hi guys
is there any way to completly disable samsung DVFS in Note 4 ?!
i alredy tried wanam xposed AND Dvfs disabler and they do not work
not if you dont want your phone to catch fire and explode.
scaling is put in place for a reason.
if you are rooted, with xposed , theres a module exactly made to disable dvfs, I used it with my s3, note 3, and now with my note 4, no problems at all
no problems until your phone melts or the battery catches fire, sure. there a reason we all dont drive around with the accelerator to the floor at all times. running CPU and GPU at 100% all the time with no thermal limits is just asking for everything to go sideways.
@zurkx
what are you talking about ?!
i just want to under volt my phone to save battery and DVFS wont let me do it !!!
i know what is the reason of samsung to make it
but i dont want to use samsung tables for voltage and frequency
when i set cpu frequencies dvfs will reset them fast
note 4 throttles the cpus to 400MHz on stock. you cant go lower than that.
winol said:
if you are rooted, with xposed , theres a module exactly made to disable dvfs, I used it with my s3, note 3, and now with my note 4, no problems at all
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Click to collapse
@winol
i used that with no luck !!!
actually that module will partinaly disable dvfs and cause serious system problems like phone restart when turning on battery saver
zurkx said:
note 4 throttles the cpus to 400MHz on stock. you cant go lower than that.
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Click to collapse
i did that , my lowest freq is now 200 mhz but i want to lower max freq but dvfs will reset that
you got it to run stable at 200MHz ? impressive. samsungs datasheet only shows it goes to 400MHz minimum clock.
http://pdadb.net/index.php?m=cpu&id=a5433&c=samsung_exynos_5_octa_5433
@zurkx
i have ultimate kernel which use a little different clocks with minimun 200mhz and yes its completely stable and that boosts battery life
Related
So I disabled the DVFS feature which I heard was some kind of thermal control but now the phone is unbelievably hot after intensive gaming session. For example I played xcom for 30 minutes and the phone felt like frying and the battery went down from 86% to 48%. I didn't have any cpu monitor so I don't know what temperature it was on, but it felt very hot. Is this safe? I personally think it isn't and I will probably turn DVFS back on.
I have a n9005 device, running xnote v15 and lean kernel 2.5.1 with default settings.
From what I gathered, DVFS was Samsung's "cheat" to enable awesome scores in Antutu and other apps that measured how well the CPU, etc worked... Disabling DVFS should in actuality leave it cooler as the CPU's/other aren't being artificially throttled up to maximum...
Correct me if I'm wrong...
lvnatic said:
So I disabled the DVFS feature which I heard was some kind of thermal control but now the phone is unbelievably hot after intensive gaming session. For example I played xcom for 30 minutes and the phone felt like frying and the battery went down from 86% to 48%. I didn't have any cpu monitor so I don't know what temperature it was on, but it felt very hot. Is this safe? I personally think it isn't and I will probably turn DVFS back on.
I have a n9005 device, running xnote v15 and lean kernel 2.5.1 with default settings.
Click to expand...
Click to collapse
Isn't the dvfs stock kernel related?
4aces said:
Isn't the dvfs stock kernel related?
Click to expand...
Click to collapse
No its TouchWiz system based. You can set it in Wanam Xposed.
It may sound like it's related with the kernel, but the kernel does not see what is being run on the device (especially only benchmarking tools) and then ramps up the device to perform better than expected.
Sent from my SM-N900W8 using Tapatalk
Is it safe to change my CPU governor to "performance" to force max clock speed?
I don't want to overclock my Note 4, don't worry, not talking about that. But I am talking about MAX clocking it - forcing it to run at maximum rated speed. I've already tested out SetCPU and used it to change my governor to performance which forces the clock to max, and it nearly doubled my framerate in many games, especially the ones that struggled to play on this device like Xcom:EW.
But I quickly turned it off because I wasn't sure it was safe to do in the new era of smartphones, what with their DVFS and all. I'm worried that I'm going to overheat the CPU, and it's not going to be able to downclock because of temperature anymore. I'm only modifying the governor, but what if I actually used SetCPU to just change the CPU clock to max, without even touching the governor?
