yashsingh1/xdaforums huggingface dataset:
[LG Optimus 4X HD] irock4god:
anyone can teach me how to change the cpu variant

tried this on terminal emulator. but it says permission denied.

Tegra cpu variant

/sys/devices/system/cpu/cpu0/cpufreq/tegra_cpu_variant

please help.. im on v6, great work iodak :)
[LG Optimus 4X HD] galdeano:
wow ... great job, amazing kernel, works fantastic

(cm version)
[LG Optimus 4X HD] juanacevedo:
I don't think you can change the cpu variant since its just telling you basically how good your processor is. Changing it will do nothing
[LG Optimus 4X HD] someth1ng:
This. It's a property specific to the CPU in your phone - it's you how you have 2 arms and 2 legs.
[LG Optimus 4X HD] Maatje:
I liked v5, but went with arararagi's ROM because of the kernel support to kill the hardware button backlight. Can you put that function in v7 plzzzzz?
[LG Optimus 4X HD] iodak:
Will do.
[LG Optimus 4X HD] someth1ng:
Is it me or the GPU interface isn't visible in Trickster Mod?
[LG Optimus 4X HD] iodak:
Yes it is not visible on purpose.
[LG Optimus 4X HD] arararagi:
The button backlight isn't related to the kernel. You can install my ROM and flash iodak's kernel on top.
[LG Optimus 4X HD] Maatje:
Great! Tnx ara. Kudos for your quick responses!
[LG Optimus 4X HD] someth1ng:
A couple of questions/requests.

Is it possible to allow 51MHz to be used and have it not block deep sleep? (kholk's kernel can do this)

Is SmartassV2 possible to be implemented? :eek:
[LG Optimus 4X HD] tool_king:
[MENTION=3443693]iodak[/MENTION]:

Not really important, but the OT title is still named "v05" instead of "v06". ;)
[LG Optimus 4X HD] Capozz:
I didn't notice this issue. Until now i found no bugs at all.
[LG Optimus 4X HD] @non4:
Mines fine now too, maybe just a bad line :)

Sent from my rooted P880
[LG Optimus 4X HD] Flying_Bear:
for some reason, it throttles to 1000 mhz max at around 50ish - 55 degrees of CPU temperature, which severely reduces it's performance/score during benchmarks. i'll test some more a bit, but overall it's better than stock noticably in some games. :good:
[LG Optimus 4X HD] @non4:
Check your throttle temps and use trickster mod to change cpuquiet to userspace, no such issue here. Be aware that if the system isn't stressed enough it won't use the full clock speed

Sent from my rooted P880
[LG Optimus 4X HD] Flying_Bear:
will do, thanks for the tips. it wasnt about system stress, as i was running benchmark apps mostly. thanks again
[LG Optimus 4X HD] @non4:
FYI my antutu score is 13542

Sent from my rooted P880
[LG Optimus 4X HD] Flying_Bear:
switching quiet cpu to userspace didnt help either, still clocking to 1000 at 50ish degrees.

i got antutu as high as 13.8k, if i managed to keep it from underclocking to 1000 per core (if i run the test at 30 degrees or so, it doesn't manage to get up to 50 during the test)

oh and, tegra overclock app throttle is set to 75 degrees :/
[LG Optimus 4X HD] iodak:
Try editing /sys/kernel/debug/tegra_thermal/temp_throttle_skin
[LG Optimus 4X HD] Flying_Bear:
current value is 43000, i'll put 50k and see if it'll make any difference :good:

edit:

this seems to have fixed the issue, however afaik this will reset on boot. should i write custom script to set it when it reboots perhaps?
[LG Optimus 4X HD] iodak:
I wont hard code values couse it changable by user. Everyone is able to decide how hot she/he likes. :)

You can write a script and put it in init.d or run with some app on boot.
[LG Optimus 4X HD] Pesach85:
Hey iodak i compiled your same kernel with CPU overclock just for test purpose but i'm still not able to get high scores

Who want to test grab it here

https://www.dropbox.com/s/vrl83f3p3d6wjnt/boot_iodak_overclock1.7ghz.img

but at your own risk!
[LG Optimus 4X HD] @non4:
You need to overclock the GPU and unlink it from CPU to get better scores, 1.5ghz is enough.

