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.
Related
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!!
Ever since upgrading to ATT ICS, my WiFi and Mobile Data connections both are turned on during the night. During the day, I don't run either. When I am at home, I use WiFi and then turn WiFi off and plug in the charger before I sleep. When I wake up in the morning, WiFi and Mobile Data are turned ON. This happens constantly for me.
The second thing I tried was not putting the phone on the charger for the night. Come the next morning, WiFi is ON but Mobile Data remained off.
Something is triggering WiFi and Mobile Data to automatically turn on. I can't seem to find the setting that is allowing this to happen.
With GB, I never had this issue. If I recall correctly, GB had a setting for the sleep period of the phone. I don't remember much else of what was adjustable in that menu and I can't remember if I set anything in there for GB and data. I cannot find anything remotely like that in ICS. ICS is bloody annoying me right now with these quirks.
I wish I could downgrade back to GB right now so I don't have to deal with data turning on during the course of the night.......
If you want to go back to gb look under the development tab for return to GB from ics. It's down a ways. Not sure what to tell you about the other issues but to try and reflash ics.
Sent from my HTC PH39100 using XDA
Try Airplane Mode
Sounds like you have some app trying to make a connection to run an update. It's turning on WiFi and/or the Mobile Data connections. I'll check mine tonight to see what happens.
Try turning on the Airplane mode when you go to bed. Hold down the power button and select the Airplane Mode option. If that doesn't keep the radios off, something is really wrong.
I sometimes use the Airplane mode at night to conserve the battery, but since you're charging, that's not an issue.
megatronisabeast said:
If you want to go back to gb look under the development tab for return to GB from ics. It's down a ways. Not sure what to tell you about the other issues but to try and reflash ics.
Sent from my HTC PH39100 using XDA
Click to expand...
Click to collapse
I found the thread. Thanks. I just need to read about unlocking the bootloader now before proceeding. The only downside of downgrading is I will lose the ICS radio which is giving me such good signal strength. Before in my room at home, I would get 1 bar, now I get 2 or 3. LULz.
brucegil said:
Sounds like you have some app trying to make a connection to run an update. It's turning on WiFi and/or the Mobile Data connections. I'll check mine tonight to see what happens.
Try turning on the Airplane mode when you go to bed. Hold down the power button and select the Airplane Mode option. If that doesn't keep the radios off, something is really wrong.
I sometimes use the Airplane mode at night to conserve the battery, but since you're charging, that's not an issue.
Click to expand...
Click to collapse
This happened since day 1 of upgrading to ICS. The only software that I installed were some games and utilities that I had on GB. I never had an issue with either data connection turning on.
I might try another flash of ICS but that would mean running it for a night without the downloaded software for a couple nights and then installing each one by one, night by night.
I can use airplane mode but not for long term. I need to be able to receive calls from work when issues arise during the 2nd and 3rd shifts.
This only happens at night. It never happens during the day which makes me believe something is happening during the phone sleep time. And there's no setting that I can find for the phone sleep time like GB. Grr.....
Why not just leave data on if u don't mind me asking. Can't be using that much data really
Sent from my HTC PH39100 using xda premium
Yep I have the same issue.
I have observed the data icon appear on the stroke of midnight. It takes three attempts to keep it off till the next time I use it, or when the damn thing turns back on at 23:59:59.
Spoke to HTC support, they advised to return it to retailer for them to examine it....WTF...lol
Regards
Paul
FPV-GT said:
Yep I have the same issue.
I have observed the data icon appear on the stroke of midnight. It takes three attempts to keep it off till the next time I use it, or when the damn thing turns back on at 23:59:59.
Spoke to HTC support, they advised to return it to retailer for them to examine it....WTF...lol
Regards
Paul
Click to expand...
Click to collapse
We have two threads on this issue of WiFi and/or Data turning on at midnight. When I first found the missing voice dialer problem, I e-mailed HTC support. They responded to my e-mail and then a member of their escalation team called me. They recognize that this is an ICS upgrade issue. Of course, they don't know when it will be fixed.