Can I hurt my phone by doing this? Can I safely start forcing my CPU to run faster while playing games, knowing that the only thing I risk is my battery draining faster, or am I actually risking damaging components by doing this?
Hello and thank you for using Q/A,
your CPU will not be damaged, but the battery life time will be shorted.
Regards
Trafalgar Square
RC
I personally have used Performance governor on Moto X 2013 for almost the whole 8 months I had it, 24x7 I mean. Never had a problem, yeah maybe battery life was little less than normal but I never did really care about it. Then I ran the same governor for a good period of time on my Note 3 too, same, no problem at all. Like you said, in games the frame rate difference is massive, but I don't play much games, I simply used that governor because it gets rid off all those micro lags and jitters which are Android's trademark, I simply can't them, with default Interactive the micro lags are very apparent.
However with Note 4 I am pretty happy with the BluActive governor, it makes most of the micro lags to go away, so sticking with it.
In any case unless you plan to use a mobile phone for maybe 5 years or so, I don't see any problem at all with it, other than a slightly increased heat, and maybe a little less battery backup, but you will find so many comments which might scare you, that chip burns off if you run it and all that, but those mainly are BS.
So I've been following this section for months and just got my a2017u 2 weeks ago. I'm rooted with tenfars tool still locked on b20. I've noticed in the last few weeks a tapering off of new and useful info for this phone and would really like to see what and where everyone is with it? LSpeed? Kernel Auditor? Or any tweaks that have helped either performance or battery life!!! Looking for anything to make this already great phone better!!! TIA
I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307
+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway
aPexalpha said:
+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway
Click to expand...
Click to collapse
Overclocking can't really harm anything. The excess heat might but it would take a long time and really high temps (you couldn't keep the device in your hands). The only thing you risk by overclocking is a system crash. Just reboot, lower the clock values and voilà ! So no, underclocking can't hurt anything. Overvolting however poses a real threat to the integrity of the components. It's quite the same thing as in computers (except for the heat, you don't always realize it's too hot in a computer).
That being said, is overclocking still even possible on smartphones nowadays ? Just for the fun of it because it's not needed in the least on the Axon 7 .
That's impressive results ! Not sure those hours are needed since the battery is doing well with the software power saver but still a good thing to know.
Still any extra sot is welcome. I'm not a gamer, don't really have any apps that truly need the full power of the sd820 so might give it a shot. Greenify does wonders for standby time.
Not sure if the built in 'intelligent country control' does anything tbh
I'm on my phone most of the day whether it be YouTube play music, texts,calls,etc.. I'm just hoping to find a balance between battery and my multitasking ADHD LOL
Nik2424 said:
I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307
Click to expand...
Click to collapse
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?
aPexalpha said:
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?
Click to expand...
Click to collapse
Yup, I had that problem too initially.
First, I made system changes persistent upon reboot by running this command in Terminal emulator(you can also use adb shell):
reboot disemmcwp
Secondly, you have to disable smart power in the quick toggles.
Once this is done, set your new max values, select the arrow next to it to make it applied on every boot and then reboot your device. It should work.
Note: Everytime you open the EX Kernel manager you will see the speeds jump to max for like 1 sec but if you actually check the cpu statistics you'll see that your settings are sticking and the max clock speed was just for everytime you open the app.
The smart power! I forgot that thing controls the CPU.
So that round arrow thing means apply on boot? I selected that, figured it meant something like that.
Cheers!
just bought a Le Pro 3 and couldn't find any kernel or rom that could under volt. is there any rom or kernel to under volt?. Thx
To undervolt you mean to make the cpu frequencies lower? I am doing that with a program called Kernel Tuner. You can set the CPU and GPU speed and set the CPU governor from there.
The phone it has to be rooted.
motanel_pufos said:
To undervolt you mean to make the cpu frequencies lower? I am doing that with a program called Kernel Tuner. You can set the CPU and GPU speed and set the CPU governor from there.
