[Q] WIFI is dead after 'crash' - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

I have a serious problem with my Galaxy Note. All of a sudden Wifi is not working anymore (cannot be turned on anymore at all). Any ideas as how to get it fixed?
Background: I was playing a online game, put the device on the table (waiting for a timed task to finish). About 5 Minutes later I was picking it up again and noticed that the phone was shut off. Turned it on again and noticed that WIFI was greyed out. Other bugs noticed: The game data was wiped and all device administrators have been unselected (I use a tool that needs device administrator privileges to turn on the phone by swiping over the motion sensor). I don't know if WIFI was turned on or off at the time of crash. Anyhow - seems like some files that were in use (or recently in use) were deleted/corrupted. Probably including some WIFI components.
Stuff tried already: Turning Flight mode on/off. Rebooting Phone. Removing Battery. Various service codes found on the net like *#232339#, *#526# and *#528# all which do noting (do not open anything; seem to be invalid).
Phone is running on Stock Android 4.1.2, it is NOT rooted.
Any advices how to fix the problem (I'd really really really like to keep my app data, so factory reset is something I'd like to avoid). Found a tool called "fxr wifi fix and rescue" but dunno if it would be aplicable in this case or if it could make things even worse. Anything else? Any log files that can be checked? Anything to determine if this is hardware or software related?
Thanks for any help....

Related

[Q] Reboot using Airplane mode

Sometimes I'm in areas where I don't get the best reception (i.e. some lecture halls during school hours) and I choose to put my phone in airplane mode so as to conserve battery when the class is over. However I find after trying to come out of Airplane Mode my Revo always reboots. As far as I can remember this issue has also happened in Decrapped 1.0. The same thing happens when I turn on GPS and choose to go to Google Navigation I get rebooted. After the reboot occurs I can turn on the gps/airplane mode etc without any problems. But does this issue happen to anyone else or is it perhaps just my phone? Thanks!!
I find that my revo does the same thing with google nav beta, it will sometimes hang and reboot too. I am running stock rom with a root. When I rotate phone the landscape view is sometimes corrupted with tiny blocks instead of the maps drawn correctly. I have to exit nav app and reload
I've had the same thing happen with airplane mode. I don't really use it often so I figure I can live with it.
Same here. The Revo doesn't seem to like hardware mode changes at times. I get reboots when switching into Bluetooth occasionally.
[I'm Revolting -- are you? Beamed directly into your brain by Revolt 1.3]
I'm happy to hear I'm not the only one this happens to. Do you think LG will possibly release a fix? (or more people will have to raise concern about it) or possible for a dev to take a crack at it in their free time? Thanks for the feedback guys!
Cryofalcon said:
I'm happy to hear I'm not the only one this happens to. Do you think LG will possibly release a fix? (or more people will have to raise concern about it) or possible for a dev to take a crack at it in their free time? Thanks for the feedback guys!
Click to expand...
Click to collapse
I'm only adding this due to the fact that I was constantly having issues when tethering with the Verizon 4g Hot Spot app. When running it, I found myself needing to reboot because the data connection would get lost and sometimes go into 3g, causing all sorts of headaches with doing things on my computer, such as redesigning websites, including my own.
What I found, though, related to this post, is using the airplane mode to kill the data connection and restart it, was getting me 4g and a few minutes to a few hours of Internet again until the next glitch.
Overall, modded, ota updated, downgraded, whatever, using that method never rebooted my phone. My thoughts are that it's possible some app might be causing that. I don't use Nav anymore, except as a last resort because it is so buggy, it would cause my phone to crash over and over, and rebooting. So, as for LG or Verizon coming up with a fix for this issue, I don't know if they would see it as one because it's not something everyone is experiencing and with as much as I use(d) that method, it never once happened to me. Please don't take that wrongly, just wanted to point out that it might be a certain app and allow those having this issue to seek another solution, maybe comparing apps installed to see a common denominator.
And, because I see a lot of posts relating to tethering issues with Internet freezing or dropping out, I found, on my LINUX machine (so far), that setting the MTU to 1300 seems to have solved that issue. I know this last part isn't directly related to the original post, but is the reason I kept using the airplane mode method and thought this added information might help someone doing what I was...
-Cybie
Sorry for the bump, but as of flashing Revolt 1.5, the issue in my original post seems to have been corrected as I was able to go from airplane mode to google nav multiple times and didn't reboot at all. so whatever the issue was seems to have been corrected. Thanks MT!!

