[Q] Battery Life & Performance - Nexus 4 Q&A, Help & Troubleshooting

Hey guys, im going to be joining the Nexus 4 Community soon, and u will see me alot, i will also try and develop some stuff for it,
However at the moment im preparing my self for it, by doing extensive reasearch on how to pro-long the nexus 4 battery life while maintaining performance.
After all my research i have found that alot of people recommend P.A & Franco Kernel for long battery life
However ive gone through alot of roms and what i want is the Purity Rom and another Kernel (no offence to any other devs, but Franco's Kernel seems to be a bit sluggish...) So what kernel can i use (i wanted to use Matr1x Kernel... however its stuck on 4.3)
So basically my main question is what Kernel can i use with Purity rom that will keep 6+ hours of screen on time and etc.. with good performance
If u think 6+ Hours is impossible, have a look:
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Thanks in advance, i hope no one is offended...

Related

Need help picking ROM! (Pros and Cons-list)

Hey guys!
I'm currently on ParanoidAndroid v0.4 (or is it v0.5? I don't know). But i think I wanna try something new.
Is there a big difference between all the roms? I know there are like 10 or more different out there. It's a fuzzin' jungle! And the more i'm trying to read about it, the more confused i get. So can somebody please do a quick list of the biggest (most used) roms, and their pros and cons.
For example:
ParanoidAndroid is great cuz it lets u do tablet mode, other roms can't.
I know that's not 100% true, but you get what I mean.
You can start of by saying something like "I use **** because you can ****"
I think there is ready made thread (poll) about ROM you are using, search for that. It may better help.
Sent from my GT-N7000 using xda premium
Well, I can start by pointing you to this: http://forum.xda-developers.com/showthread.php?t=1373728
As the RC's pointed out, Sir please use the search function.
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HUGE battery drain, WTF is this wakelock?!?!?!!

I've searched and can't find anything. I've installed multiple apps to help figure it out, but it never gets better. The pics say it all... what the hell is going on? I have flashed multiple ROMs and it never gets better. And yes, I wipe and do a clean install every time. This event6/irq thing is killing me. The phone never goes into deep sleep.
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@strodda there are maybe more wcd9xxx-irq related things but if you read this file
https://android.googlesource.com/ke...ffe023c1290de57c699/drivers/mfd/wcd9xxx-irq.c
which is also getting used for compiling then you will read also about PM_locks wakelocks. I also believe that it's getting used for some audio related things but I am not sure and I am too tired to find it out. I don't know or it's normal cause I never use any other app to see what apps were the most intensive for the battery then the included feature in settings.
If you have any audio mods, I suggest to turn them off/turn them a bit down since setting audio quality high on viper4android or some other sound mods are asking for alot of cpu usage, just like on games.
I also suggest to try Dorimanx Kernel or some other kernel in the development forum.

Which ROM Best for XT1575 T-Mobile

Am running a variation of stock rooted with Frankenclark Kernel. I've not particularly tweaked this phone, nor do I have exposed. I've noticed a decided slow down sluggishness, especially evident when I used the Google search bar, or need to type something in. I am using Nova Launcher and also SwiftKey keyboard. I realize that there may be some service etc.. that's creating issues, but very hard to figure it out at this point. Before I give up on the phone in general (the camera is not great, and also battery life is "eh") I'd like to give a shot at an alternate ROM. Am thinking the combination of a wipe and a new ROM might breathe some new life into this. I just flashed PureNexus on my aging Nexus 7 2013 and so far it seems to have made a big difference.
Any recommendations? I am not especially using the phone for games, nor do I really need to tweak this (e.g. Nova's tweaks are good enough).
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Every ROM is build to work good with all carriers.
Trupure
https://forum.xda-developers.com/moto-x-style/development/rom-trupurex-fast-smooth-t3237155
BrokenOS or Dirty Unicorns... Have to Google them as neither is on XDA anymore, but both are rock solid.
only reason im on trupure/ frankenclark is because of KCAL, i can add more saturation and the screen looks amazing

Abnormal Android OS and Android System Battery consumption?

Hello guys, I've been using a 6P for about 3 weeks now, coming from a Nexus 4 with CM13.
I've been getting somewhat between 3,5h to 4,5h of SoT, but everytime I check the Battery graph, the Android System and Android OS consumption seems pretty high. On my old Nexus 4, these two never got over 6%, and I didn't found many reports of those 2 proccesses taking that much bettery.
I don't really know what it can be, and I feel that I should be getting a better battery life if I didn't have this problem.
Running Stock and Unrooted on 7.1.1. Anyone got this problem before?
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Thanks!
That SOT sounds about right for this phone, unfortunately. Especially if you are on stock and don't use a custom kernel with battery easy profile.
There are thousands of report of people complaining that they are in the top list but that doesn't matter, what counts is your overall drain. Which is very dependent on the apps you use, your baseband station, and your usage. 4.5h is a good average for this phone.

Have you tried other governors for better battery life? Other kernels? What worked?

I have now started testing a little - first with changing the governors (with Kernel Adiutor) from the default (which seems to be schedutil) to other combinations (on my old OP3T conservative on the Big cores and interactive on the Little ones was looking like a very good compromise, but the BluSpark kernel also had some options for touch boost that don't seem to be active on the stock Taimen kernel; also on OP3T making both conservative would save even more battery power but you would get lag on gapless music and other similar stuff).
What worked best for you?
Changing the governor on your p2xl!?!
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Why would you do that? Battery works great
TBH I've been told by at least a couple kernel devs that the current schedulers are so optimised it's not really worth messing with them.
Triscuit said:
TBH I've been told by at least a couple kernel devs that the current schedulers are so optimised it's not really worth messing with them.
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Couldn't agree more with your post. When Flash, Flar2, and DespairFactor tell me to leave it at stock settings.....I listen! :good:
Go with the developers stock defaults....

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