If you have not already done so, log into HTC.com, go to Support and send an e-mail describing the problem. They need as much feedback as we can give them to get HTC and/or Google to fix these problems.
I am not surprised that the ICS upgrade broke some things, but the number of things surprises me.
Check your setting. Drop the drop bar and enable Wi-Fi connection then touch the bar next to the off-on switch. Touch the icon next to the home icon on the bottom of the phone and click on advanced. See the screen shots.
vivid x2 said:
Check your setting. Drop the drop bar and enable Wi-Fi connection then touch the bar next to the off-on switch. Touch the icon next to the home icon on the bottom of the phone and click on advanced. See the screen shots.
Click to expand...
Click to collapse
Doesn't help.
Sent from my HTC Vivid
Too bad. I noticed mine came on the first night after I installed ICS. Took awhile to find the settings I posted. When I found the settings and clicked on the one in the picture I never noticed Wi-Fi come on on its own since.
So I finally got around to trying Airplane mode. WiFi still kicks on overnight while plugged in.
vivid x2 - I had that checked to "Never" and I still have WiFi and Mobile Data coming on at night.
brucegil & FPV-GT - I will submit a support email ticket. I'm surprised there aren't more of us on here that are having this issue.
syrkel - I don't want either WiFi or Mobile Data on. If I'm not using it, why have it activated? All I need during the night is 2G voice so I can respond to work issues that may arise.
Just throwing another thing to look into. Try to reset the data counter and check it every few hours to see what apps are using the wi-fi data? Some of the apps even allow you to access the app settings from there as well. Check some of the app permissions and try disabling a few apps at a time that allow changes to wi-fi settings.
what a coincidence. i was just jacking around on my phone in class and found the advanced wifi option and there is a setting to keep wifi on during sleep. it has three options: always, only when plugged in, and never. hope this helps
Try installing a juice defender. It turns off data when your screen is off automatically. Also, (maybe only in the paid versions) you can set a night schedule for it to disable connectivity for a set time automatically. I have mine disable all data connections and go to silent mode from 12:30 to 8:30.
jenkem110 said:
what a coincidence. i was just jacking around on my phone in class and found the advanced wifi option and there is a setting to keep wifi on during sleep. it has three options: always, only when plugged in, and never. hope this helps
Click to expand...
Click to collapse
I tested this last night. Before I went to bed, I turned off WiFi (Data remained on). On the WiFi advanced settings I had the Keep Wi-Fi on During Sleep setting to "Always," which is the opposite of what people here have mentioned. I plugged in the charger. However, I have my Vivid set to remain on while on the charger. So it technically never went to sleep. (Makes a nice night light.) At 2:30 a.m. when I woke up, the WiFi was not on.
Tonight I will keep the same settings, but I will not put it on the charger (I'm testing the 3400 mAh Mugen extended battery). I will see if the WiFi comes on during the night.
liquidxnitez said:
Ever since upgrading to ATT ICS, my WiFi and Mobile Data connections both are turned on during the night. During the day, I don't run either. When I am at home, I use WiFi and then turn WiFi off and plug in the charger before I sleep. When I wake up in the morning, WiFi and Mobile Data are turned ON. This happens constantly for me.
The second thing I tried was not putting the phone on the charger for the night. Come the next morning, WiFi is ON but Mobile Data remained off.
Something is triggering WiFi and Mobile Data to automatically turn on. I can't seem to find the setting that is allowing this to happen.
With GB, I never had this issue. If I recall correctly, GB had a setting for the sleep period of the phone. I don't remember much else of what was adjustable in that menu and I can't remember if I set anything in there for GB and data. I cannot find anything remotely like that in ICS. ICS is bloody annoying me right now with these quirks.
I wish I could downgrade back to GB right now so I don't have to deal with data turning on during the course of the night.......
Click to expand...
Click to collapse
I wonder if this is part of Googles data collection. I have gone through 3 vivid phones in the last 2 weeks (long story). I have seen this problem happen with no apps other than what came with the phone. My wifes phone (another vivid) does the same thing. If the phone is turned off for the night, turning the phone back on has the same results (mobile data is on). This seems to be a random problem.
