Hi, I'd like to first start off by saying that it all boils down to personal preference in the end but I'm currently having a hard time deciding what to pick and what to do. There's so many choices and alternatives, so what I'd like to hear is what you yourself feel about the matter of about; Roms, kernels, underclocking and undervolting.
I should probably mention that I have a Google nexus 7 2013 (deb).
It's rooted, unlocked and flashed so many times but I keep coming back to stock due to the inability to make an educated decision in what I should have.
I'm currently running the stock Rom, rooted of course and currently with the elementalx kernel.
I've been trying several roms but none of them feel quite right.
I was going to try paranoid Android but as it stands now it appears it's without a lot of its intended customization that spoke to me in the first place. Leaving it to feel almost stock but with a few extra features, which led me to come right back to stock with gravity box.
What do you believe is a good Rom and kernel for the maximum battery life?
Note that I don't really game on the device, I mostly browse the Internet and listen to music and muck about in the settings, I like to tinker.
Does underclocking and undervolting make a difference in the end?
Please share your experience with all of the above, or any if you have tried it. Please try and not make any assumptions and keep it as civil as possible.
It really depends what you're looking for in a ROM/kernel. For you it seems you really care about battery life so you're definitely going to want both a custom ROM and kernel. I recommend purity ROM or clean ROM and either Franco or elementalx kernel for battery. As far as UC and UV underclocking can save heaps of battery but at the significant cost of performance while undervolting can save a bit at no cost to performance but may cause stability issues.
Sent from my Nexus 7 using XDA Free mobile app
THEBANDIT420 said:
It really depends what you're looking for in a ROM/kernel. For you it seems you really care about battery life so you're definitely going to want both a custom ROM and kernel. I recommend purity ROM or clean ROM and either Franco or elementalx kernel for battery. As far as UC and UV underclocking can save heaps of battery but at the significant cost of performance while undervolting can save a bit at no cost to performance but may cause stability issues.
Sent from my Nexus 7 using XDA Free mobile app
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Yes, battery is probably the most important aspect for me and second to that I love customization and tinkering with stuff.
I've been running Francos kernel as well, I actually just reverted back to r16 from elemental.
As far as those two roms go, which one would you pick and why?
It appears I'm a sucker for AOSP, not sure why, but it seems widely more customizable, especially since I'm already very used to have the KK gravity box with the xposed framework.
Update; I've been mucking about with the voltages and I think I've found a pretty good balance so far, I have undervolted by -75mv across the board with Franco. I tried going to -100mv but I found out that Spotify can't start under those conditions, it crashes on boot.
I have also underclocked down to 1242mhz while keeping the lowest 384mhz.
It feels stable, the battery has been alright today, but I'd like to squeeze more out of it.
So how much more effect would having another ROM really have? I've read on this site that it's little to no effect at all. But then again, I've seen skeptical people writing that underclocking and undervolting doesn't really do that much.
I have to tell you, it's quite a noticeable difference, but people will tell me it's placebo.
Someone with a bit more ROM experience than me, feel free to step in and give me an educated review of what you feel works.
Update2; I have a follow up question, do the CPUs have to work harder when it's undervolted? I have seen a rise in the workload for them, very sporadic.
It's sort of like peaks and valleys in the diagrams.
Which brings me to the next question, if that's the case or not, will there be a decreased lifespan in them?
Related
im a big fan of nief's rom comparison, and i think the same concept could be applied to Kernels. I know performance and Battery Life will vary by ROM, but if we get enough responses the different ROMS wont make too big of a difference. THis is just a draft, feel free to message me with suggestions or info.
This is a group effort, i need testers for CM Snap and net's kernel, message me with your results!
https://spreadsheets0.google.com/ccc?key=tzhby6p54vqXnyxbE_e2APw&hl=en#gid=0
seems like a good idea, i really only care about performance and battery life. any point to putting kings kernel on there, he updates it daily lol
yeah, thats why i dont have a ton of things listed.
This is a good idea
Now that I bought an extended battery the only thing I care about is performance
I still need testers!
Sent from my HTC EVO 4G
testing bakedsnack #5 and kingxkernel today!
