[KERNEL][4.4.2][WIP][SGP311/312]UnleaZhed XTZ Kernel v0.2 - Xperia Tablet Z Android Development

Hello! This is my first kernel, The UnleaZhed XTZ Kernel. I'm a noob in developing a kernel, so some bugs may be found in this kernel and I may not be able to fix them! One more important thing, this kernel uses the sources from some developers and I'm here to present my greatest thanks to everyone of them!
FLASH AT YOUR OWN RISK!!​
UnleaZhed XTZ Kernel
Requirements:
4.4.2 Xperia Tablet Z Wi-Fi version (SGP311/312)
Unlocked bootloader
Fastboot driver installed computer
Features:
CPU overclock up to 1836MHz
CPU UV by 100 default
CPU UV control
GPU overclock up to 450MHz (due to some bandwidth problem)
Use auto CPU hotplug instead of MP-Decision
Some minor things
!!recovery has resolution problem ATM!!
Click to expand...
Click to collapse
Installation:
1. Make your Tablet Z in fastboot mode
2. On your computer, open cmd and navigate to the location of kernel
3. Type "fastboot flash boot Kernel_name.img
4. Type "fastboot reboot"
5. Enjoy!
Downloads:
UnleaZhed XTZ v0.1
UnleaZhed XTZ v0.1.1
UnleaZhed XTZ v0.2
Credit:
DoomLoRD
thalamus
Sony
Faux123
Source:
My Github

Nice try but do you have any plans for an aosp kernel?i like overclock and the extra features but it is too tough to say goodbye to pac rom

pangiotis24 said:
Nice try but do you have any plans for an aosp kernel?i like overclock and the extra features but it is too tough to say goodbye to pac rom
Click to expand...
Click to collapse
Will do but it may be done in the next month, Thanks for your suggestion.

First of all THANK YOU for spending your time on this and sharing your result with us!
Just flashed the kernel! Good news...nothing is bricked
CPU Spy Plus indeed shows 1836 Mhz used! I did´t do anything for that.
You might re-think this. Using 1512Mhz instead by default and let the users choose that high speed CPU mode themselves as it may not be stable on all devices.
That 324Mhz added is a huge step...there is no step in between possible?
What about voltages. Did you modify anything? Is the voltage raised to achieve the high cpu frequency? Please post some more information about what happens here...
In fact I´m just running Antutu to see general stability on my device.
VERY BAD score. Before your kenel there were 20300 points. Now with OC only 19746.
=====================================================================
EDIT: Just recognized.... several questions are being answered by Antutu CPU Master.
1512 IS USED by default!
1620Mhz and 1728 Mhz are there to choose and of course finally the 1836Mhz.
Scaling is interactive by default (changed to my fav ondemand)
I/O Scheduler is cfq by default (changed to my fav noop)
Antutu Score @ 1836Mhz: 16077Mhz ???
Lower than without OC? Needs retesting (14230 point when setting max to 1836Mhz and Min to 1512Mhz(!!!???)...maybe the benchmark is wrong...Will give it some time to see if I myself feel a speedup.
After Restart Antutu Score ends up @ 19761 points...not bad. but clearyl not enough looking at the massice OC done. REBOOT! Tab just rebooted! So 1836Mhz is not stable at mine! Trying 1728Mhz now instead.
18139 points....this kernel lacks some serious power if we can believe the scores of antutu. This is a V0.1 so nothing to worry too soon. You´ll make it find it´s power
Switched back to kernel from pulser_g2 (http://forum.xda-developers.com/showthread.php?t=2444452) and 19908 points without any OC! You may look into it.
But please answer the other questiones I wasn´t able to clear myself.
Greetings
Rodger

DJ-Tumor said:
First of all THANK YOU for spending your time on this and sharing your result with us!
Just flashed the kernel! Good news...nothing is bricked
CPU Spy Plus indeed shows 1836 Mhz used! I did´t do anything for that.
You might re-think this. Using 1512Mhz instead by default and let the users choose that high speed CPU mode themselves as it may not be stable on all devices.
That 324Mhz added is a huge step...there is no step in between possible?
What about voltages. Did you modify anything? Is the voltage raised to achieve the high cpu frequency? Please post some more information about what happens here...
In fact I´m just running Antutu to see general stability on my device.
VERY BAD score. Before your kenel there were 20300 points. Now with OC only 19746.
=====================================================================
EDIT: Just recognized.... several questions are being answered by Antutu CPU Master.
1512 IS USED by default!
1620Mhz and 1728 Mhz are there to choose and of course finally the 1836Mhz.
Scaling is interactive by default (changed to my fav ondemand)
I/O Scheduler is cfq by default (changed to my fav noop)
Antutu Score @ 1836Mhz: 16077Mhz ???
Lower than without OC? Needs retesting (14230 point when setting max to 1836Mhz and Min to 1512Mhz(!!!???)...maybe the benchmark is wrong...Will give it some time to see if I myself feel a speedup.
After Restart Antutu Score ends up @ 19761 points...not bad. but clearyl not enough looking at the massice OC done. REBOOT! Tab just rebooted! So 1836Mhz is not stable at mine! Trying 1728Mhz now instead.
18139 points....this kernel lacks some serious power if we can believe the scores of antutu. This is a V0.1 so nothing to worry too soon. You´ll make it find it´s power
Switched back to kernel from pulser_g2 (http://forum.xda-developers.com/showthread.php?t=2444452) and 19908 points without any OC! You may look into it.
But please answer the other questiones I wasn´t able to clear myself.
Greetings
Rodger
Click to expand...
Click to collapse
Sorry for my late,
I've tested Antutu with 1512MHz and 1836MHz. For my Tablet Z, I got ~20000 (1512MHz) and ~23000 (1836MHz).
My Tablet Z has fast binning CPU. Can you please tell me which binning your CPU is? Thank you!