When you allow Google's locaton service part of the message says that you are allowing Google to collect data even when no apps are running.
Just a thought.
I've been trying to figure out what's causing it...see my last couple posts here.
http://forum.xda-developers.com/showthread.php?t=1589724
Sent from my HTC Vivid
So I'm on 5.1 stock and this is really annoying me now. Wi-Fi switches off randomly when screen is off. Wi-Fi always on is checked. Any suggestions?
Sent from my XT1095 using XDA Free mobile app
Is the battery saver option turned on? If so is it starting up to save your battery and killing wifi?
I'm also having this problem. My wifi is configured to aways on, I'm not using any battery saver and even initialized my device in security mode, but the problem continued, so it is not a 3rd party program problem. I even posted on official Motorola forums (and on a lot forums through the internet), but no one could help. I guess it is a bug on 5.1 because I didn't have this problem on 5.0.
I installed a program to solve this problem, but it needs to keep running:
https://play.google.com/store/apps/details?id=com.roamingsoft.manager
Use the wifi repair option. This is the only way that I find to solve this problem. I hope they fix it on the next version.
Sorry for my english.
muiriddin said:
Is the battery saver option turned on? If so is it starting up to save your battery and killing wifi?
Click to expand...
Click to collapse
Nope. No battery saver mode.
Sent from my XT1095 using XDA Free mobile app
pulley06 said:
Nope. No battery saver mode.
Sent from my XT1095 using XDA Free mobile app
Click to expand...
Click to collapse
I tried a few things to investigate this and without root on my device I'm potentially unable to get to logs that we could then compare. So since that approach didn't work, I have some environmental questions. Does the problem occur when you are carrying the phone in your pocket, or when it sits on a table unused for a period of time (or both). I'm trying to eliminate shaking causing the issue. You also mention that it happens with the screen off are you sure that it only occurs in that situation (that is a strange detail).
I can confirm this. It is as if the Wifi Always On setting did not work. When screen sleeps, 3G/LTE kicks in. When you wake the phone up, it'll go from 3G/LTE to Wifi. This has indeed arrived with 5.1, as 5.0 did not have the issue.
muiriddin said:
I tried a few things to investigate this and without root on my device I'm potentially unable to get to logs that we could then compare. So since that approach didn't work, I have some environmental questions. Does the problem occur when you are carrying the phone in your pocket, or when it sits on a table unused for a period of time (or both). I'm trying to eliminate shaking causing the issue. You also mention that it happens with the screen off are you sure that it only occurs in that situation (that is a strange detail).
Click to expand...
Click to collapse
Yeah it only occurs when the screen is off. The minute I switch on the screen I can see that it goes from mobile data to Wi-Fi even if Wi-Fi is on. Also, it is irrespective of where my phone is pocket or on a table top.
Sent from my XT1095 using XDA Free mobile app
I have a XT1094 (Moto X 2014) and have not noticed this. Based upon a post above you have the XT1095. We have the same Android version, just a different carrier version of the hardware. It sounds like when your device is going into one of the lower power states (the screen going off etc), the wireless is erroneously included in that transition. On my tablet I had a similar issue in that going to a lower power state would kill the sdcard which would then not properly reconnect when coming out of that lower power mode. If you prevented the tablet from going into that lower power state, the sdcard problem would not occur. Unfortunately the side effect was worse battery life in that case.
Do you have root on the device? If you do you might be able to do do a test similar to what I did on the tablet, however it would only prove the theory not solve the problem since worse battery life is an ugly trade off for a phone and the only way to actually change the sleep state transitions was to build a modified kernel that changed the sleep state itself (for my LG tablet one of the developers solved the issue and I just used the custom kernel provided)
Info on the "Sleep State" C-State is here https://plus.google.com/+PaulReioux/posts/9R8fjQdHDXD
For the tablet I had to disable the C3 (power collapse) sleep state, my post over there: http://forum.xda-developers.com/showpost.php?p=57719782&postcount=138
No idea if this will help...
