Database Users

How will a custom kernel benefit me

What will a custom kernel do for me. I have been thinking about rooting but I do not want to flash a ROM. I am really loving stock. How will a kernel benefit me. I heard they have something to do with battery. How is that?
Sent from my Nexus 4 using xda app-developers app

With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2

italia0101 said:
With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2
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Click to collapse
Thank you. Sounds pretty helpful for battery. Do you recommend any kernels?

Ballastatuz said:
Thank you. Sounds pretty helpful for battery. Do you recommend any kernels?
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I'd go with franco's kernel for now.
All of them are new and may have bugs, but franco is a longtime kernel developer and he's the least likely to do stupid stuff or claim features that actually hurt performance or are just placebos.

Franco's kernels seem good. I use it on my N7, but I just wouldn't use it yet as he's working blind. Faux has some amazing battery saving kernels. Mathkid's kernels pretty well as well, I used to use his on the Nexus S back in the day.
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Ranguvar said:
I'd go with franco's kernel for now.
All of them are new and may have bugs, but franco is a longtime kernel developer and he's the least likely to do stupid stuff or claim features that actually hurt performance or are just placebos.
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I'd be careful about recommending a kernel where the developer is doing so blindly. Honestly its very irresponsible. Unless he's got a device that's 99.9% identical, i cant recommended it.
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italia0101 said:
With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2
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Click to collapse
Under clock can be done on a stock kernel just needs root. Custom kernel allows over clock doubt its needed though CPU is fast enough.
Different governors can be used on stock too but custom kernels may offer extra ones like smartass etc.
They may also add things like NTFS cifs run etc not available in stock.
Using Motleys kernel just now too soon to comment on improvements.
Sent from my Nexus 4 using Tapatalk 2

If stock is working for you, there's no reason to flash another, unless you have the itch.
The stock kernel is great, and undervolting is more trouble than it's worth if you're starting from scratch, unless tinkering with voltages is your thing, and there's zero need to overclock the N4 CPU or GPU IMO. There aren't a ton of options, yet, either. 3.4 is pretty young yet.

eep2378 said:
I'd be careful about recommending a kernel where the developer is doing so blindly. Honestly its very irresponsible. Unless he's got a device that's 99.9% identical, i cant recommended it.
Sent from my Nexus 4 using xda app-developers app
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As someone who is using Franco's kernel at the moment, I can recommend it strongly. It's running very well :good:

Ngo93 said:
As someone who is using Franco's kernel at the moment, I can recommend it strongly. It's running very well :good:
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Click to collapse
Agree. Franco is amazing and once he actually has the device he will only improve.

Yeah -- that was my other experience, I'm using franco's kernel and have been since day one.
Quite stable at least so far, no crazy changes.

Recommendation for rom?

I've been looking through some threads but I figure I ask the experienced. I'm looking for good battery life, little bugs, and for some reason nav bar customization like nav bar color etc. Any suggestion would be appreciated. Also is it just me or you cant add a fourth nav button yet as a customization to the nexus 4?

Well Use PA rom in original Dev section with matrix Kernel....also use No frills apps to control cpu...but when the Mods see this thread they might close it lol...but hopefully I could help before they get here ...

CM10.1 + Franco
or Xylon + Franco

AOKP for insane level of customisation

Personally waiting for AOKP milestone.
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Currently using Xylons rom with Faux's kernel with his paid app and everything is working fine with great battery life.

CM10.1 + Faux's kernel (beta 4) + Faux Control app has been great for me.

Im also using CM10.1 + Faux Kernel

Im using the unofficial aokp Dec. 5th build and wow pretty bad baterry life. I'm down to 60% and only been about 3 hours moderate to light usage. I want to try 10.1 but would miss my 4th nav button and color customization but heck if I can get better battery life. I'm going to try the 10.1. Or does xylon give you better battery life? Its a toss up between those 2.

Aokp and Franco kernel, see my signature for links
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monzttr said:
CM10.1 + Faux's kernel (beta 4) + Faux Control app has been great for me.
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WHere do you get beta 4 from?

How stable is pa? I'm really Curios. I miss it from my galaxy nexus
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[Q] Which is the best kernel?

What is the best kernel overall?
The best kernel for battery improvement?
Best kernel for performance?
and the best kernel for gaming?
.....and GO!

Stock.
Sent from my Nexus 7 using xda premium

Based on my experience. For overall excellent gaming performance with good enough battery performance, I suggest M-Kernel a25 or a27. And to over clock your device after installing the kernel, use Trickster Mod from play store.
Sent from my Nexus 7 using xda app-developers app

I'd like to recommend u to see the following thread.
[GUIDE] *NEW* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tests)
http://forum.xda-developers.com/showthread.php?p=31620793

theres no best kernel, they are all good. theres only whats best for your and your devices needs. evrybody is going to say that the best kernel is the one that they use, no one is going to say that they use the worst.

simms22 said:
theres no best kernel, they are all good. theres only whats best for your and your devices needs. evrybody is going to say that the best kernel is the one that they use, no one is going to say that they use the worst.
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Well I base it on most popular. If its popular it means its good and works most of the time. Maybe I should've used better wording?
Sent from my Nexus 7 using Tapatalk HD

jesus359 said:
Well I base it on most popular. If its popular it means its good and works most of the time. Maybe I should've used better wording?
Sent from my Nexus 7 using Tapatalk HD
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popular doesnt mean good. try out a few, find what your device likes. every device is different and reacts differently with each kernel.