hard to tell...did taht thing in Terminal emulator....it tells me "1".
Not fast or slow or anything...

DJ-Tumor said:
First of all THANK YOU for spending your time on this and sharing your result with us!
Just flashed the kernel! Good news...nothing is bricked
CPU Spy Plus indeed shows 1836 Mhz used! I did´t do anything for that.
You might re-think this. Using 1512Mhz instead by default and let the users choose that high speed CPU mode themselves as it may not be stable on all devices.
That 324Mhz added is a huge step...there is no step in between possible?
What about voltages. Did you modify anything? Is the voltage raised to achieve the high cpu frequency? Please post some more information about what happens here...
In fact I´m just running Antutu to see general stability on my device.
VERY BAD score. Before your kenel there were 20300 points. Now with OC only 19746.
=====================================================================
EDIT: Just recognized.... several questions are being answered by Antutu CPU Master.
1512 IS USED by default!
1620Mhz and 1728 Mhz are there to choose and of course finally the 1836Mhz.
Scaling is interactive by default (changed to my fav ondemand)
I/O Scheduler is cfq by default (changed to my fav noop)
Antutu Score @ 1836Mhz: 16077Mhz ???
Lower than without OC? Needs retesting (14230 point when setting max to 1836Mhz and Min to 1512Mhz(!!!???)...maybe the benchmark is wrong...Will give it some time to see if I myself feel a speedup.
After Restart Antutu Score ends up @ 19761 points...not bad. but clearyl not enough looking at the massice OC done. REBOOT! Tab just rebooted! So 1836Mhz is not stable at mine! Trying 1728Mhz now instead.
18139 points....this kernel lacks some serious power if we can believe the scores of antutu. This is a V0.1 so nothing to worry too soon. You´ll make it find it´s power
Switched back to kernel from pulser_g2 (http://forum.xda-developers.com/showthread.php?t=2444452) and 19908 points without any OC! You may look into it.
But please answer the other questiones I wasn´t able to clear myself.
Greetings
Rodger
Click to expand...
Click to collapse
How is the battery life?
Sent from my SGP311 using XDA Premium 4 mobile app

Destroyedbeauty said:
How is the battery life?
Sent from my SGP311 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Don´t know....after the disastrous performance of the first release I of course switched back to stock.
Now there is the new version which does not cut performance in stock mode.
I´ll OC now to 1728 Mhz and see how it performs with that....battery life is not really good with stock so if you are already asking...FORGET ABOUT alternative kernels not optimized for battery.
That is why I don´t use CM oder AOKP on my Note1. I just eats the battery for breakfast....
OK OC just seemed to scale...20300 points (ca. 19300 at stock speed)...trying 1836 Mhz now.
17389 points....clear drawback....possibly because my device seems to have a bad CPU from what I´ve learned....wanted to use the 17xx Mhz anyway....oops....device just rebooted....my device just isn´t capable of the max cpu setting. :crying:
Anyway the working 1728 Mhz working is great news!
Will give it further testing...

I have two APQ8064 devices, Nexus 4 and Tablet Z. Nexus 4 is 0 (slow), it will reboot sometimes even on [email protected], the Antutu would force close and red light of death would happen if you ignore it and attempt to run again. While my Tablet Z is 2 (fast), this can run at [email protected] and got 23XXX in Antutu.
I don't have an idea which frequency can the 1 (nominal) APQ8064 clock at, but I think [email protected] will be OK. Also, keep eyes on the CPU float-point section in Antutu. At 1512Mhz, it is around 2000. At 1836MHz, it is around 2200. If this drop lower, just pull up the voltage BUT NOT TOO MUCH!!!
Sent from my SGP312 using xda app-developers app

Raising voltage is not an option to me. But anyway...which app do you use for that on tablet Z?
What App do you use for cou control?
I use No-frills. Do you change "interactive" and or "cfq"?
Numbers right after reboot and stopping some unused apps...just stock apps running...
2729 / 930 / 1112 / 1050 / 511 / 927 / 1436 / 5278 / 696 / 600
>>> 15269 points @ stock !!!
switching back to stock....

