y faced this issue in every rom that i flashed afterwards, then decided to clean-flash miui fastboot rom and the problem was solved.
Maybe that's your problem.
Click to expand...
Click to collapse
Hello. No, I didn't try miui based on nougat.
But other users say that they notice such trouble at miui(7 android) as well.
So it isn't the cause...
Also about my phone:
Redmi 3s, 2/16, 2016030, FPC, aa1 motherboard.
bekcicandrej said:
Guys did anyone here with the sod, flash global stable/developer in edl mode?
Click to expand...
Click to collapse
Will try to flash via miflash, as I faced no problems before this SOD at 7.1.2. Always flashed my phone via twrp.
By the way, guys, my 3s sleeps well on nougat, but it isn't econom in active mod.
For example, I have made a record at our device at 6.0.1 version - 17.5 hours of screen. Nougat isn't so optimized by now... 10-11 as maximum.
Dmytox said:
Will try to flash via miflash, as I faced no problems before this SOD at 7.1.2. Always flashed my phone via twrp.
By the way, guys, my 3s sleeps well on nougat, but it isn't econom in active mod.
For example, I have made a record at our device at 6.0.1 version - 17.5 hours of screen. Nougat isn't so optimized by now... 10-11 as maximum.
Click to expand...
Click to collapse
17.5 h of SOT on what ROM?

[8.1.0] {Exynos} Not working mobile data with AOSP ROMs.

Hello. For weeks i have a problem with my mobile data using all of the AOSP ROMs based on Android 8.1.0. Today i researched and I think that modem is the problem. I also fixed it by a half - that means everything based on Google DNS working, the others - no. I think backup of modem will be able to solve my problem.
What do you think guys about this? Someone Has ever that problem with s7e or other phone? Have you solve smthn like this?
Btw. Changing DNS with rootless/root apps doesnt work.
Thanks a lot for your answers.

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