FlightMode and SDcard issues

Hi,
I'm having a bitof a trouble with flight mode recently - it worked as expected till January, but now when i deactivate it I don't get the PIN dialog and the SIM won't unlock consequently. Only way to solve this so far seems to be a reboot.
On reboot I get the message that the SDcard cannot be accessed and that I should check it - a little later on it works quite nicely
My IncS runs VirtuousAffinity 2.05 plus one UOT mod. Apps: Cerberus, LBE Privacy Guard and CF lumen are those who interfere closest to hardware level - none of these are activated when the sdcard message appears, they are loaded later on.
Anyone else having similar problems? Or maybe some hints about how to solve it?
Do you really need to use flight mode? I don't know your circumstances but data can be switched off and the phone can be set silent without using this mode.
Yes, I need it, 'cause I need to be at places where networks are shielded off and the phone keeps trying to connect while not in flight mode, thus sucking the battery empty.
But thx anyway for reminding, that may help a little.
Any other hints anyone?

[Q] Unknown App Flashing When Toggling Wifi

Last night I was at home and noticed my wifi wasn't on, so I used the quick settings in the shade to toggle it. After a few seconds, wifi connected, and some unknown app took focus and closed repeatedly. After a few moments, it stopped and all was well.
I thought it was strange, so I turned wifi back off and the same thing happened. I rebooted, tried again, and got the same result. I was trying to think of a way to see what was happening, so I tried using the Screen Record function in Gravity Box, which didn't help much, because it happens so fast, and no info is displayed, just a black window that goes away quickly.
I then turned on the CPU usage in Developer Options to see if anything consistently came to the top when toggling. I saw a few apps each time Plume (Twitter), and Maildroid (email) were two of them. Both of these apps behave differently on wifi and 3G/4G (push vs. pull), so thought -maybe- it could be something with that. I uninstalled both of those, rebooted and tried again, getting the same result.
I recorded the screen when this was happening with the CPU usage displayed, and was wondering if anyone has any ideas? I don't really want to uninstall and reinstall EVERY app on my phone, so I was hoping someone may have seen this before or see something I'm missing when watching it happen.
Video: https://copy.com/8L6VTsqcdbUjVTz
Thanks for any input anyone can offer!
Do you check virus from your phone ?
I am also having this, seems to be due to 4.4.2 OTA, which I continue to delay as I am rooted.
Mine doens't only happen with wifi change, but also just randomly when using hangouts, keyboard stays out but hangouts min -> maxes quickly. I have tried freezing the update apps but it apparently didn't do anything as I was still asked to update earlier.
Only hangouts? I have that app disabled.in the app settings.
I can't say for sure that being on 4.4.2 fixed it, but I am on 4.4.2 now and it is not happening anymore.
I unlocked my bootloader and did the 4.4.2 SBF, unlocked and rooted. I installed probably 99% of the same apps (only ditched 1-2 that I never used anymore) and I am not having the flashing issue anymore.
Hard to tell for certain if the pending OTA was the cause, but it may have been.