DJ-Tumor said:
Raising voltage is not an option to me. But anyway...which app do you use for that on tablet Z?
What App do you use for cou control?
I use No-frills. Do you change "interactive" and or "cfq"?
Click to expand...
Click to collapse
I would like to know this as well. Also, how do you check to see which processor you have? (0,1,2; slow, nominal, fast)
Sent from my Xperia Tablet Z

Spartoi said:
I would like to know this as well. Also, how do check to see which processor you have? (0,1,2; slow, nominal, fast)
Sent from my Xperia Tablet Z
Click to expand...
Click to collapse
What is the terminal command to find out? I also considered custom retelling to add some processing oomph. On a per app basis, but reading this... Stock SGP311 on 4.2.2 is chugging fine just north of 20000 points on Antutu. Can we compare Versions? Mine is 3.3.1. I faintly recall reading they mixed up some benchmarking internals because some corporations found loopholes to cheat / inflate scores on new to market devices, maybe that's the discrepancy there?
Another wild thought, could there maybe be, aside from different CPU Models, different kinds of cache / memory scattered through the devices? Would not be the first time a sub par. Cache/Memory bottleneck severely strangled a nominally and factually quicker CPU into much lower overall results. Much depends on weighting within Antutu

Man, what happened with your kernel? We need some stock kernels for 4.3
Sent from my SGP312 using XDA Premium 4 mobile app

Related

[Q] Overclocking the Tab

Hey does someone know the overclock configuration that was posted on the Overcome page once? I'm running on Overcome 4.1 with the belonging Kernel which allows me to get to 1.6ghz (theoretically) and I'd like to overclock to 1.2ghz.
I'd be very grateful if you could help me
Edit: I found this http://forum.xda-developers.com/showthread.php?t=1036020 but does this guide also apply to Overcome 4.1?
Just use Voltage Control or SetCPU. It's really not that hard at all. Just be careful with your voltages-overvolting will eat your battery more but may allow you to reach higher frequencies, and undervolting may get you better battery life but may make your tab unstable.
As a reference, I have my Tab running at 100-1.4 with smartassv2 and stock voltages on the Overcome 4.0 kernel.
Sent from my SCH-I510 using xda premium
thanks ;-) but which sheduler do you use?
for those who also have problems with overclocking and for
the newbies (like me =-D) I found this page which describes the usage of shedulers
and governors http://forum.xda-developers.com/showthread.php?p=19846297
IO Scheduler: CFQ
Governor: Smartassv2
At least that's what I use on my phone. I just left everything alone on my tab.
Sent from my SCH-I510 using xda premium
thanks, you helped me a lot ;-)
I'm using Voltage Control on 1.3ghz with stock voltages on smartassv2 and deadline and it runs pretty stable
Thanks, useful tip for me too.
I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc
that's exactly the same that I did =-D=-D=-D
That's pretty much what I have. OP, sorry I couldn't answer your PM, my tab is currently bricked and I haven't had the chance to recover it.
Sent from my SCH-I510 using xda premium
yea I have time =-D that's not so important, just make sure your tab runs again ;-)
phlooke said:
I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc
Click to expand...
Click to collapse
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.
Joe Blough said:
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.
Click to expand...
Click to collapse
Haha, I did check that option when I foolishly set the OC max to 1.6GHz
...I was just able to uninstall between one of the many lopping reboots
Anyway all, sorted now. In fact I have reverted to stock voltage for 1GHz up to 1.3GHz because playing Trial Xtreme2 would cause a reboot when I'd exited the game - seem's all ok now *touches wood*

Undervolt/Overclock Captivate...