Sent from my rooted P880

---------- Post added at 02:32 AM ---------- Previous post was at 02:25 AM ----------

Oh and just thought I would say that -25% voltage is very stable and really helping battery and heat! Thanks!

Sent from my rooted P880
[LG Optimus 4X HD] Bogeyof:
Thanks, I tried it, seems to run without problems. Set to 1700 MHz and cpuquiet-gov to userspace, got over 14300 Points in AnTuTu and system seems to run without problems. I didnt find the option fsync enable/disable, this mod isnt included in this kernel?

[MENTION=306612]non[/MENTION]4: -25% voltage is already included or u did change the values by -25%. For example for 1500 MHz, value is 1200, did u use 900 or something like that instead (or set iodak already values with -25%)?
[LG Optimus 4X HD] @non4:
Just dropped 25% with trickster mod

Sent from my rooted P880
[LG Optimus 4X HD] iodak:
I hope you mean 25mV. If you dropped it 25% then voltage control dont work as it should.
[LG Optimus 4X HD] Bogeyof:
Yepp, I dropped about 50mV and it became unstable. So its impossible to reduce about 25%. Thats why I ask him ...

I dont think, 25 mV is much for battery life, so I didnt test it further and let the settings as they are...
[LG Optimus 4X HD] @non4:
Lol yeah sorry :o

Sent from my rooted P880
[LG Optimus 4X HD] Bogeyof:
I´m still testing, but I have a problem with an App "Smart Screen Off" which turns off display by covering the proximity sensor. The problem is, the phone doesnt wake up sometimes, there is no possibility to turn screen on again (like the known issue for some people while phone calls, display turns black with proximity sensor and doesnt tunr on again). Cant say why, happens only sometimes... I tried to calibrate proximity sensor in hidden menu, still testing if it helps...
[LG Optimus 4X HD] Pesach85:
I don't know why fsync disappeared

.....

Ok simply code was missing when i downloaded sources
[LG Optimus 4X HD] Capozz:
This night the phone didn't go in deep sleep mode (wifi and mobile data off)

Better Battery Stats shows a large amount of "baseband_xmm_power"
[LG Optimus 4X HD] AdiSimpson:
i disable it by d.init script
[LG Optimus 4X HD] DarkFantasy6:
Love version v6. Battery friendly and high fps in games :P
[LG Optimus 4X HD] eric1116:
I had some problem for V6 when I combined with arararagi's Rom. After phone in deep sleep and I tried to turn on to unlock screen the phone freeze and I have to pull out battery to restart. but with V5 have no issue at all.:( any suggestions? thanks
[LG Optimus 4X HD] vidit_panchal:
Is there any way i can transfer data from my laptop to internal storage using this kernel?

I am currently on v06 cm version..

need to transfer sm huge data to internal storage..

Edit: oops sry.. had force fast charged enabled.
[LG Optimus 4X HD] Nemeziz 56th:
Im on the same Kernel version and ROM to.

But never have a freeze after deep sleep when unlock.

My problem the phone go usually deep sleep most it on of 375 and 470 MHz in cpu state app I show that they have the exactly on time.

LG 4X HD - Better than a Smartphone
[LG Optimus 4X HD] iodak:
That app doesn't see lp core. Check time in state and you will see that it goes to 102 and even to 51 in early suspend.
[LG Optimus 4X HD] Subhajitdas298:
What about usb tethering in this kernel?
[LG Optimus 4X HD] Nemeziz 56th:
It work perfect but you must disable debugging modus only then is working.

LG 4X HD - Better than a Smartphone
[LG Optimus 4X HD] Maczuga:
Kernel works great so far. I've been using it for a while and it's great! No bigger heating (not including gaming). Also great results while playing games. For example I had around 30FPS at the highest details without dyn. shades on GTA : Vice City. No lagging, no bugs. I can strongly recommend that kernel to anybody atm.