I have an XT1095 stock 5.1 un-rooted, and I do not have this issue. I remember reading a similar thread here when 5.0 came out, so this is not a problem specific to 5.1. I don't know what is causing it, but it is clearly not a universal problem.
muiriddin said:
I have a XT1094 (Moto X 2014) and have not noticed this. Based upon a post above you have the XT1095. We have the same Android version, just a different carrier version of the hardware. It sounds like when your device is going into one of the lower power states (the screen going off etc), the wireless is erroneously included in that transition. On my tablet I had a similar issue in that going to a lower power state would kill the sdcard which would then not properly reconnect when coming out of that lower power mode. If you prevented the tablet from going into that lower power state, the sdcard problem would not occur. Unfortunately the side effect was worse battery life in that case.
Do you have root on the device? If you do you might be able to do do a test similar to what I did on the tablet, however it would only prove the theory not solve the problem since worse battery life is an ugly trade off for a phone and the only way to actually change the sleep state transitions was to build a modified kernel that changed the sleep state itself (for my LG tablet one of the developers solved the issue and I just used the custom kernel provided)
Info on the "Sleep State" C-State is here https://plus.google.com/+PaulReioux/posts/9R8fjQdHDXD
For the tablet I had to disable the C3 (power collapse) sleep state, my post over there: http://forum.xda-developers.com/showpost.php?p=57719782&postcount=138
No idea if this will help...
Click to expand...
Click to collapse
Don't have root. And have never rooted the device either. Somehow I'm just massively dissapointed with 5.1
Doesn't seem like a finished product at all. Battery life has plummeted from 3.5-4 hours sot easily to barely making it 3 hours
Sent from my XT1095 using XDA Free mobile app
Had this problem suddenly in 5.0 and continued in 5.1, the only fix was back to 4.4.4.
This has been posted before.
http://forum.xda-developers.com/mot...d-5-1-bugs-t3075232/post61724472#post61724472
http://forum.xda-developers.com/moto-x-2014/help/wifi-off-phone-idle-sleeping-t3053603
Here is the link to Motorola Forums that I've posted:
forums.motorola.com/posts/791e7e30c7
Hopefully this bug gets fixed in Android M.
Same problem that I'm getting. I'm sending mine back to Motorola and you guys can try that too to see if they can fix it. Apparently there's a speical dedicated team working on Moto X faults in Germany.
Anybody have any news?
Is there a way to fix this problem without going back to 4.4.4?
Yes, this time old issue still exists for me, and it makes it where I cannot trust the phone. I've wanted to use my Nexus 6 as a daily carry, but have to use my LG G3 instead.
The N6 completely drops cellular signal after the screen turns off and goes into deep sleep. After waking the phone, it requires a reboot 90% of the time to get it to reconnect to cellular service. Rare occasions I can leave it for a few minutes, toggle airplane, and get it to reconnect, but by then a reboot is faster. Obviously, a phone that drops cell service when the screen is off is no good.
The fun thing is not ONLY is it dropping cell service, it maxes out the cell radio searching. If I don't notice it dropped service, the phone gets hot and the battery dies very quickly, this also happens in AIRPLANE MODE. Yes, even when airplane mode is on, I turn the screen off, cell service "dies" and the radio kicks on and searches for signal, gets hot, kills battery, all while in airplane mode. The battery information page shows blank for the signal meter while in airplane mode screen on, but turns red and shows indication the radio comes on when the screen is off.
The only "solution" I have is to constantly play music, or have it plugged in. Currently I have an 8 hour mp3 of pure silence playing on repeat. Naturally this keeps the phone locked at 300Mhz while the screen is off and never sleeps, but the cellular radio works as normal, stays cool, and battery drain is minimal, never disconnects. The problem is: doing anything that causes said silence to pause and not noticing/remembering. Watching a video, casting something, rebooting, etc. Also the phone never sleeping is generally not good, but I can't trust the media player not to sometimes stutter and then the signal drops out. You see my trust issues. While the phone is plugged in, which also prevents deep sleep, the phone is fine as well.
