[GUIDE] UNDERVOLTING Your LG G2 (UPDATED v4 BETA) (OC 2.4GHz) - G2 General

Searched a lot of posts but cannot find any useful post (-25 mv or -50 mv) for LG G2 so decided to make my own UNDERVOLTING TABLE
Why undervolting is important?
With rising freq needs more voltage and more voltage makes device hot
If tempature stays a little bit lower and not rising fastly device will be use high frequencies with low tempatures(according to old frequency tempature)
It can stays old tempature with high frequency!
It means more smooth user interface and less laggy gaming performance
(not lower tempature on high pressure but lower when regular use)
Under high pressure (gaming or benchmak test) device frozed so I rised voltage a little bit for stability.
v 4 BETA
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Applied with dorimanx kernel v4.6
I will be honest with you; it's not efficient undervolting table because of heating (Waiting for next kernel or use v4..2 with v3 undervolting table)
Adjusted for performance profile and as you can see 1.04 GHz is nearly undervolted -5 mV.
You can change % and build your own undervoltage table.
Kernel settings
MASTER CORE
4 x Intellimm
Touch boost: DISABLED
CPU Freq: 2.5 (or optionally 2.4)
Max screen off freq: 1.04 GHz
THERMAL CONTROLS
CPU Temp Control: Intelligent temp control only
Temp Pull Timer: 200 ms
Hotplug Thermal CPU Control: Enabled
Max Online CPU's: ALL CORES ON
INTELLI CORE MAX HEAT: 76
See frequencies real time with Trepn Profiler and CPU tempature
Found a tool to undervoltage instead of 2 applications
Download Kernel Toolkit from google play
Here is how you can set voltages
v 3
Tested for 2 days (Dorimanx kernel v4.2)
v2 not freezing but rebooting so changed undervoltage values about %5 for safety.
Update: Tested a lot of combinations but v3 is the best for now.
Added 2.4 GHz for performance, you can use optionally but I recommanded using 2.4 GHz It makes phone very smooth without heating and draining battery. Use yellow mV table when you apply.
Recommended Kernel Settings
4 x intellimm
Touchboost: Disabled
CPU TEMP CONTROL: Intelligent Temp Control Only
Hotplug thermal control: Enabled
Max Online CPUS : Core 0,1,2 (3 cores)
Hotplug Driver: Intelligent Hot Plug
v 2
Used percentage instead of iteration.
After hours testing table v2 more stable, gives more performance and less laggy
Under high load on cpu with gaming CPU stays 68-71 C and can't see any "big" lag just micro lags (tested with Real Racing 3 and Sky Force)
Cores stays 1.5 GHz on Sky Force and 1.2 GHz on Real Racing 3
Changed Max Online CPUS 2 to 3
Tried also 4 cores but best is 3 for smoth
v 1
Finding the correct value is hard for a first timer here is values:
Tested for 3 days some voltages mekes device laggy or frozen (Tested with Trepn Profiler for frozen Cpu frequencies)
Tested with LG G2 D802 (v1.2) Dorimanx lollipop kernel (v 4.2)
Most setting fits with your phone with these settings
But what happens if you want to make your own UNDERVOLTAGE TABLE ?!
There are two situations:
1. Mostly frozen on while you set the voltage so we know which freq needs more voltage
2. Sudden freze and you don't know which freq causes? Use Trepn Profiler; it shows every time which cpu core on which freq
If your device frozen you can know (or you can suspect) (Makes a little bit laggy. At highest tempature cores will be stay same frequency and you can close trepn and see not lagging results while testing)
Let me know how it works for your device :fingers-crossed:

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I've found that -40mv was the best for me. Except on the lower speeds, in which I went just a little bit lower. I put everything -40 across the board and then I'd bring the 300MHz down to 0.7v and the two frequencies higher would be slightly higher than 0.7v. Sometimes I'll even set the 2nd step to the same as the first. The furthest I'd go with lowering values even further is the 4th step.
If you want clarification, I can give it to you. Oh, keep in mind, my CPU was given a bin rating of 4, so I'm a bit better off than average. http://forum.xda-developers.com/showthread.php?t=2489998

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tehbigbug said:
I've found that -40mv was the best for me. Except on the lower speeds, in which I went just a little bit lower. I put everything -40 across the board and then I'd bring the 300MHz down to 0.7v and the two frequencies higher would be slightly higher than 0.7v. Sometimes I'll even set the 2nd step to the same as the first. The furthest I'd go with lowering values even further is the 4th step.
If you want clarification, I can give it to you. Oh, keep in mind, my CPU was given a bin rating of 4, so I'm a bit better off than average. http://forum.xda-developers.com/showthread.php?t=2489998
Click to expand...
Click to collapse
I know every device has different processor but I don't know that kinf of classification Thanks
Mine PVS bin 2 and speed rating 2.3 GHz
Step-by-step undervolting good idea I did it firstly then I make an iteration Really obsessed I know.
Most default values makes graph linear so I follow this way and find max and min frequency voltages then found values between these voltage values.
Tested on high pressure and adjust a little bit.