Great work and keep it developing! Good luck :)
[LG Optimus 4X HD] gordonbennet:
Without too much bias, would this or any custom kernel for that matter be suitable for me of I just want better battery life and am NOT interested in higher clocks/OC and fast charge atm?

Testing on werewolf (cm based), I found the drain to be considerably more when oc'ed to 1.7 and even on 1.5 GHz on interactive governor.

Currently on stock based Zaiben rom

Thanks.
[LG Optimus 4X HD] raviboy100:
I want better battery life as well and as for now cm10.1 with stock kernel is still my best it gives me 1.5days of use
[LG Optimus 4X HD] Navios92:
Can someone tell what is the maximum safe GPU clock?

Also I'm having signal drop issue and I had one SoD.

V06 CM10.1 R5

EDIT: Signal drop is becoming unbearable and I have to restart to get signal back. I love this kernel it gives me the best performance I've ever had with my phone but I can't use it as there's almost no signal at all!
[LG Optimus 4X HD] iodak:
I never had this problem. How is it with other kernels? Post logs.
[LG Optimus 4X HD] tool_king:
For me, v06 is working just perfectly with arararagi's customized CM10.1 (with ondemand governor und cfq scheduler, undeclocked to 1150 MHz). Keep up your great work! Thanks!
[LG Optimus 4X HD] :
temperature

67 Celsius CPU temperature in TricsterMod is it real?

Or is just a glich?
[LG Optimus 4X HD] tool_king:
What's the problem with 67°C CPU temperature? The throttle is set at 80/90°C afaik.
[LG Optimus 4X HD] tonhao12:
underclock cpu

Hello guys!

Sorry for posting this noob question, but after some searching I haven't yet found the answer to this. I want to know how can I underclock the cpu to 1500mhz. I have installed tricktermod but it is not clear for me what I have to do to bring down the max cpu frequency.

Can anyone please help me with that.

Thanks in advance.
[LG Optimus 4X HD] tool_king:
Trickster MOD - General - CPU Settings - Set Max to 1500000 - Check on the upper right side to confirm
[LG Optimus 4X HD] Navios92:
Never had it with CM kernel or Werewolf kernel.
[LG Optimus 4X HD] Navios92:
I did a fresh install and no signal drop so far.
[LG Optimus 4X HD] Turbol:
tons of deep sleep :)

iodak v6 on zaiben rom
[LG Optimus 4X HD] PrePay:
I recommend Rom Toolbox to set your own profiles. I under-clock my device when the battery is getting lower.

I'm planning to post a how-to for this and my results for ROM and Kernel reviews.

I'm flasing this kernel now on my device with the the XenonHD rom.
[LG Optimus 4X HD] gordonbennet:
Thanks mate. That would be great if you could share the results when they are known.
[LG Optimus 4X HD] blumenkasten:
I paired the device again and now it works. :thumbup:
[LG Optimus 4X HD] Dark_Az_:
Greetings all.

A quick question before I proceed to install this. I currently have stock 20a JB with stock Kernel, pretty happy since I managed a 0.8%/h power consumption. From my understanding, I can reflash the boot.bin (from the nandroid backup) to get the stock kernel back.

Just wanted to make sure that is the case with this phone as well. I'm currently not planning to change rom's, so I believe I wouldn't need to flash anything else besides the boot.bin, correct?
[LG Optimus 4X HD] hernestwisnu:
Never try it, but CWM backup always gets the job done. If storage space isn't an issue for you, I think CWM backup is the best
[LG Optimus 4X HD] Dark_Az_:
First off, thanks for answering.