Oddly enough SOMETIMES the phone does as it should. I might check the phone and notice music is *not* playing, but the signal is fine, and the device has been in deep sleep with no problems. I've yet to isolate what causes it to stabilize, but after a reboot, it's back to its old ways.
Things I've tried:
Flashed ALL the official images. (Problem exists across them all.)
Tried a few custom roms
apps that hold a wakelock. (trying to keep it from sleeping, which worked, but signal still disappeared)
Removing, downgrading, upgrading, etc Google Connectivity Services.
Different basebands
Different carriers.
Other things I can't think of now.
Current Setup:
Pure Nexus (latest)
System mode root + Xposed system mode
Bootloader: moto-apq8084-71-21
Baseband: D4.01-9625-05.39+FSG-9625-02.113
Attached a logcat of it dropping signal after screen off, and luckily caught it regaining signal as well in the same logcat.
EDIT: Alright, can I get a moderator to move this threat to Q&A. I posted in Q&A and it appeared in General... Guess that's what I get for having multiple tabs open.
sim issue
yes, this seems to be issue with N6.. (issue is somewhat related to SIM card). Can you try without SIM card inserted?
Just sell the phone. Dont waste nerves trying to devug it.
I had similar issues, but switching to 2G helped.
To be honest, these smartphone issues have been things i have experienced with all brands.
From random reboots with samsung, cellular issues with LG to phantom clicks with sony. Not acceptable given the price.
So far, every smartphone has caused issues.
shadowcore said:
Just sell the phone. Dont waste nerves trying to devug it.
I had similar issues, but switching to 2G helped.
To be honest, these smartphone issues have been things i have experienced with all brands.
From random reboots with samsung, cellular issues with LG to phantom clicks with sony. Not acceptable given the price.
So far, every smartphone has caused issues.
Click to expand...
Click to collapse
I'm not the type of person to sell something with a known issue, that's as bad as selling a car that you know the transmission is about to go out. Since it's not my main phone, I don't let it really get my nerves, instead I use it as a brain teaser. Finding new and interesting ways to get it to keep working, but at the same time I would like to find an actual fix. In case I ever want to... y'know... sell it. I'm not going to sell a defective product. I have the experience and knowledge to actually use it, and on Fi it's a good backup. The wifi doesn't cut out so it still works if I'm around wifi.
Also, replying with "Meh just sell it" is a very unprofessional and indecent response on a large forum dedicated to helping people and making their lives with their phones easier, and learning new things along the way.
Skreelink said:
Also, replying with "Meh just sell it" is a very unprofessional and indecent response on a large forum dedicated to helping people and making their lives with their phones easier, and learning new things along the way.
Click to expand...
Click to collapse
I never said that you shouldnt disclose that the phone is defective.
I assume that goes without saying.
Secondly, my experience has been that such issues are unfixable.
When i had an LG phone with issues, the solution was to sell it as scrap/defective device.
From the looks of it, your issues are unique. I also have issues with connectivity and the solution was to switch to 2G.
However, it only happens with one network operator.
Also, this is a forum, you asked for advice, i gave it to you. You dont have to like it.
Oddly enough without any system changes or anything and with how long the problem has stood... It seems to be acting correctly now. Doing some tests with reboots, etc and it seems to be going to sleep fine and not losing signal. Will continue to monitor this oddness and if I figure anything out, I'll update this thread for any of those who might still have this issue.
Hey,
so a few days ago, I've downloaded some app and ever since thing something strange happened - my WiFi wouldn't turn on.
Everything else did work - my fingerprint sensor among them.
So I've tried resetting my phone - didn't work.
I tried to flash xiaomi.eu rom - didn't work.
I tried to flash chinese rom - didn't work.
Eventually I was back to the original 12.0.9 global rom and it worked.
In all mentioned roms and this one too, my fingerprint wouldn't work anymore. If I tried to add fingerprint it would just fail with "could not add fingerprint, try again".
Once I added a a lock to my screen, in a short time(an hour at most), my phone would just get stuck, restart itself and then my WiFi stopped working again.