I think these comparison charts are a waste of time to be honest. The only way it would be effective would be if it was the same person doing all the testing, under the same conditions (ROM used, tries done per benchmark, specific time after reboot, etc.)
With kernels especially, the ROM you're using it with will play a major role in benchmark and stability yields. Not to mention the what apps you have running in the background.
new here,
dont want to ask the noob question of which kernel is the best...but can I get some opinions on what kernel you guys use and why?
I basically want to be able to undervolt a bit across the board, and have an improvment in battery life without losing the snappiness of the phone.
nothing major....I noticed the Franco Kernel is very popular, but there isnt any details on the op about it per the creators style.
Also, I read if you come off of Francos, you need to flash the reset kernel...where is that?
thanks
all help is appreciated
Franco is great. Doesn't UV, though.
Honestly, check out Harsh kernel. It's already UV'ed and allows for more. Also, it is QUICK. Battery life is great.
Personally, I use Matr1x kernel. I wondered the same question as OP and I jumped around a few kernels. I used Franco, Bricked, and now Matr1x (might have tried out IntersectRaven's, but I forget). Allows for undervolt and has a few governors as well as I/O schedulers. I like to settle for one thing so right now I'm content. I can't judge battery life, because I don't completely rely on kernels to do it for me, rather I manage my apps and screen, auto sync, etc. myself.
I believe the reset kernel is the stock kernel, which you need to flash before any custom kernel, but... not quite sure
There are some great kernel devs here, as you would assume (random order): Franco, Morfic, Mathk1d, Harsh, etc etc. All with individual qualities, I however find common details in most of them; great improvements in battery life & performance being the biggest compared to stock.
Try them all, they're free & it's easy enough.
(Personally, I have two backups in twrp that I always revert to: rasbean + trinity & minco + franco. Seen you asked..) :thumbup:
Reset kernel: http://forum.xda-developers.com/showthread.php?t=2024982
I've been using motley since day one that I've had my N4. Jumped to franco to check it out but always ended back with motley. Most of his builds are tested before release and he will tell you if they're for testing (alphas), tested a little bit (betas) or stable. There was a few weeks where I didn't even update my kernel because it was perfect (at least for me) and just updated to get the later features. There are a lot out there and its just a matter of testing and seeing which kernel/features fits our needs. :good:
On my sig we have a chart going on with different versions that have been tested with voltages and binning.
MiNCO has been great for me
AW: kernels
Trinity kernel (latest, ondemand) and rbj. Nice combination. Realy fast, without the need of extra tweeks. UV by default. Smooth.
Used Matrix 5.5 bevor, also snappy, but drained my battery faster.
Francos kernel with minco rom worked great on battery life, but was not that smooth. But haven't tried the latest francokernel.
Everything just personal, and battery life depends much on the way you use your n4.
Sent from my Nexus 4 using xda app-developers app
For me, Faux's kernel is hard to beat
Very good battery life, potential to UV, extremely stable, super smooth, release schedule is relentless and faux is quick to help out troubleshooting.
But above all else, the one feature that stands out above all else is full colour control with gamma adjustment! This alone makes it worth it, completely unleashes this device's screen!
Sent from my Nexus 4 using xda premium
Trinity has excellent performance and solid battery. Highly recommended.
Sent from my Nexus 4 using xda premium
This is completely subjective, different kernels work best for different people. Try a few out and see which you prefer
I'm on stock 4.2.2 at the minute but I've rooted / unlocked the bootloader. What I want to know is which ROM(s) / kernel(s) would be best to improve battery life but also add additional features? I know everyone will have their preferences but there's quite a few ROMs out there and I don't have lots of time to reflash over and over so I'd like to know which ROMs and kernels are generally considered as the best for additional features and battery life.
Thank you.
FTMDan said:
I'm on stock 4.2.2 at the minute but I've rooted / unlocked the bootloader. What I want to know is which ROM(s) / kernel(s) would be best to improve battery life but also add additional features? I know everyone will have their preferences but there's quite a few ROMs out there and I don't have lots of time to reflash over and over so I'd like to know which ROMs and kernels are generally considered as the best for additional features and battery life.
Thank you.