k1silver said:
I'd like to recommend u to see the following thread.
[GUIDE] *NEW* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tests)
http://forum.xda-developers.com/showthread.php?p=31620793
Click to expand...
Click to collapse
Yes you can read there, OP just updated the score. If you want to try, try trinity for best performance, m kernel for best overall. I'm using Mkernel now, really good kernel. No problem so far.
Sent from my Nexus 7 using xda premium

I get about 10-11ish hours "screen on" with light use on franco kernel #38

Motley kernel

i tried
Motley kernel,
Franco kernel
Trinity Kernel
Trinity is the fastest if you tweak it good..
but on the downside the most glitch..
but Morfic just released two updates in two days...
so theyre fixing it.
So im back with Trinity Kernel.
Its good..
and the only Kernel i find that you can change GPU speed, ofcourse Using
the glitchy Trinity Toolbox

I love Franco.Kernel R31. Battery life is great and performance is good as well. R38 is the newest and great, but I feel performance is a bit lacking on 38.
Sent from my Nexus 7 using Tapatalk HD

Jomari29 said:
i tried
Motley kernel,
Franco kernel
Trinity Kernel
Trinity is the fastest if you tweak it good..
but on the downside the most glitch..
but Morfic just released two updates in two days...
so theyre fixing it.
So im back with Trinity Kernel.
Its good..
and the only Kernel i find that you can change GPU speed, ofcourse Using
the glitchy Trinity Toolbox
Click to expand...
Click to collapse
Did he fix unplug usb otg reboot issue yet?
Sent from my LT18i using xda premium

Closed, try them and see

brought new nexus 4 and have issue

yesterday i brought new nexus 4 after trading my galaxy s3
i rooted my nexus installed recovery
flashed franko kernel
and installed paranoid rom
now the phone heats up too much even on normal whatsapp chatting
i tried to underclock it from setcpu but still heating is there
later i thought may b my phone doesnt handle paranoid or franco kernal
then i flashed modaco rom
but unfortunately swipe to wake doesnt work
i have still not tested the heating problem
can anyone guide me on setcpu setting or which rom / kernal to try
i am more interested in swipe to wake function

I have similar issues with a lot of Franco releases, some apps like fun run make the phone super hot. I use Motleys kernel, overall way snappier, and battery life is just as good. It's in android original development. As far as rom I use cm10 kang one by trailblazers that's built from linaro tool chain with bionic commits, it is faster than stock cm10 for sure. Try it, both kernel and ROM are built on linaro, good combo.
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air2k57 said:
i have similar issues with a lot of franco releases, some apps like fun run make the phone super hot. I use motleys kernel, overall way snappier, and battery life is just as good. It's in android original development. As far as rom i use cm10 kang one by trailblazers that's built from linaro tool chain with bionic commits, it is faster than stock cm10 for sure. Try it, both kernel and rom are built on linaro, good combo.
Sent from my nexus 4 using xda app-developers app
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thanks a lot
will this support slide to wake mod ???

Did you try UVing a little?
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aarif_ziaee said:
thanks a lot
will this support slide to wake mod ???
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I know that it did, a lot of odd issues have been happening, so he took it out I'm pretty sure it is back in though. If not, I know matrix kernel has it.
Sent from my Nexus 4 using xda app-developers app

[Q] Kernel issues

Hi
First post. Will try not to look the idiot or ask what has already been asked. Here goes, I am unable to find a kernel that actually improves my phone, i currently have the following -
Nexus 4
ROM - PSX V1
Moto x mod (great addition)
Stock kernel
I have tried two or three kernels including the new Trinity one which gave me a worse performance. Would someone point me in the right direction?
Could i also say a big thanks to PSX developer for a great ROM.
Regards.

Have you tried Franco...?
Sent from my Nexus 4 using Tapatalk

did you try adjusting settings to your needs? considering the trinity kernel maxes at 1026mhz by default, until you adjust the cpu speed yourself.

So if I reinstalled trinity and used trickster to increase the cpu, I might get better results?
I haven't tried franco just yet.
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Right after a bit of trial and error I reckon I have cracked it.
PSX v1
Moto x
Trinity kernel
Results from antutu
22400
Results from Quadrant
9500
Up from 16500 and 6300.
Sent from my Nexus 4 using XDA Premium HD app

Improvement is a subjective in this context. In what way? Faster? More features? Better battery life? Better sound quality? Better color? Smoother?
Benchmark means nothing. It is possible to apply the Samsung's dalvik cheat patch to your rom which will increase your benchmark score but yield no real world performance. With some settings you might get great benchmark, but the phone might get hot with poor battery life. Moreover, most benchmark programs do not tell the real story about performance. Antutu and Geekbench doesn't even work correctly with 4.4 and ART. iOS7 might get good scores sunspider javascript, but there are times when Android web performance outright beat it.
This thread falls in the category of "What is the best kernel/rom?" which is against XDA rules so I can;t help you. Research each kernel and read about its features and users feedback and find what is right for you. A lot of time stock kernel will give the best stability and battery life.
I use kernels mainly for features. There are other bigger factors about the operating system that determine battery life and performance.

What I wanted was faster and this certainly is faster. So I'm happy. Thanks for all your help.
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Rlumby said:
What I wanted was faster and this certainly is faster. So I'm happy. Thanks for all your help.
Sent from my Nexus 4 using XDA Premium HD app
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Use latest PSX rom, put phone in freezer for 1hour, set CPU to 1800MHZ performance, GPU to 533MHZ performance if possible, raise overall cpu voltage, stop all background app, run benchmark.

Rlumby said:
Right after a bit of trial and error I reckon I have cracked it.
PSX v1
Moto x
Trinity kernel
Results from antutu
22400
Results from Quadrant
9500
Up from 16500 and 6300.
Sent from my Nexus 4 using XDA Premium HD app
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Click to collapse
there you go