Now, in a bit more detail, yes I sure as hell won't touch anything before doing a CWM backup. Just wondering if instead of restoring the full backup I could just make do with the boot.img (wrong termination in my previous post) and get the kernel back. Basically just being preemptively lazy and not wanting to flash a full backup just for the kernel in case something messes up, worry not.
[LG Optimus 4X HD] iodak:
You have to restore boot.img and modules. So restoring only system and boot.img will do. Also there is flashable zip stock kernel in general section some were, so make a search and find it then you can just flash it to go back to stock.
[LG Optimus 4X HD] tool_king:
Are you asking the same question on every kernel related thread :rolleyes:now?
[LG Optimus 4X HD] sunnytse1:
2 kernel threads only.both kernels are great.
[LG Optimus 4X HD] DankoFGL:
Installed on V20C stock kernel, damn it booted in 9 seconds nd now is optimizing apps because i fixed permissions,i will test for battery and gaming results!
[LG Optimus 4X HD] Winudert:
I like this kernel, more smooth UI than with stock kernel, but battery in my case is draining fast, really fast.
[LG Optimus 4X HD] DankoFGL:
Remember that normally you need to do a 2 or 3 cycles with any new kernel or room to the phone stabilise it self, but with the LG you need to do like 10 cycles to see the real performance of the battery, anyway you can to put your cpu back to 1.5Ghz and your gpu to 416mhz because in this kernel is 1,6Ghz and 520Mhz each, it moves a lot better UI speed, even writing is better... and in modern combat 4 you get like 2 or 3 frame drops in an total level, with the normal kernel, you got all the level to be a constant frame drop and maybe unplayable for a lot of people... now is perfectly playable..

Try to run the first week at 2G connections and the lowest screen brightness possible and after that week use your cel normally to see if it's keep being an seven litre v8 or an 4 in line turbo...

Enviado desde mi LG-P880 usando Tapatalk 4 Beta
[LG Optimus 4X HD] Monskiller:
As for USB Thedering. Is it a kernel or ROM issue.
[LG Optimus 4X HD] iodak:
I know it works on CM. Didn't try on stock. Try disabling USB debug.
[LG Optimus 4X HD] milossimon:
[MENTION=4436306]DankoFGL[/MENTION]

I also liked this kernel for performance but i noticed while playing movie it uses two cores at 1200mhz , but playing same movie on CyanogenMod only one core active frequency range from 340 to 1000mhz. This was also when playing simple games and just touching homescreen. But for me best gaming kernel :)
[LG Optimus 4X HD] Monskiller:
Okay, I didn't try to disable debugging. I will later.
[LG Optimus 4X HD] noobiei5:
I got same Problem, disenabling debug was solution, now tether works :)
[LG Optimus 4X HD] DankoFGL:
I use root explorer to overclock my GPU to 600Mhz, but, after restar, the freqs go back to 520... how i do to it keep at 600Mhz OC?
[LG Optimus 4X HD] steveman29:
You can use a script to make it permanent.
[LG Optimus 4X HD] tool_king:
Maybe you try it with this (paid!) app. Works flawlessly for me.

https://play.google.com/store/apps/details?id=com.tegraoverclock
[LG Optimus 4X HD] DankoFGL:
How i do a script like that?

I'm using it is one of the first apps that I bought with my lg

Enviado desde mi LG-P880 usando Tapatalk 4 Beta
[LG Optimus 4X HD] ebreo:
for underclock all cores which file i have to edit?
[LG Optimus 4X HD] GalaxyVolvoZ:
When i flash this rom. Cpu is 1,7ghz and gpu 512 mhz is as.default ? I want the default settings of cpu and gpu like the lg.stock kernel.! 1,5Ghz and 200mhz gpu. Help.please
[LG Optimus 4X HD] ectoplasma22:
Use trickster mod and choose "set on boot" in the menu.

Or use Tegra Overclock to set the gpu frequency.
[LG Optimus 4X HD] GalaxyVolvoZ:
Ectoplasma ! :d in the past you helped me alot ;D in all sections you always found me, ok use trickster mod to set.cpu and gpu to get the default lg kernel.settings right ?

Btw can i flash this.also via lgs stock recovery 20a ?
[LG Optimus 4X HD] ectoplasma22:
I had a lot of difficulties to subscribe in xda-developers (I know it's ridiculous) and now I want to help the more people I can, I love the questions and I'm happy when I help someone so it's a pleasure being able to help you :D

So yes you can use trickster mod to set the frequencies and then choose "set on boot" so that you won't have to configure your phone at every reboots.