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Lots of good rom`s and kernels available. You have to try them out yourself and keep the one`s you like most
I was thinking of flashing Franco's kernel and staying on stock. How do you find it?
The best ROM and kernel is what YOU like the best. This will be closed in 3 2......
Sent from my Nexus 4
FTMDan said:
I was thinking of flashing Franco's kernel and staying on stock. How do you find it?
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For me it works great. Good batterylife, color/gamma control and performance :good:
While most people will tell you that ytou have to find out for your own because everyone is diffferent. Thats true, however it looks like your are asking for our personal opinion.
Paranoid Android hands down. The most innovative ROM out right now. Other have now started to inlcude some of their features in their roms, so that tells you a lot.
Cyanogen- This WAS the most innovative ROM before PA, its still however the most stable when it comes to bugs and tweaks.
AOKP or Carbon These 2 roms are awesome however Carbon is made from CM i believe with their own twist and tweaks.
Thats my take on it, howver take a look at this article, its a great read on the top Roms and why.
The kernel matters most for battery life. Franco kernel is the best one I've tried for battery life. Stock rom or cyanogenmod seems to be a tiny bit better for battery life but honestly it might just be a placebo effect. What I do like about cyanogenmod is the fact that you can adjust the auto-brightness levels of the screen. So if you want a dimmer version of auto-brightness you can do it and save battery life.
Hello, i am rooted with stock rom 4.5.10.
Can anyone suggest me a good kernel that could help with the performance of the device. or should i stick with the stock one.
Depends on your usage. If U want a even better performance is ElementalX a good one. Easy flashing process with AROMA options (ability to overclock)!
No such thing as best, just flash a few and see what you feel brings you the best performance
Hi, i am in the same case of you, i have flashed "simpleGX 1.11 kernel" to have performance and a really good battery life. And yes, it is very smooth and i stay 3 days with my battery charge..! for me it is a very good kernel for the moment. i think to try blue spark kernel but for the moment i am happy with SimpleGX kernel...
brunsman6229 said:
Hi, i am in the same case of you, i have flashed "simpleGX 1.11 kernel" to have performance and a really good battery life. And yes, it is very smooth and i stay 3 days with my battery charge..! for me it is a very good kernel for the moment. i think to try blue spark kernel but for the moment i am happy with SimpleGX kernel...
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3days?? may be very light to moderate use?
Blu Spark is designed for performance. Boeffla for stability and Franco to extend battery life. Usually kernels are designed to provide something different than the stock kernel and the description at the top of the thread for the kernel should give you an idea of what the dev was trying to do. I honestly wouldn't recommend ElementalEx. It's a very vanilla kernel that is available for almost every device but they don't do much to optimize the kernel for individual phones. I use Blu Spark. Personally I think you are better off with kernels that are made for stock OOS.
crisisbuster said:
3days?? may be very light to moderate use?
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most 2 days and 20 hours of battery... with 6hours of screen time..
rickysidhu_ said:
No such thing as best, just flash a few and see what you feel brings you the best performance
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worst answer ever.
I did unlock/root/flash roms on 30-35 devices, for friends/family and myself.
And even if XDA members do not like ''best rom/kernel'' threads, its very usefull for a quick search, because i.e. my friend want simply a stable rom and I don't want to test every roms or read the thread's 200 pages.
Wihout pointing the ''best rom/kernel'' you might maybe help by pointing the cons and pros .
Here my reply for this thread :
After reading the Franco XDA interview, he was pointing the fact that there's not much work to do on kernel in general, because they are out-of-the box already good.
My first device was a desireZ, with froyo 2.2, back in the days, kernel works was badass, and make huge changes to the devices, but now, I agree that there's not much difference, at least for now, since this OP5 is crazy fast.
I do use Franco kernel, as per Franco's thread, he's stating better battery life. well, hard to tell , since he won't achieve 125% better battery life... It might go around 10%. Which is good, but hard to tell on day to day usage, since 10% is about my usgae precision time if I compare all my usage over each days.
So far so good, no cons.
oVeRdOsE. said:
worst answer ever.
I did unlock/root/flash roms on 30-35 devices, for friends/family and myself.
