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Battery drains consistently overnight with no use by me. Note 4, after clearing the cache and factory reset.
After installing the lollipop upgrade last weekend, I notice via OS Monitor app that the kswapd0 system memory swapping app is running constantly with anywhere from 5-25% CPU. When the developer option "flash on long operation" is enabled, the red flash can be seen constantly every few seconds even when no apps are running and the device is sitting on the homescreen. This never happened under 4.4.4. My rate of battery use has increased significantly -- previously, I could get 8 hrs on a charge with normal use, now only 5-6 hours. GSam Battery App reports around 20-25%/hr use; previously under 4.4.4 it was 15%.
Additionally, a serious issue is that occasionally the device does not recognize the Fast Charger is plugged in -- it goes into USB Charge mode, which sometimes is insufficient to provide enough charge to avoid running down the battery when the swapping is too high! This happens even when it is completely powered down - it will not charge properly for some time. Eventually, it goes back to normal and resumes fast charging.
I have wiped the system cache (several times), but I prefer strongly to avoid factory reset (and not sure that will actually improve the swapping issue, anyhow). I wish I had not upgraded to 4.4.4, and hope that Verizon will quickly provide a patch for these problems.
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This issue was finally fixed by the VRU2BOK3 5.1.1 update. No factory reset was ever performed or needed. The phone performs great again, with less battery use and reduced lag. I blame a combination of Google (the system bugs) and Verizon (took how long to deploy?) for the fiasco.
Is there any comment from Verizon on this issue yet?
Hi Verizon, yes I am using the original charger. It has always worked perfectly, however since updating to Lollipop, on a few occasions, the phone does not properly detect that it is in fast charge mode, and only goes into a low-power USB charge mode (which is not even providing enough charge to overcome the battery drain) -- there is no error message, only in the battery settings you can see that it is showing USB instead of Fast Charging. However, eventually it goes back to working properly in Fast Charge mode on a later charge cycle. I am unable to reproduce this consistently.
In addition, the excessive swapping problem seems to be related to lollipop 5.01, so I hope you will provide at least a system update as soon as possible with more fixes. I will avoid doing a factory reset for the time being until then. Thanks.
I have had similar problems I uses to get on average 12 to 13 hours on 1 charge so I tryed calling verizon to see what tear 2 tech support had to say and I all I got was bs from 2 reps and all they told me was that it takes 2 weeks for updates on the back ends to finish and that should help wich I don't think it will
Also on a side note about a week after I got lollipop I got a small update not shure how big just saw my phone rebooting and updating one app I am figuring it was a small pack but it's hasn't fixed any thing that I have noticed
ive noticed with my phone that since lolliflop my phone no longer charges on any outlet or my usb port on my computer. i have only one outlet in my house that will charge my phone properly and that is not acceptable. we all need phones that work and that hold a proper charge.
i use the charger that comes with the phone and when i plug it into anything but the one outlet that works...which is actually an extension cord everything is fine. but when i plug it into my computer or any other outlet in my house it connects and starts charging and then after a min or less it disconnects and tells me to plug it into a charger.
It isn't a global problem, my Note 4 upgrade went off without a hitch (as did another friends) and my battery life is easily 24-48 hours depending on use which is better than I was getting with KitKat. I had some issues for the first 3 days and then it was only occasionally not solidly. I did clear the cache but have not factory reset it.
based on some additional research and some advice from xda forums, the battery burn seems to have something in particular to do with sd card usage in lollipop, or especially having installed some apps to the sd card (which I have in kitkat).. I wonder if the folks who report having no issues are NOT using sd cards? I tried moving the apps back to the main device, but it seems like it still uses some aspect of the sd card for now and thus I remain still having excess battery usage unless I attempt to factory reset (which I am still refraining from, as that is not really clear whether it will 100% improve the problem anyhow). I will attempt to experiment with safe mode for an extended period and see if there's any improvement (although it doesn't seem really a fair test since most of my apps will not be available in that mode).
I have a micro sd card but do not put apps on it, only pictures and music.
My battery today with moderate usage has used 17% in just over 7 hours.
Haven't really disabled anything or done anything out of the ordinary like I used to have to do on my S4 just to make it through a day.
Just curious (if you are running Gsam at least, since built in battery usage doesn't show you everything) if you see unified daemon using much battery, mine only shows 4s of cpu and 0.1% but I have seen elsewhere that that process was killing other samsung devices (S5 for instance) but a few chimed in with older Note models with the same report.
Update - I tried removing the sd card for a few days, but it made no noticeable difference in battery usage performance. Overall battery usage is still noticeably worse than KitKat. Based on all the reports about poor S6 battery life, I suspect it is just a Lollipop issue in general!
It isn't globally an issue though, I know of many including my own that have upgraded to Lollipop and have had no issues after the first few days in fact mine has improved in battery life since Lollipop. Have you tried running it in safe mode for a while to see how the battery does? If in safe mode it operates significantly better then there is an app that isn't Lollipop happy.
will try that next, although all my apps are up-to-date and it's not exactly apples-to-apples test if most apps are not running.
testing in safe mode for a couple of hours
- battery usage is somewhat better, but not dramatically so
- safe mode isn't very useful (as most apps aren't available), nor safe (as some non-internal apps come up anyhow via notification - can't access them directly from the home screen, but can bring them to the front by clicking the notification and then switch back via the app switcher)
- most apps aren't running, so it's not really a very interesting test anyhow. the main point still being that we never had any battery issues under kitkat even with all apps running.
It is an interesting test because running in safe mode proves that it isn't lollipop directly it is an application that is causing the problem, usually when this happens especially when it is only select phones it comes down to an application that isn't behaving correctly under lollipop, an app that you are using that others aren't using.
Also apps being up to date doesn't matter if the app maker(s) haven't updated the apps for lollipop, sometimes it takes days, weeks or even months for that to happen.
Battery drains consistently overnight with no use by me. Note 4, after clearing the cache and factory reset.
This issue was finally fixed by the VRU2BOK3 5.1.1 update. No factory reset was ever performed or needed. The phone performs great again, with less battery use and reduced lag. I blame a combination of Google (the system bugs) and Verizon (took how long to deploy?) for the fiasco.
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