To install the kernel you have to install CWM 6.0.31 and then follow the instructions of Iodak. That's very easy and this is the best kernel I've tried so far :D

---------- Post added at 10:49 PM ---------- Previous post was at 10:46 PM ----------

You can also flash via TWRP

Btw I just answered your question in the the question section ;)
[LG Optimus 4X HD] Winudert:
Trickster Mod sucks. I installed No-Frills CPU, set min to 51MHz and max to 1500MHz. Good battery life, good performance. I also slightly lowered GPU clock, because phone in games is just too hot for my hands. In any other case, good kernel, just defaults are bad.
[LG Optimus 4X HD] moss20:
just change the values between the " "..

LG Optimus 4x HD (P880)

Bootloader : unlocked

Recovery : CWM Touch 6.0.3.1

Rom : Zaiben Z.0.3 RC2 [v20a - 4.1.2]

Kernel : iodak v04 [3.1.10]
[LG Optimus 4X HD] ebreo:
What about undervolt lp core?why lp need that much mv like tegra 3?can i set low mv?and what about change gpu mv?
[LG Optimus 4X HD] amkirk94:
ok. I've been testing your Kernel in combination with CM for quite some time now.

First of all: WARNING! Do not use your phone if it's charging and there no battary left! It might freeze up and overheat, damaging your device. Thankfully, I rescued mine just in time :p

Secondly: From my experience, this is the best kernel you can use for gaming. It increases framerate and reduces lag like no other kernel I have seen.

Lastly: You might experience some issues. My phone could not connect to my network provider for 10-15 minutes even if I rebooted my device. I'm not sure if that's the kernel's or CM's fault. Could be both :p

Other than that, your kernel is totally worth-checking mr developer and I love it! Please, keep surprising us with updates, fixes and hints! :laugh:
[LG Optimus 4X HD] ectoplasma22:
I never had problem while charging my phone :confused: I play games while my phone is charging, it gets hotter than usually but it doesn't burn ;)

I agree with your second point, it is the best kernel for gaming :D

And finally I never had issues with network either, I stay connected to the network during more than 2 hours sometimes without losing the network.

Maybe your problems come from your rom :confused:
[LG Optimus 4X HD] DankoFGL:
I'm using it on stock v20c and it lag free, great for gaming and no experience so much overheat while gaming, even charging, and with the network, no issues so far

Enviado desde mi LG-P880 usando Tapatalk 4 Beta
[LG Optimus 4X HD] tool_king:
Seems to me, that you haven't done some nice wipe for a longer time. ;)
[LG Optimus 4X HD] @non4:
Iodak I just have to congratulate you on v6 stock. Its wonderful, the phone is performing like a ONE X now which it should because its the same hardware. GPU@520, Fsync off, row scheduler, FPS limit @40% in tegra overclock, temp_throttle skin @50°. Those are my settings and dead trigger plays like it does on kholks releases

---------- Post added at 11:41 AM ---------- Previous post was at 11:39 AM ----------
[LG Optimus 4X HD] amkirk94:
Turns out to be my SIM's fault! Sorry for the inconvenience! :p
[LG Optimus 4X HD] @non4:
Anyone experienced black textures on NFS MW on latest version? It looks cool but it's not really playable :p
[LG Optimus 4X HD] iodak:
Does it have anything to do with kernel?

Are you talking about latest version of game or kernel?
[LG Optimus 4X HD] @non4:
Both are latest versions ;)
[LG Optimus 4X HD] @non4:
NFS problem was solved by redownloading data, must have been somehow corrupt
[LG Optimus 4X HD] casablanko:
does anyone experiencing wifi prob??

mine now can't turn on, before this happen, i use wifi normally, and then turn it off.

but just now i want to turn it on again it stucks "turning wifi on....."

already reboot even turned off my o4x, it still like that?

is this kernel prob or rom prob? im using v.06 and CM

thanks guys
[LG Optimus 4X HD] iodak:
Try to flash it again, only kernel.
[LG Optimus 4X HD] dimi89:
I am using JB V20a Euro unlocked+rooted+CWM non touch iunstalled .. Should i wipe catche+data + dalvik before installing on stock JB or i cna just flash it without total wipe of the sistem ?