What kind of success/failure are people having with overclocking and undervolting?
I'm doing this through ROM Toolbox Pro. Is there a better way? I'm a n00b with some of this stuff.
I have the phone overclocked to 1200mhz and all cpu levels are undervolted by 100mV.
Im doing so to get more performance, and better battery life. Just wondering what settings everyone else is using.
Also I'm using CM 10.1, with the BlueMint Theme.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
DR650SE said:
Just wondering what settings everyone else is using.
Click to expand...
Click to collapse
Every phone has different limits. It's just like PC overclocking, no two CPU/MB/RAM combos are exactly the same. In general most of Captivates will handle 1200 step OC with default voltages. Not too many will handle 120% live OC though. It doesn't matter what tool you use to OC. All tools try to play with the same kernel settings. In my experience UV saves very little battery but increases significantly the chances to get stability issues. This is why I never play with UV. My particular phone can do 1400 step OC or 1200 live OC with 1350mV. I run it on 1200 step OC @ default. Also, keep in mind that different ROMs/kernels give different OC results.
RE: undervolt
I agree with Val D that undervolting will not show any significant benefits. Overvolting has helped me with stability while overclocking. I use the free Voltage Control app for voltages, or the free NStools app. Rom Toolbox is a great app too- I use it for many other things- stick with what works for you. Currently I am running at 1200Mhz step, at 120% Live OverClock to get CPU up to 1440Mhz, and ARM voltage of 1350mV at that 1200Mhz step. Rock solid. Battery life suffers a bit, but I run this way for gaming. Day-to-day regular usage I just set to 1400Mhz step and no Live OC, default voltages. I have run fine in the past at 1500Mhz, no Live OC. Overclocking the CPU tends to make my phone a bit snappier and more responsive. A big battery drain that affects my phone is an app such as Gmail running in the background, or leaving wifi enabled when not in use. Setting the phone to Airplane mode has been a big battery helper too (I do not make any voice calls on this phone anymore). Governor and scheduler setting can also have a big effect on battery life. I searched for this post I made a while back that linked to two great articles on studies of battery life and voltages, and ended up reading through them again:
http://forum.xda-developers.com/showpost.php?p=28141250&postcount=1194
Great information. Edit: just figured out how to link articles in my signature.
Thanks guys. I know each one over clocks differently. Just looking for some rough outlines. Thanks for the links. I'll be reading up on those. I have extensive computer over clocking experience, but on e phone its a whole new ball game. Basically trying to make this phone last longer.
I'll have to learn what live OCing is vs step OCing.
Thanks again!
Sent from my GT-P3113 using Tapatalk HD
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
PxGold said:
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
Click to expand...
Click to collapse
Awesome. Didn't even realize that as there. I've been using ROM Toolbox to OC to 1200MHz.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
overclocking to 1200 mhz will made any difference ?
Klitoni said:
overclocking to 1200 mhz will made any difference ?
Click to expand...
Click to collapse
I really didn't notice much of a difference in speed or responsiveness using CM 10.1.

[ADVICES] Recommanded Voltages with Custom Kernel

Hi Everybody!
I've installed ElementaryX Kernel and like a lot of people i'm trying to increase battery life by undervoltage the CPU But The question is not how to do it because there is a lot of guides about the subject.
Undervolting test can take long long time before finding the good one so my question is if you have a custom kernel, what voltage did you configure?
Cause on the guides that I found they just tell that if the phone is unstable or reboot alone that's a sign that the CPU is not enough powered. Do you know other signs?
I've choose 750 Mv during the Aroma installer of ElementaryX but I think I need Kernel Tuner to modifiy the voltage no? For the moment I'm at 850mv from 384Mhz to 702 Mhz.
What's your recommanded voltages for the HTC one?
Thanks a lot for your Help !
Kinoal said:
Hi Everybody!
I've installed ElementaryX Kernel and like a lot of people i'm trying to increase battery life by undervoltage the CPU But The question is not how to do it because there is a lot of guides about the subject.
Undervolting test can take long long time before finding the good one so my question is if you have a custom kernel, what voltage did you configure?
Cause on the guides that I found they just tell that if the phone is unstable or reboot alone that's a sign that the CPU is not enough powered. Do you know other signs?
I've choose 750 Mv during the Aroma installer of ElementaryX but I think I need Kernel Tuner to modifiy the voltage no? For the moment I'm at 850mv from 384Mhz to 702 Mhz.
What's your recommanded voltages for the HTC one?
Thanks a lot for your Help !
Click to expand...
Click to collapse
No idea?
Kinoal said:
No idea?
Click to expand...
Click to collapse
Search in or try asking for recommended settings in the ElementalX thread.
The recommended voltages are the stock ones.
If you're lucky, you can undervolt, but each device is different. Instability is the only way to tell.
I'm not sure why you are expecting different answers.
Mine starts at 750mV for 384MHz and increases 25mV for each step. I have no issues with it.
For more thorough testing, set all cores to the same min and max freq and run some benchmarks or something for half an hour or so. Lower the voltages a bit and run the benchmarks again. Repeat until it's no longer stable. Raise the freq to the next step and repeat the tests. Use my voltages as a guideline. Happy testing
Sent from my HTC One using XDA Premium HD app