Nexus wifi turning itself on

It doesn't matter how many times I turn the wifi off on my nexus 6, it seems something keeps turning it back on. Im not sure how long it will take to turn back on, but I will look at my phone and notice that its back on again. It also doesn't matter what wireless AP I am by.
Is there a way to see what app, or whatever, is turning it on so that when I disable wifi, it's actually disabled until I change it otherwise?
I've been having something similar, coupled with my wifi disconnecting and reconnecting in a loop every thirty seconds. I'll notice my wifi looping like this, so I'll turn wifi off, only to have it turn back on by itself within ten seconds and start looping again. Really strange. This began about two days ago out of the blue. I haven't been able to pin it down to anything.
I'm running stock 6.0.1, Jan 2016 OTA.
therealcrazy8 said:
It doesn't matter how many times I turn the wifi off on my nexus 6, it seems something keeps turning it back on. Im not sure how long it will take to turn back on, but I will look at my phone and notice that its back on again. It also doesn't matter what wireless AP I am by.
Is there a way to see what app, or whatever, is turning it on so that when I disable wifi, it's actually disabled until I change it otherwise?
Click to expand...
Click to collapse
Just wanted to follow up so you could check if this applies in your situation.
I finally found the culprit! I decided to reboot into Safe Mode to disable all third party apps and see if it still happened. When in Safe Mode the wifi was rock solid! That told me it was some app causing my problems. So I uninstalled several apps to try to narrow it down, especially those that had been updated recently and rebooted normally. It still looped the wifi.
After banging my head against the wall, I decided to go to developer options, show running processes, and see what apps were running that could be messing with the wifi. The normal apps you would expect to be running were listed, plus the MyAccount app from StraightTalk.
Why the heck would that app be running a process? I opened the ST app and looked through it's options. Low and behold was a section called wifi management. Holy crap, this could be it! I look in that section, and it was set to manage my wifi and connect and disconnect when sufficient access points are nearby. I turned that off, closed that app, and verified in Running Processes that it was indeed gone. It was, and my wifi has been solid ever since.
Stupid, stupid app!
OH MY GOD. This has been driving me nuts. Thank you so much!

Signal problem. Update: Info for others with issue and solutions.