P.S.Should i use CWM to wipe it or i can use in-built Factory data Reset ?
[LG Optimus 4X HD] UncleRipper:
only dalvik cache and cache:)

on CMW
[LG Optimus 4X HD] dimi89:
Ok thank you for quick answer :)

P.S. I tryed to tweak current stock kernel with SetCPU.If i delete delvik and catche via CWM and flash iodak v6 kernel will old values stick on new kernel or new kernel will work as developer set it up at first place ?
[LG Optimus 4X HD] AdiSimpson:
[MENTION=3443693]iodak[/MENTION]

how far is v7 release away :fingers-crossed:
[LG Optimus 4X HD] @non4:
Never ask for ETA
[LG Optimus 4X HD] funkstex:
me too, no wifi. after reflash its the same.

edit: Dont know why, i enabled bluetooth and now even after restart wifi is working. Perhaps just wait a few minutes?!
[LG Optimus 4X HD] iodak:
No need to wipe anything just flash it.

Voltages are stock and you can tweak them yourself.

I have take look in to WiFi issue, it would be good to provide some logs with it.

I am on stable CM and WiFi works perfectly.
[LG Optimus 4X HD] casablanko:
after reflash wifi back to normal again, but i dont know if this prob will occur again

will report back if persist
[LG Optimus 4X HD] mobrol:
I was trying so much to reach 10 posts in order to mention something very important! First of all iodak congratulations for your excellent work! But could you please do something to increase the vibration for cm kernel??

When the phone in pocket i can never realise when I have a call if in a noisy environment..

For stock rom everything is perfect but for cm is sooo calm..

Please do something if its possible
[LG Optimus 4X HD] KiD3991:
Consider me noob, but is there a way to Underclock this kernel(or any kernel in the O4X section)? Because I'm trying to save battery by underclocking but using any app doesnt seem to help in any way at all. I tried Trickster(not even a complete table for 4 cores), and kernel tuner(one I trusted more).

All the values seemed to be locked dead. In iodak when it came with zaiben it was clocked at min max 1500?

I can manage to change the value of only cpu0. Do tell me is there is any way.

Thank you in advance.
[LG Optimus 4X HD] @non4:
Tegra overclock has core control
[LG Optimus 4X HD] iodak:
Try set value to

/sys/module/cpu_tegra/parameters/cpu_user_cap

For example 1400000 for 1400 MHz

0 is default (no cap).

As I see it, some service is resetting values in stock ROM you will need to find it and dissable it. I think Setcpu only works on stock roms.

Anyway mine next release will be with all stock values but overclockable.
[LG Optimus 4X HD] @non4:
BTW variant 0 still has no 1600. Not a problem for me as 1500 quad is overkill anyway, just reporting. Any other big plans for this release?
[LG Optimus 4X HD] iodak:
I know that. I could get you 1.6 or more but that would demand for higher voltages on already overheated phone.
[LG Optimus 4X HD] DankoFGL:
hey iodak, what about implementing Aroma Installer to your kernel? imagine that any peple just put the settings that they want... for example, i will go nice with 1.4 or 1.5Ghz CPU, with the maximun GPU speed avalible... that would be great, even if you can modify LMK from the instalaton of the kernel itself...

sorry for the bad english... i hope you get it
[LG Optimus 4X HD] iodak:
That would be very stupid, since you can change every setting from booted OS. This is not rom.
[LG Optimus 4X HD] @non4:
It says 1600 is available in the OP though. Like I say I'm not bothered, but I used werewolf kernel with 1700 and no issues, throttling takes care of it
[LG Optimus 4X HD] DankoFGL:
I don't think that it is a stupid idea because some people don't like to use third party apps like me and when you reboot some settings go back to normal, so if we could implement that on the booting of the kernel will be more usable and user friendly, in sensation all kernels are aroma and you can choose between 815mhz to 1.71ghz

Enviado desde mi LG-P880 usando Tapatalk 4 Beta
[LG Optimus 4X HD] iodak:
Well i am not going to do it. I would take a lot of time to make all that versions.
[LG Optimus 4X HD] KiD3991:
I changed the value of 0 in the cpu file to 1000000 but when I reboot it goes back to 0.

So what can I do?