PimpYourKernel!! :D LG p880

Hi guys!! I was thinking about opening a thread where everyone can specify what's the better kernel setup, according to her/his own necessities, and share that configuration with all p880 community. Also, it can be submitted the relationship between the kernel and the ROM an user is running on the device, to compare performances and make each other more conscious about kernel tweaking. I think it's better to open it in general section, so everyone can write, without being scared by submitting something not related to developing.
This thread won't to be in any way a substitute of the "Battery life!" thread, so if anyone wants to post specifical results or screenshots about battery duration, please post them here:
http://forum.xda-developers.com/showthread.php?t=2478514
Said that, the idea is to post a message like this:
KERNEL: name of the kernel you are using
ROM: the name of the ROM you are running
SETTINGS: the kind of settings you applied to your kernel (example: Governor=interactive, Scheduler=Sio, Multicore Power Saving=2,CPUquiet=balanced, LP Core uV=-15 mV, MPU uC=+20, and so on)
GOOD: the benefits you experienced with your configuration (the more specific possible)
BAD: the badness you experienced with your configuration
Of course, if the thread begins to grow up, is recommended to read everything before posting a configuration too much similar to another which have been posted yet.
If you think this is a good idea, press thanks, if you want, and let's begin posting, otherwise report it to moderators, like @laufersteppenwolf, and they will close this thread as soon as possible
If someone like @JoinTheRealms is interested to, I'd appreciate very much to create a section dedicated to the scripts, as a second post of the thread, maintained and refreshed by the author.. Let me know, and take your own space here, if you think it's good for you!
So, I'm starting posting my own last configurations:
1)
KERNEL: iodak v9.95
ROM: Beanstalk 4.4.2
SETTINGS: Governor=interactive, Scheduler=Sio, CPU max speed undercloked to 1300 Mhz, CPU max screen off frequency=370 Mhz, Multicore Power Saving=1 ,CPUquiet=balanced, LP Core uV=-30 mV all frequencies, MPU uV=-75 mV all frequencies
GOOD: this configuration improve battery life, without decreasing overall smoothness - suggested to the users who don't mainly use the phone for hard gaming and want to find a compromise between battery durability and overall performance
BAD: some little lags, here and there, randomly happen - I suggest to apply underclock, before changing cpu freq voltage, because this configuration is good for 1300 Mhz undercloked device, but it may cause system freezes on some cpu variants, if you set cpu clock up to 1600-1700 Mhz (tested)
2)
KERNEL: iodak v10
ROM: Beanstalk 4.4.4
SETTINGS: Governor=interactive, Scheduler=Sio, CPU max speed undercloked to 1300 Mhz, CPU max screen off frequency=620 Mhz, Multicore Power Saving=1 ,CPUquiet=balanced, LP Core uV=-100 mV all frequencies, MPU uV=-100 mV all frequencies
This configuration is very battery friendly, more than the last one I was using on iodak v9.95. Nothing is slowing down, btw
@JoinTheRealms reserve a post to yourself, if you liked my idea to dedicate some space to scripts explaining
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
Saved!
Lol, I'm using almost the same config.
Kernel: Iodak 9.9.5
Rom: Beanstalk 4.4.2
Settings: I haven't changed anything
Good: Very fluid and stable
Bad: battery life, Antutu 3D test score
Sent from my LG-P880 using xda app-developers app
Kernel: 9.95
Rom: CM11 official
Settings: Max Frequency 1150 Mhz Cpu governor:interactive
mpu undervolt -100 on every freq (cpu variant 2, some hangs while waking the smartphone and I need to tap on the screen sometimes, if I press the power button the device won't wake up anymore until I restart it).
Congestion: westwood
Cpu quiet: runnable
Cpu max screen off freq: 475 Mhz
Good: less heat, more battery life, smooth experience
Bad: If I put 1300 Mhz as max freq the battery life will decrease.. And without 1300 Mhz as max freq I feel like cutting this smartphone's cpu potential.
Still bad battery life even with these tweaks, still disappointed, but so far this is my best configuration with Cm11 official.
peppethustra said:
@JoinTheRealms reserve a post to yourself, if you liked my idea to dedicate some space to scripts explaining
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
Click to expand...
Click to collapse
The scripts i posted earlier, really shouldn't be take too seriously, mainly because they are written for ubuntu and require input. But when i get some time ill modify my post and give some examples of init.d scripts, or more specifically, the commands inside them. That should be somewhat more helpful i guess
JoinTheRealms said:
The scripts i posted earlier, really shouldn't be take too seriously, mainly because they are written for ubuntu and require input. But when i get some time ill modify my post and give some examples of init.d scripts, or more specifically, the commands inside them. That should be somewhat more helpful i guess
Click to expand...
Click to collapse
Take the time you need, the thread seems beginning to live, so we'll read your post for sure, when you will bring it to evolution!
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
Kernel: Optimus Play v2.53
Rom: CM11 official
Settings: Max frequency 1200 Mhz (sometimes I tried to put it at 1100 Mhz or even lower, 1000 Mhz, resulting in better battery life)
Congestion: cubic (since there's no westwood implementation in this kernel)
Cpu quiet: not implemented (I think it's put on runnable or balanced as standard)
Cpu governor: interactive
Multi-core battery saving: 1
Gpu frequency scaling: on