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Hi,
thanks for pushing the kernel and phone tuning even further.
My phone is PVS bin 2 too.
I tried a more simple approach. I had "A1 CPU Tool" installed already and checked the most used frequencies. So I started modifying those in the first place (-25mv)
I am curious if it will have any day by day measurable effect.
And last but not least, if the phone will remain stable.
Sent from my LG-D802 using XDA Free mobile app

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silent_silver said:
Hi,
thanks for pushing the kernel and phone tuning even further.
My phone is PVS bin 2 too.
I tried a more simple approach. I had "A1 CPU Tool" installed already and checked the most used frequencies. So I started modifying those in the first place (-25mv)
I am curious if it will have any day by day measurable effect.
And last but not least, if the phone will remain stable.
Sent from my LG-D802 using XDA Free mobile app
Click to expand...
Click to collapse
Trepn Profiler shows real time while you testing the undervolting settings when device frozen it helps to find which frequency
If A1 CPU Tool usable then use it but I recommanded If you follow my way
Testing testing testing and already had 2 freze [Solved with v2]
If I can lock on a frequency I will test all of them and compare "CPU load"

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Thanks for this! So far it's stable for me, and especially the Phone is not that warm now

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tryman87 said:
Thanks for this! So far it's stable for me, and especially the Phone is not that warm now
Click to expand...
Click to collapse
When screen off more reduced tempature but while gaming will be heating the same
Check out v3, it would be more stable

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lynxrz said:
When screen off more reduced tempature but while gaming will be heating the same
Check out v3, it would be more stable
Click to expand...
Click to collapse
I'm a bit confused with the v3 graph, which one should i follow? There's the yellow, green and brown.

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tryman87 said:
I'm a bit confused with the v3 graph, which one should i follow? There's the yellow, green and brown.
Click to expand...
Click to collapse
Follow yellow one, forgot to note down
I'm adding to post now.
Thanks for your attention

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nice guide!!
i found out that my CPU can stay stable at -45-40mvs
i did some manual undervolting such as 300mhz at 700mv
on the other hand at 1200-1700mhz range i kept the -45mv undervolt as i had some freezes with -50mvs (still a work in progress)
kernel:dorimanx 4.2 ,default profile ,no touchboost ,ondemand guvernor
CPU bin: 3
testing done with:vellamo / day to day usage + trepn profiler

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No need for lame programs with Dorimanx kernel. Here is 4.4.2 example:
Code:
[B]# get vdd table:[/B]
cat /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
[B]# we can decrease all values...[/B]
echo "-25000" > /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
[B] # ... or just one value we need:[/B]
echo "2419200 975000" > /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
And 5.0.2 example:
Code:
[B]# get vdd table:[/B]
cat /sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table
[B]# we can recalibrate all settings here from min to max frequencies...[/B]
echo "750 760 770 780 790 800 810 820 840 860 880 900 920 950 1000 1020 1060 1090 1120" > /sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table
After some testing you just add modded values to init.d script. Profit!

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GK_222 said:
No need for lame programs with Dorimanx kernel. Here is example:
Code:
[B]# get vdd table:[/B]
cat /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
[B]# we can decrease all values...[/B]
echo "-25000" > /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
[B] # ... or just one value we need:[/B]
echo "2419200 975000" > /sys/devices/system/cpu/cpufreq/vdd_table/vdd_levels
After some testing you just add modded values to init.d script. Profit!
Click to expand...
Click to collapse
If I can build a init.d script I'll add this (probably in next version) thanks for info :good:

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bogdy5 said:
nice guide!!
i found out that my CPU can stay stable at -45-40mvs
i did some manual undervolting such as 300mhz at 700mv
on the other hand at 1200-1700mhz range i kept the -45mv undervolt as i had some freezes with -50mvs (still a work in progress)
kernel:dorimanx 4.2 ,default profile ,no touchboost ,ondemand guvernor
CPU bin: 3
testing done with:vellamo / day to day usage + trepn profiler
Click to expand...
Click to collapse
Thanks
Try to change % in v4 Freq table
Usage of cpu depends on your governor and carefully watch cores frequencies, yes ALL of them in the same time
Mostly high frequencies not used because of heating and these frequencies has more flexible undervoltages BUT sometimes high frequencies cause freze at cold stuations (mostly seen while waking up the device) so using % helps a lot.