And even if XDA members do not like ''best rom/kernel'' threads, its very usefull for a quick search, because i.e. my friend want simply a stable rom and I don't want to test every roms or read the thread's 200 pages.
Wihout pointing the ''best rom/kernel'' you might maybe help by pointing the cons and pros .
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Worst answer ever? I'll admit I could have shared my setup for OP to try as well, but other than that, "worst answer ever" is a bit dramatic.
XDA members don't like the "best ROM/Kernel" threads because of my original point, there really isn't a 'best', it is subjective to your needs/usage. A kernel I find to be an absolute beast in performance can end up being mediocre at best to you. And again, that all boils down to each user's unique usage.
Telling a user what works best for you isn't going to be as good as the user trying it out for themselves; getting that first-hand experience with a certain kernel will give that user a much better idea, and that's why I said flash a few and see what they like best (no need to flash every single one or read through 200 pages...).
Like I said, I admit I could have shared my ROM/Kernel combo originally to give OP a starting point, but that doesn't take away from my main point(s).
Anyway, I don't mean to get into a whole debate about this with you, a handful of users have already responded and hopefully OP has found a kernel they prefer.
For what it's worth, I've used both Lightning and Blu_Spark, both have provided me with excellent performance and battery life (On PureFusion).
Hello, I know the choice is personal and regarding my own needs in terms of performance, battery etc. , but i'd like to know which kernel you are using, why etc.
I am not very good at seeing performance difference between 2 kernels and your feedback is often great to hear
Which one for you is the most user friendly with features like color calibration, vibration strength (things with GUI you know i don't care about scheduler or whatever)
I think imma settle down on No Limits OOS Rom, which offers a large choice of kernels...
Thank you in advance :')
You will never ever get a proper answer for this question Every kernel has its own characteristics and features, so try yourself and determine which one fits best for you
Going to have to go with the fact that this thread has been made countless times and you never get a definite answer. If you want a truthful opinion, stick with stock. It was designed for your device specifically. Especially in the case of OnePlus devices, they devise the kernel to fit with Oxygen OS. I stick with stock kernel and stock rom because the roms out there are bogus. Theres usually something the dev has done to their rom to disrupt continuity and stabilization especially with google apps and services. Always trying to "debloat" the phone is not a good idea. Letting the phone run its course is a much better way to go because it will adjust to what you actually use. Changing your kernel doesn't do very much for you. In my experience it is always worse. I havent changed the way i use a smartphone since the day i bought one and every kernel ive ever been on has never POSITIVELY affected: 1. Performance 2. Stability 3. Battery life 4. Speed of service 5. internet speed 6. Screen on time 7. Longevity
The claims that they do something for those things is typically a red flag for me. Every time i used franco kernel for example, my internet would cut out a lot and on some occasions YouTube would work for a few videos then not at all until i restarted my phone. On stock kernel, my phone never has these malfunctions but no matter which release on the 3t and the 5 now with his kernel my google stuff would constantly break down or my internet would die until i restarted or i would be permanently stuck on H+ until reboot. Just something annoying like that. And no i did not install this wrong or anything. Its not like you really can with how TWRP works. If the phone turns on then whatever goes wrong is on that rom and that kernel and theyre very unstable beasts.
TL;DR
Always stick with stock. It is built for YOUR device specifically. Don't debloat, disable. Stock kernel is always superior and in the case of OnePlus you have additional doze options in its built in settings. Don't run doze apps either btw. Let your system manage itself you'll find it does a damn fine job.
This question takes a little research to answer, some reading specifically. By seeing the features and commits present in each kernel offered, you'll be able to see where the focus of the dev is. All devs have different things in mind, some will lean towards extending battery longevity, whereas others will prefer a smooth UI and gaming performance, because after all, the processor in this phone can deliver good stuff for all these different leanings.
Anyway, go read a little, see through the devs lens and take your best pick.
My final and subjective opinion? Lightning kernel, blu spark, flash, elementalX, Franco...in no respective order.
I also have a lot of respect for the guys in RenderZenith. Building EAS from nothing is no short of a benchmark, and that kernel is really good as well.
Or as the gentleman above, stay in stock, it was built from scratch by the manufacturer for this device only and no other.