Good: awesome perfomances, the games and all the apps are very smooth and compared to the earlier configuration with iodak v9.95, this is very much better, but be aware that I'm trying to have perfomances and battery life balanced, and on iodak v9.95 I undervolted the cpu of -100mv resulting in some cases of hangs and crashes. Battery life is still good, but a bit worse than the iodak configuration.
Bad: Battery life's not very good, it goes harder on deep sleep when the display's off, iodak v9.95 is the best with deep sleep; in fact it takes a while before entering that state, it usually stays on low frequencies but it still consumes the battery.
An other aspect I noticed is that even when the smartphone is on charge, when I'm using it, it doesn't charge much, if ever it looses energy, which is explained by the very good performances of this kernel.
A small bug present in this kernel, and not in iodak, you usually need to double press the power button to wake the smartphone, but it's much better than risking to have your smartphone crashed while waking it up.
Overall: A very good kernel for performances, I don't know if it's the best but it's very good, battery life's "good" if not using the smartphone, otherwise it drains quite fast, I think faster than the undervolted configuration with iodak.
If you're looking for smoothness with games and apps I'd suggest this kernel, if you prefer battery life I'd suggest iodak more, but I remind you the hang problems on it if you decide to undervolt up to -100mv.
I tested both kernels with the same Rom and apps and use more or less, so I'm quite positive it's a good test.
I hope it helps and you can give us tips or suggestions to improve this smartphone's battery life, without losing perfomance. I think this is the thread's goal.
and yeah, every LG Optimus 4x hd possessor's dream is to have a good battery life so well, let's help each other and get the best out from this device, it's not **** yet in my opinion, it just really has a bad battery usage.
@KrisJoe Very good review! I hope many people will follow your example..comparing user's kernel usage and customizations is the better way to help everyone to find the needed configuration, and to let them make whatever they want, with their phone, on the best possible way
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
I just noticed something going back at iodak v9.95 to try peppe's configuration; on iodak v9.95 the temperature of the cpu is higher, there's a difference of at least 20° C more or less. Problem was that I went back to iodak because charging with optimus play v2.53 was a pain since instead of charging it wasn't. (Of course I mean while in use)
With iodak charging is flawless (I activated the fast charge option, which isn't present in Optimus Play).
Is it because of the fast charging option that's making the difference?
I'n trying the cpu undervolted by -75mv MPU and -30mv LPU, and it seems a bit laggier than the optimus play one, I can feel the difference just typing with the keyboard on the browser, but it's charging despite me using the smartphone.
What do you think it's the cause of the slow charge in optimus? And maybe more important thing, how is it possible that the cpu has a 20° C of difference between optimus and iodak but I keep the same frequency? I even undervolted with iodak, and in theory it should be the opposite situation, with iodak having lower temperature.
KrisJoe said:
I just noticed something going back at iodak v9.95 to try peppe's configuration; on iodak v9.95 the temperature of the cpu is higher, there's a difference of at least 20° C more or less. Problem was that I went back to iodak because charging with optimus play v2.53 was a pain since instead of charging it wasn't. (Of course I mean while in use)
With iodak charging is flawless (I activated the fast charge option, which isn't present in Optimus Play).
Is it because of the fast charging option that's making the difference?
I'n trying the cpu undervolted by -75mv MPU and -30mv LPU, and it seems a bit laggier than the optimus play one, I can feel the difference just typing with the keyboard on the browser, but it's charging despite me using the smartphone.
What do you think it's the cause of the slow charge in optimus? And maybe more important thing, how is it possible that the cpu has a 20° C of difference between optimus and iodak but I keep the same frequency? I even undervolted with iodak, and in theory it should be the opposite situation, with iodak having lower temperature.
Click to expand...
Click to collapse
So, talking about charging, on iodak's kernel you have to consider two situations: if you are charging through USB port, you may experiment slow charging and battery consumption even while charging, if you use the phone in the meanwhile (so, using fast charge solves the problem, but it is recommended to do not use it too many often, if you want your battery to have a longer life)..the problem doesn't exist if you charge the phone through AC adapter, so the phone should charge at a normal speed, even if you use it, whit no fast charge necessity.
Talking about my configuration, yes, you may have some little lags, here and there, 'cause this is a battery saving configuration, more than a gaming performance one..
Finally, temperature: maybe the difference between the kernels is due to a different overall cpu voltage, or the temperature is not really precisely shown, honestly I don' t know for sure
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
I'm using the ac adapter and with optimus play charging was a bit hard and slower than with iodak. With -75mv it seems I don't have problems with waking up the smartphone and it seems a bit smoother, maybe a placebo effect, but I think that it could be the limit of undervolting with variant 2 cpus.