After searching extensively on the whole Nexus 6 signal debacle. I've gotten some observations and studies to share and a couple questions.
I recently obtained a Nexus 6, which I already knew had the ! no data connection problem. (I tried to help the previous owner with the issue before, calls/texts would work, but data wouldn't) They were naturally on T-Mobile, so I assume it was related to the project Fi launch. Googling the issue recently states mostly T-Mobile and Sprint users having the issue, so I decided eh can't pass up a good deal! A like-new Nexus 6 for only $70, who can resist? I figured even if I get the no data issue, I can just turn on airplane mode, use as a mini-tab.
Here's where it gets interesting: I use Cricket (which is AT&T of course), popping the sim in results in good signal, LTE, etc as expected. Randomly (sometimes within 2 minutes) instead of the "!" on service problem, it drops to No Service completely. A reboot and it comes back fine, this wouldn't be too much of an issue except it happens EVERY 2-10 minutes. The only way to get it back is a reboot, airplane mode toggle doesn't help.
Which leads into the second part of the conundrum: Airplane mode doesn't help.
I figured I might just keep it in airplane mode and use as a tablet... The phone said no, Was fully charged before going to bed, by morning 17%. In airplane mode no less, which is of course is abnormal. Looking into it, it seems the phone never went into Deep Sleep, which I immediately delved into the cause. At this time I was running CM13 latest nightly, naturally I went for a fresh stock flash... Same issue. I even stock flashed to 5.0.0 and the same issue... Looks like hardware, but the randomness is the confusing part and you'd think if it was hardware a simple reboot wouldn't fix.
The phone never slept because when it would "No service" on me, I'd get wakelocks for "msm_hsic_host" which would keep the phone awake EVEN IN AIRPLANE MODE, which also in the battery settings showed the red bar for "bad" signal. This happens with AND without a sim, airplane mode or not. I'm currently on Pure Nexus and Franco's kernel to disable hsic wakelocks, and I'm seeing another one for "qcril_pre_client_init" when the issue happens. Which would be the Qualcomm radio interface layer, by the name, I'm assuming android is trying to turn on the radio and keeping the phone awake. This shouldn't happen in airplane mode, I've also tried "Toggle Cell Radio 5.0" to directly turn off the cell radio; Issue remains.
The randomness of when it happens, how it's "resolved" by a simple reboot, and the fact that airplane mode has zero effect on when it happens basically cripples it as a tablet as well, it never sleeps so the battery life is pretty crap (about 18%/hour screen off). After a reboot the thing is great as long as the thing has signal, runs cold, great life, charges fast, sleeps deep. Befuddled that it still does it without a sim card and airplane mode...
My question to the users here: If anyone else has any insight on this, and if anyone knows how to completely disable the cellular interface and literally turn it into a tablet. Is there any rom or such that doesn't try to wake/use the cellular radio and keep the thing awake.
EDIT: Yes, I've run the factory images from google, 5.0.0, 6.0, and 6.0.1 during testing.
The sim card is new, I've already changed it.
Yes the device is actually an XT1103, not a knockoff.
Sorry if any of this information wasn't clear enough.
Further Observations:
During the night I had zero reboots (It's setup to reboot on signal loss, so from here reboot == signal loss), then after taking it off of charge and turning the screen off, then back on after about 5 seconds the signal was lost and it rebooted.
This got me thinking, so on the way to work, I streamed music and had zero problems, not on the charger. After reaching work, I moved some offline music onto my phone and it acted fine as well. The phone never reboots if the screen is kept on as well.
This tells me it's something about how android switches to low-power on the cellular radio. Perhaps the radio cannot wake up properly from the low-voltage sleep state.
tl;dr
When phone is 'active' and not sleeping, problem doesn't arise.
Acts normal with screen off: Streaming music, Regular music, Plugged in.
Acts normal with screen on always.
If doing nothing and phone sleeps: reboots, usually on wake up (i.e. turning screen on to check time)
Likely issue with sleeping/low-power to the cellular radio.
Current bad "solution" play music with phone muted.
However, this doesn't seem to be too bad an impact on battery life, music player has used a total of 1% in the last two hours, screen is top again, where it was android os.
EDIT: Went all day without dropping signal by keeping music playing muted. At 52% after about 12 hours, 3 hours screen on, an hour VOIP call, wifi on the entire time. Not the best solution, but it's livable.
Further testing: I've tried a couple "keep awake" apps that set wakelocks and they do not seem to help, but this might be that they are not designed for marshmallow.
I've also "unoptimized" anything related to phone/cellular in the battery settings to prevent doze from sleeping them, no effect, double the apps directly hit the radio.
first off, first thing that I would do is fastboot flash the latest 6.0.1 factory image(then root it). as the issue sounds like a software problem. if it is, this would fix it. if it still is broken, then I'd root it for sure, then disable the cellular connectivity issue with my root access. without root, you are stuck with airplane mode, only.
simms22 said:
first off, first thing that I would do is fastboot flash the latest 6.0.1 factory image(then root it). as the issue sounds like a software problem. if it is, this would fix it. if it still is broken, then I'd root it for sure, then disable the cellular connectivity issue with my root access. without root, you are stuck with airplane mode, only.
Click to expand...
Click to collapse
I mentioned that I stock flashed... I tried 6.0.1 and even 5.0.0... Also I'm on a custom rom + kernel, so I kiiiinda have root access as well. I don't mean to sound uppity or anything, but did you even read my entire post? If you have a way to completely disable the cellular radio, by all means share. Only other thing I can think of to try tomorrow when I get time is to flash an incompatible baseband, but I can see it causing the same issue with I/O problems.
Skreelink said:
I mentioned that I stock flashed... I tried 6.0.1 and even 5.0.0... Also I'm on a custom rom + kernel, so I kiiiinda have root access as well. I don't mean to sound uppity or anything, but did you even read my entire post? If you have a way to completely disable the cellular radio, by all means share. Only other thing I can think of to try tomorrow when I get time is to flash an incompatible baseband, but I can see it causing the same issue with I/O problems.
Click to expand...
Click to collapse
By saying what you did that doesnt say if you went completely stock with the google images or some of the roms floating around. There is something in the background trying to force the device to connect to cell netowork. I would completely erase the device and make sure to format everything with the flash all bat file. You will ose everything on the device.
Also could be a lose connection in the hardware.
zelendel said:
By saying what you did that doesnt say if you went completely stock with the google images or some of the roms floating around. There is something in the background trying to force the device to connect to cell netowork. I would completely erase the device and make sure to format everything with the flash all bat file. You will ose everything on the device.
Also could be a lose connection in the hardware.
Click to expand...
Click to collapse
When I said stock, I meant the factory images from google... I've completely wiped the device several times. I'm not new to the entire process... That's why in my original post I stated possible hardware, but curious as to why it does it even in airplane mode when it shouldn't poll the cell radio at all. Further testing seems to say that disabling location access (I generally use battery saver, gps only for navigation), it holds signal longer. Potentially something wrong with how the system requests location.
Skreelink said:
I mentioned that I stock flashed... I tried 6.0.1 and even 5.0.0... Also I'm on a custom rom + kernel, so I kiiiinda have root access as well. I don't mean to sound uppity or anything, but did you even read my entire post? If you have a way to completely disable the cellular radio, by all means share. Only other thing I can think of to try tomorrow when I get time is to flash an incompatible baseband, but I can see it causing the same issue with I/O problems.
Click to expand...
Click to collapse
like was said, kinda sounded like you flashed a stockish kinda ROM. if not factory image, I recommend it.
Skreelink said:
When I said stock, I meant the factory images from google... I've completely wiped the device several times. I'm not new to the entire process... That's why in my original post I stated possible hardware, but curious as to why it does it even in airplane mode when it shouldn't poll the cell radio at all. Further testing seems to say that disabling location access (I generally use battery saver, gps only for navigation), it holds signal longer. Potentially something wrong with how the system requests location.
Click to expand...
Click to collapse
Are you sure it is a legit device? I have seen some knock offs have this issue.
You know we are all kinda dumb here. Myself included.
Run a logcat and see what is trying to connect.
zelendel said:
Are you sure it is a legit device? I have seen some knock offs have this issue.
You know we are all kinda dumb here. Myself included.
Run a logcat and see what is trying to connect.
Click to expand...
Click to collapse
Yes it is a legit device directly from tmobile. I'll do more testing tomorrow.
Maybe try a new sim card,only thing I can't think of
holeindalip said:
Maybe try a new sim card,only thing I can't think of
Click to expand...
Click to collapse
Already got a new sim, updated info in original post.
Attached a screen with battery info, from testing it's pretty accurate.
After implementing my "solution" for a couple days, it seems to sleep fine now without losing signal. Remember, I have tasker setup to reboot on signal loss so this is informative that it actually sleeps now...
Was the phone ever wet? The signal loss is common on my Nexus, as with my previous, always have missed calls etc, got a voicemail but no missed call notification. However it doesn't really describe the radio issue your describing. I'm almost certain the mother board is malfunctioning. The radio turns to low power mode in doze, but never returns to full power state. Seems to me that it's a communication issue from the motherboard. Neat idea for your "solution".
Sent from my Nexus 6 using Tapatalk
Jnewell05 said:
Was the phone ever wet? The signal loss is common on my Nexus, as with my previous, always have missed calls etc, got a voicemail but no missed call notification. However it doesn't really describe the radio issue your describing. I'm almost certain the mother board is malfunctioning. The radio turns to low power mode in doze, but never returns to full power state. Seems to me that it's a communication issue from the motherboard. Neat idea for your "solution".
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Phone has never been wet or suffered any trauma such as a drop or high temps. It's an odd little thing.
Try flashing a different modem?
dcrews said:
Try flashing a different modem?
Click to expand...
Click to collapse
I have, I think it's a hardware problem where the modem can't wake up from low power state similar to some cpus unable to wake if set too low.
Seemingly a breakthrough
Did a few more things and testing and I seem to have gotten onto something. I've attached screenshots showing just over 3 hours deep sleep and included battery info page. As a recap I couldn't get 10 seconds of deep sleep before tasker would wakeup the phone because it lost signal, then wait 30 seconds before rebooting it to get signal again, unless I was playing music (which kept the phone awake and thus never lost signal). You may notice on the upper left the carrier symbol, I'm on Project Fi and using Signal Spy to show which carrier I'm currently on. After doing my tests today it swaps carriers fine without ever completely dropping the radio and requiring a reboot to regain signal.
I'll do more tests and see how long, if it does to act up. If I seem to have actually found a real solution, I'll post what I did to resolve the issue just incase any other Nexus 6 users are experiencing problems.
Edit: Small note worth mentioning, wifi seems more stable as well. I'm able to keep AndroIRC connected with the screen off whereas I was having issues with it disconnecting randomly. This MAY just be due to something else, but still noting it here.

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