The phone it has to be rooted.
Click to expand...
Click to collapse
what i mean is to lower the CPU or GPU voltage.
I don't know how to do that. As I said, I use Kernel Tuner to set the maximum cpu/gpu speed the phone can go. It's not the same thing. But is better than nothing. The phone works really good even with lower frequencies and I don't need top speed except some greedy games. Now I can reach a sot of over 6 hours with 4-5 hours of heavy gaming.
If you can find a way do undervolt please post it.
Claire2001 said:
what i mean is to lower the CPU or GPU voltage.
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Click to collapse
No kernels offer access to the voltage table yet. UV isn't available and I don't think it'll come.
Ace42 said:
No kernels offer access to the voltage table yet. UV isn't available and I don't think it'll come.
Click to expand...
Click to collapse
thanks for confirming, time to return the pro 3 or sell it at a loss. was just hoping that out there somewhere there would be a kernel that has the feature to undervolt.
I still don't see the point of undervolting the CPU/GPU on a phone. As long as it works fine and the battery last long enough (and honestly this phone have plenty of battery, I recharge every 2 or 3 days), why?
ZeblodS said:
I still don't see the point of undervolting the CPU/GPU on a phone. As long as it works fine and the battery last long enough (and honestly this phone have plenty of battery, I recharge every 2 or 3 days), why?
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Click to collapse
Because he used to do that on older device, and thinks this is some kind of a must function lol. I also have no clue why on earth you would need to underclock pro 3, it doesnt overheat, and it has probably best battery life of all snapdragon 821 devices. Undervolting this device would gain you absolutely nothing, nonsense.
I am user who watches YouTube most of the time and I looked into BBS and CPU is running about 600 MHz at all 8 cores all the time when I watch videos. I guess thats a lot and it drains my battery. Is it somehow possible to set the lowest clock about 300 MHz when I am watching YouTube? Or just shutdown 4 cores at least? I guess I will need root for that. Thanks
As you can see, I was watching YT for about 4 hours and most of the time was CPU running at 653 MHz, not lower.
600 mhz is the lowest you can get with stock kernel
I believe some kernels (Extreme kernel / Project K) allow you to set it to 300 mhz
berezker said:
600 mhz is the lowest you can get with stock kernel
I believe some kernels (Extreme kernel / Project K) allow you to set it to 300 mhz
Click to expand...
Click to collapse
Great! But is it still possible somehow in stock kernel? With magisk and some kernel apps like kernel adiutor?
TrueMS said:
Great! But is it still possible somehow in stock kernel? With magisk and some kernel apps like kernel adiutor?
Click to expand...
Click to collapse
You need an custom kernel. However, the 300mhz is slightly too low. Making music laggy and distorted when turning off the display.
TrueMS said:
Great! But is it still possible somehow in stock kernel? With magisk and some kernel apps like kernel adiutor?
Click to expand...
Click to collapse
Nope. You need a custom kernel
Most of the devs are already getting rid of OC/UC on their kernels, F.Y.I
Instead of lowering your clock speed try disabling four cores and reduce the max frequency. Set governor to conservative. If you want more power saving use powersave. Warning: performance will degrade heavily.
Edit: skipped over your mention of disabling four cores. Still it's a valid choice. I do it in extreme case.
It's not needed for our Mi A1 i think...
Somehow are there cuskernel to enable biglittle
RisjadB said:
Somehow are there cuskernel to enable biglittle
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Click to collapse
We don't have big.LITTLE. because of 8 cores it shows two clusters of 4 cores as big and little.
alkesh95 said:
We don't have big.LITTLE. because of 8 cores it shows two clusters of 4 cores as big and little.
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What about hotplug.... Never see any core stop @Cpu-z... Rip battery
RIP battery what, the Snapdragon 625 is a very efficient chip. Most modern chips nowadays provide zero to negative impact on the battery life with active intensive core hotplugging.
This soc consumes almost nothing, not worth at all to downclock/downvolt.