Mystery Battery Suck. Kernel Wakelocks? LOS 17.1 - OnePlus 6T Questions & Answers

So I purchased a new (used) phone, a Oneplus 6T, and flashed LOS on it with no GApps. After a while I noticed something draining my battery and it not showing in the phone's battery stats. Any insight will be appreciated.
I put the phone on airplane mode for some time, then launched Battery Historian and noticed a few things. Something is triggering kernel wakelocks consistently every 10 minutes, which always last approx 1.5 seconds. There is also over 9% of battery use that is unaccounted for.
NETLINK and eventpoll are triggering a lot of wake sources, but I couldn't find much info about them other than this thread. In Airplane mode, Wifi was off on my phone during this test as was Wifi location scanning.
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On closer look at the kernel wake sources bq_delt_soc_wake_lock especially, [timerfd], and NETLINK seem to hold wakelocks the longest. Does anyone know what these processes are and how to limit them?

Related

Please help me figure out whats causing battery drain

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I'm using MIUI with Jame Bond Kernel 1.4.7
In 6.5 hours of PURE standby (i was sleeping the whole time) with WiFi on, the battery drained from 95 to 74 which is far too much. In battery stats there is nothing weird or out of the ordinary. The most being used by an app is google maps which is about 6%
signing out of latitude will solve the problem.
also install spare parts from the market. inside the app go to battery usage and select "partial wake usage". you'll get to know what's keeping your phone awake.
This is a pain to do on start but force stop maps helps also.

Phone not sleeping/entering doze. Crazy standby drain.

Hi all, my exynos variant of s7e is experiencing crazily high standby drain. I don't remember seeing this kind of drain during the first few weeks of getting the phone.
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I did a test to show, phone unplugged at 100%, left on table without using. ~12hrs later. whopping 60% gone. It's only the 3 processes you see, nothing more.
Anyone have the same problem? Any idea how to find the cause? Used to have great battery life. It's not normal right?
Have a look at these threads (which have been right under your nose in Q & A )
How many of you experiencing high android system battery drain?
A temporary fix for battery drain
Post your battery life!!!
Mine was doing that also, so I did a factory reset and I didn't use smart switch to add my apps and stuff. Its been sleeping beauty since. I know its a pain to reset, but was worth it.

Cell Standby Battery Drain but Mobile Radio Not Active?

So in my quest to unleash the 6P's maximum battery life I've stumbled upon this. The mobile radio is not active for more than two minutes, yet cell standby has the highest computed battery use. My wireless connection is in the green for most of the time. When the mobile radio is active, however, I see a significant battery drain. It's as if the battery is just waiting for me to turn it on before it shows the percentage go down. The last time since full charge is about 2.5 days, and SOT is about 1.5 hours. I'm using Pure Nexus rom with Franco Kernal and Naptime, all fully up to date. Anyone have a solution/cause of this?
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LOS A2017U Battery stats

I'm trying to understand some battery stats. Lately in the past month I've noticed that my battery life has not been good. Certain Google apps like YouTube, Photos, and at times Play Music will cause high battery drain with minimal use. I've tried clean flashes of LOS and I'm on the default LOS kernel. My screen brightness is set to auto and 50%. Each charge cycle I get less than 4 hours of screen on time. I keep WiFi and Bluetooth on at all times but I still feel my battery life should be better.
Anyone have some suggestions or ideas or am I getting the best out of this phone for the way I use it?
See screenshots of battery stats.
As you can see at about 50% battery used, the Photos app used 7% battery without being on for about 3 minutes....that doesn't sound right to me...
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Phantom battery drain

I'm running LineageOS 20 (Android 13).
Charged my phone to 90% 2 days ago, left it on standby afterwards.
The battery was replaced 3 months ago, and the phone does not heat up during normal use.
Came back to 15% battery remaining.
Anyone knows what's going on? Is the battery fake or something? How do I even start debugging this problem?
Other than the stock apps installed alongside the ROM, I have rooted the device with magisk and installed Adaway and Advanced charging controller.
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