Now that I didn't use the smartphone for while the temperature is lower (49-51° C), the high temperature was due to the 1500 Mhz used at the beginning because I deleted cache and dalvik before installing iodak again (to avoid problems). Let's see how it behaves in these days, but I'm a bit confident iodak's config is better for battery saving, even though with antutu benchmark I did 13000 with iodak and, and 12800 with optimus play (with battery saving and performance balanced). It may be a wrong test but I still wanted to give it a try.
Yep, I tried to uV MPU frequencies at -100 mV, and it freezed my phone, after some seconds or minutes..so, I also think CPU variant 0x2 has this uV limit..maybe it's possible to uV a bit more single frequencies, without causing freezes, but I had not the time to try to individually uV any single frequency
Sent from my ME301T - Beanstalk 4.4.2 - Geass Kernel - using xda app-developers app
I was thinking that we should specify what runtime we're using, if Dalvik or ART because I actually felt some differencies. What about you? Do you feel any difference with using one or an other? Sorry for the off topic, but I thought we could talk about the runtime also since we'll looking for the best performance/battery life.
O.T.: Don't activate ART Runtime on the latest cm nightly (3rd of April 2014), it will force close some apps like uicall, dialer, ecc. I had to return to dalvik by installing an older version in which ART was working... quite unconvenient.
This is the best thread ever guys.
I am using iodak 9.95 in Zaiben RC8.
Max 1000 mzh, interactive, no undervolting, Multi core savings 2
The only bad thing is that if i want to wake a the device it doesn't wakes for the first time and I have to press twice the power button.
KrisJoe said:
I was thinking that we should specify what runtime we're using, if Dalvik or ART because I actually felt some differencies. What about you? Do you feel any difference with using one or an other? Sorry for the off topic, but I thought we could talk about the runtime also since we'll looking for the best performance/battery life.
O.T.: Don't activate ART Runtime on the latest cm nightly (3rd of April 2014), it will force close some apps like uicall, dialer, ecc. I had to return to dalvik by installing an older version in which ART was working... quite unconvenient.
Click to expand...
Click to collapse
Yes, everyone is free to talk about ART or Dalvik, of course, it's related to Rom customization, using or not using it! Personally, I'm not using ART, considering it's on an early, experimental stage, and I have no time to switch between the two runtimes, if something should go wrong with ART (I need this phone as my really daily driver, and I haven't too much time to experiment, ATM).. But every single accurate review, also explaining how runtimes work, with a specifical kernel and a specifical Rom, is appreciated here!
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
XxXDarknessXxX said:
This is the best thread ever guys.
I am using iodak 9.95 in Zaiben RC8.
Max 1000 mzh, interactive, no undervolting, Multi core savings 2
The only bad thing is that if i want to wake a the device it doesn't wakes for the first time and I have to press twice the power button.
Click to expand...
Click to collapse
Try multicore powersaving=1, and a little undervolt, you should have benefits in terms of smoothness, without losing battery
Sent from my LG-P880 - Beanstalk 4.4.2 - Iodak 9.95 kernel - using XDA Premium 4 mobile app
KERNEL: Iodak 9.5 (I know 9.95 is newest but I prefer 9.5 as I think it's performance/battery ratio is better.)
ROM: CM 03/30 nightly
SETTINGS(variant1): CPU max: 1500 lowest freq.: 620 screen off max: 475. GPU freq max: 564 mhz
MPU undervolted by -122 mV and LP core undervolted by -10mV but lowest freq. voltage is on default and max freq is on 1230 mV due to 564 mhz GPU freq. ART enabled and Multicore powersaving is set to 2.
GOOD: A lot smoother than 9.95 and with these undervolting I've done, it can survive heavy gaming without throttling.I can say this setup is the best for gaming if you've got variant 1.
BAD: Battery life is a bit worse compared to stock kernel.But with ART enabled it's difficult to notice the difference.Plus if you underclock to 1300 mhz your phone will still be smooth while giving you better battery life.
ottomanhero said:
KERNEL: Iodak 9.5 (I know 9.95 is newest but I prefer 9.5 as I think it's performance/battery ratio is better.)
ROM: CM 03/30 nightly
SETTINGS(variant1): CPU max: 1500 lowest freq.: 620 screen off max: 475. GPU freq max: 564 mhz
MPU undervolted by -122 mV and LP core undervolted by -10mV but lowest freq. voltage is on default and max freq is on 1230 mV due to 564 mhz GPU freq. ART enabled and Multicore powersaving is set to 2.
GOOD: A lot smoother than 9.95 and with these undervolting I've done, it can survive heavy gaming without throttling.I can say this setup is the best for gaming if you've got variant 1.
BAD: Battery life is a bit worse compared to stock kernel.But with ART enabled it's difficult to notice the difference.Plus if you underclock to 1300 mhz your phone will still be smooth while giving you better battery life.
Click to expand...
Click to collapse
I have double press to wake bug with iodak 9.5 how did you solve it ?
CrazyWinner said:
I have double press to wake bug with iodak 9.5 how did you solve it ?
Click to expand...
Click to collapse
I use volume rocker to wake the phone up as a workaround.Easy to reach it with your midfinger once you have the phone in your hand.Plus you get to press the power button less, extending it's life.
Edit : Incase you didn't know official CM and most of the custom ROMs have volume rocker wake option in settings > button or under some other category.