Once I removed the lock, my WiFi worked again after a few restarts.
I also noticed in CIT that I get "CALI test result: false" for the Fingerprint sensor check.
My guess is that if there's a lock, it tests security in some kind of cronjob and the FPS throws an exception and so the WiFi can't turn on.
Anyone has an idea what might work this out?
By the way, I have root with magisk and TWRP if it helps.
Thanks
UPDATE: it randomly rebooted and now the WiFi doesn't turn on again even though it has no screen lock..
Another update: so the first time it happened to me was after I installed power shade(and then every time I installed it). Now it happened after I installed notifix which also handle notifications. I did countless restarts and nothing helped. Then I uninstalled notifix, rebooted and WiFi is back to work.
Like magic. I really don't get why would it happen. . .
Any thoughts?
That's not software issue.
Seems like your WiFi chip burned.
This problem happen more frequently in China version of Mi 11.
Go return it back to the manufacturer and they will replace you a new one.
Because the excessive heat generation of Qualcomm Snapdragon 888 will cause the soldering failure at the bottom of the chip, thus losing the function of the WiFi chip.(or other random function. Like in yours case, it's fingerprint.)
Raymond.William said:
That's not software issue.
Seems like your WiFi chip burned.
This problem happen more frequently in China version of Mi 11.
Go return it back to the manufacturer and they will replace you a new one.
Because the excessive heat generation of Qualcomm Snapdragon 888 will cause the soldering failure at the bottom of the chip, thus losing the function of the WiFi chip.(or other random function. Like in yours case, it's fingerprint.)
Click to expand...
Click to collapse
Really? Even though wifi does work when I don't do certain things?
ben_yaa said:
Really? Even though wifi does work when I don't do certain things?
Click to expand...
Click to collapse
I am less certain now. If you can reproduce it or fix it with certain software install and uninstall. Will you use your Mi 11 to play some 3D games?
Because that's how my Mi 11 died. It sudden black screen when I played Honkai3rd, and phone's WiFi is gone after I turn it back on.
Raymond.William said:
I am less certain now. If you can reproduce it or fix it with certain software install and uninstall. Will you use your Mi 11 to play some 3D games?
Because that's how my Mi 11 died. It sudden black screen when I played Honkai3rd, and phone's WiFi is gone after I turn it back on.
Click to expand...
Click to collapse
Well, as I wrote it suddenly wifi stopped working again. Why would it work only sometimes? Could it be something else that burned?
I mean, currently, the only constant here is that the fps never works..
ben_yaa said:
Well, as I wrote it suddenly wifi stopped working again. Why would it work only sometimes? Could it be something else that burned?
I mean, currently, the only constant here is that the fps never works..
Click to expand...
Click to collapse
I think that things happen because of poor contact just like you keep plugging/unplugging it.
Soc chips has many contacts. More random function dead is possible when there is multiple solder joint failure.
Raymond.William said:
I think that things happen because of poor contact just like you keep plugging/unplugging it.
Soc chips has many contacts. More random function dead is possible when there is multiple solder joint failure.
Click to expand...
Click to collapse
But wouldn't bluetooth fail as well if the chip was burnt?
So, after my wifi turned off once again, I searched for anything I can do to fix it.. Then I decided to copy my current MIUI persist.img to phone, then booted up TWRP & ran in "adb shell" using my PC: "dd if=/dev/block/by-name/persist of=/sdcard/persist.img". It fixed the WiFi back to work!
I wanted to flash xiaomi.eu instead of this lousy ROM, however I worry that it might not work and I'll have to reset my phone again..
I didn't get the FPS to work though..
EDIT:
Now I see I actually did the opposite & copied the persist partition from my phone to this file instead of doing the opposite... So everything is random and life is meaningless. JK, anyway I have no idea what is the pattern of the WiFi to work or not to work.
Meanwhile, I locked my screen again to check if it happens again.. Will update
Anyway, my phone turned off and won't turn on again.. Tried to charge it all night and nothing happens, tried to connect it to my PC, still nothing. Back to my Samsung S10..
Never again Xiaomi...