best custom ROM's for game performance

So here many custom ROM's
https://forum.xda-developers.com/mi-max-2/development/available-stock-custom-roms-mi-max-2-t3737523
Which of this the best for gaming? I don't care about my battery life or something else, only good optimization for games :laugh:
Also mb someone know how to tune Kernel Adiutor for gaming, is any guides or something else? i don't found any of this for Mi Max 2
It would be great, if u help
Without a custom Kernel, nothing much can be tuned in Kernel Adiutor to achieve higher performance in games. OC-ing the GPU and CPU would be probably the only solution to gain more FPS. All this ROMs are gonna perform similar with the same kernel.
ekin_strops said:
Without a custom Kernel
Click to expand...
Click to collapse
where i can get custom kernel?
enkins said:
where i can get custom kernel?
Click to expand...
Click to collapse
You can't because there is no custom kernel.
ekin_strops said:
You can't because there is no custom kernel.
Click to expand...
Click to collapse
optimization for games in kernel adiutor is actually pretty straight forward. just choose performance governor for both cpu and gpu and lock both to the highest possible clocks (cpu minimum and maximum 2016 mhz, gpu min and max 650 mhz). that way they wont be downclocking to save power and ull have max performance always
furthermore, u could change IO scheduler to deadline for faster loading times and disable core control (as well as temperature and vdd control, depending on whether theyre active by default) in thermal tab. just keep an eye on device temperatures, cuz ull be basically removing throttling measures for hardware safety. although i doubt this should be a problem with an soc like SD625 in such a large device, but still...better be safe than sorry
Sent from my Xiaomi Mi Max 2 (Oxygen) using Tapatalk
jbmc83 said:
optimization for games in kernel adiutor is actually pretty straight forward. just choose performance governor for both cpu and gpu and lock both to the highest possible clocks (cpu minimum and maximum 2016 mhz, gpu min and max 650 mhz). that way they wont be downclocking to save power and ull have max performance always
furthermore, u could change IO scheduler to deadline for faster loading times and disable core control (as well as temperature and vdd control, depending on whether theyre active by default) in thermal tab. just keep an eye on device temperatures, cuz ull be basically removing throttling measures for hardware safety. although i doubt this should be a problem with an soc like SD625 in such a large device, but still...better be safe than sorry
Click to expand...
Click to collapse
great thanks to u for reply, i try this, hope it helps me
GPU settings not lock on 650 mhz, it's switch between 320 and 650, not 650 all time
enkins said:
GPU settings not lock on 650 mhz, it's switch between 320 and 650, not 650 all time
Click to expand...
Click to collapse
did you change the gpu governor to performance?
Sent from my Xiaomi Mi Max 2 (Oxygen) using Tapatalk
Hi, another way to unlock the cpu at its maximal frequence is to use the mod called " unlimited " in the playstore from the mi-globe rom (miui based)
here is the link : http://forum.mi-globe.com/general-development-f34/app-miui-unlimited-t691.html
You can activate it on the fly, very cool. I use this rom
Regards
jbmc83 said:
did you change the gpu governor to performance?
Sent from my Xiaomi Mi Max 2 (Oxygen) using Tapatalk
Click to expand...
Click to collapse
ofc i did, but still not work
ed57 said:
Hi, another way to unlock the cpu at its maximal frequence is to use the mod called " unlimited " in the playstore from the mi-globe rom (miui based)
here is the link : http://forum.mi-globe.com/general-development-f34/app-miui-unlimited-t691.html
You can activate it on the fly, very cool. I use this rom
Regards
Click to expand...
Click to collapse
it works only on miui rom, or it can works on custom roms?
enkins said:
ofc i did, but still not work
Click to expand...
Click to collapse
ok i just checked on my phone with LOS 14.1 installed. when u set min and max gpu frequency to 650 mhz and set perfomance profile the gpu will only downclock to 320 mhz if there is no load put onto it. if there is ANY load whatsoever (in my case a simple continuous finger swipe over the display) the gpu clock sticks to 650 mhz and stays there.
so no worries, uve unlocked ur SoC performance completely and ull get the most out of it during gaming
edit: btw, dont let the poll results fool you. most people just go with LOS because thats what they are accustomed to the most and because its been out the longest for mi max 2 as far as custom roms are concerned. so more people voting there doesnt mean its actually faster than other roms (likely that most people havent tried ALL roms, especially for gaming-specific purposes )
jbmc83 said:
ok i just checked on my phone with LOS 14.1 installed. when u set min and max gpu frequency to 650 mhz and set perfomance profile the gpu will only downclock to 320 mhz is there is no load put onto it. if there is ANY load whatsoever (in my case a simple continuous finger swipe over the display) the gpu clock sticks to 650 mhz and stays there.
so no worries, uve unlocked ur SoC performance completely and ull get the most out of it during gaming
edit: btw, dont let the poll results fool you. most people just go with LOS because thats what they are accustomed to the most and because its been out the longest for mi max 2 as far as custom roms are concerned. so more people voting there doesnt mean its actually faster than other roms (likely that most people havent tried ALL roms, especially for gaming-specific purposes )
Click to expand...
Click to collapse
ok thanks for that information, u help me so much, i''ll stay on DotOS 7.1.2 and test it for game perfomance, now results are fine, better then xiaomi.eu roms
Lineageos 14.1 is best
Best For Gaming
I believe that would be dot-os

Categories

Resources