hi to everyone...i'm just trying to find a kernel for z5 .152 which let me undervolt the smartphone cause i can't undervolt with the original one or with the @AndroPlus kernel..thank you
Why do you want to undervolt?
Sent from my Xperia z5 using Tapatalk
i want to undervolt to improve autonomy and processor life
It might help to increase battery life as well
The amount you can safely undervolt on most devices will achieve you nothing in real life terms. U might achieve a bit cooler running but you're probably talking like 1-2 degrees
Sent from my Xperia z5 using Tapatalk
dylanel98 said:
hi to everyone...i'm just trying to find a kernel for z5 .152 which let me undervolt the smartphone cause i can't undervolt with the original one or with the @AndroPlus kernel..thank you
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Click to collapse
AndroPlus kernel works fine with undervolting, I was able to undervolt my Z5 by -300mv on all frequencies
_LLJY said:
AndroPlus kernel works fine with undervolting, I was able to undervolt my Z5 by -300mv on all frequencies
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What tool did you use to undervolt? I tried using device control, but it kept resetting to the default value when I left the menu.
butilities said:
It might help to increase battery life as well
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Click to collapse
well, with the current state,
you can only reduce the drain but not stop it (e.g. via http://forum.xda-developers.com/xpe...urance-tweaks-v1-tweaks-t3321841/post65494883 )
that's not an satisfying situation for me,
investigating ...
astarrk said:
What tool did you use to undervolt? I tried using device control, but it kept resetting to the default value when I left the menu.
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Click to collapse
i used kernel adiutor from the playstore, works like a charm, my phone does not overheat now
butilities said:
It might help to increase battery life as well
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Click to collapse
You'll get about 5 more minutes on the screen over a charge. Not worth the hassle really
Sent from my Xperia Z5 using XDA Labs
Ben36 said:
You'll get about 5 more minutes on the screen over a charge. Not worth the hassle really
Sent from my Xperia Z5 using XDA Labs
Click to expand...
Click to collapse
People do it mostly because of heat, not battery.
Ben36 said:
You'll get about 5 more minutes on the screen over a charge. Not worth the hassle really
Sent from my Xperia Z5 using XDA Labs
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It reduces heat on the SoC which can help it last longer
anyone can tell me how to adjust the undervolt on my marshmallow z5?via kernel adiutor5
hadec said:
anyone can tell me how to adjust the undervolt on my marshmallow z5?via kernel adiutor5
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Go to kernel adiutor>cpu voltage and then adjust there, do note that 700mv is the lowest u can go
_LLJY said:
Go to kernel adiutor>cpu voltage and then adjust there, do note that 700mv is the lowest u can go
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would u mind if u could be more specific?
hadec said:
would u mind if u could be more specific?
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Click to collapse
Download kernel adiutor, open it, give it root access, then swipe from the left side of the screen to access the options, go to cpu voltage, it will present you with the Little and Big frequencies, tap on any frequency to change its value to your liking and do note that 700mv is the lowest voltage you can set to every frequency.
_LLJY said:
Download kernel adiutor, open it, give it root access, then swipe from the left side of the screen to access the options, go to cpu voltage, it will present you with the Little and Big frequencies, tap on any frequency to change its value to your liking and do note that 700mv is the lowest voltage you can set to every frequency.
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thx much hope it has an impact on battery life
Related
Sorry for this stupid question but can somebody tell me what's Undervolting and what's it's benefits ??
xMini said:
Sorry for this stupid question but can somebody tell me what's Undervolting and what's it's benefits ??
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It's the opposite of overvlocking..
it's used to have more battery life..
bruuuno said:
It's the opposite of overvlocking..
it's used to have more battery life..
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Isn't "Underclocking" the opposite of Overclocking ?!
I was asking about "Undervolting"...
Same clock speed less voltage so same power while using less juice
Most of the devs will think of everyone so the voltages are quite high but some people only need half that for a certain clock speed some need the full amount so the ones who dont need all that juice can undervolt on almost every frequancy and get mean battery savings!!!!
Sent from my tf101 using xda premium 1.54Ghz
Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
No it's not dangerous for the CPU, the device will become unstable and possibly randomly restart if the voltage is too low.
You can try the Antutu app which has a stability test
JonesL said:
No it's not dangerous for the CPU, the device will become unstable and possibly randomly restart if the voltage is too low.
You can try the Antutu app which has a stability test
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Click to collapse
Thank you. If the "Antutu's stability test" fails , i get an error? Or simply i get the restart of device?
My cpu is PVS 1: realistically how much can I get off? I'm now at -50 mv without problems.
Paolo83 said:
Thank you. If the "Antutu's stability test" fails , i get an error? Or simply i get the restart of device?
My cpu is PVS 1: realistically how much can I get off? I'm now at -50 mv without problems.
Click to expand...
Click to collapse
-75, maybe -100. Btw, this should go in q&a
Paolo83 said:
Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
Click to expand...
Click to collapse
I'm using cataclysm and r14 right now. I'm undervolting -75. Last night I left my phone unplugged and drained 1% over 6 hours idle.
Sent from my Nexus 5 using xda premium
cntrdctn said:
I'm using cataclysm and r14 right now. I'm undervolting -75. Last night I left my phone unplugged and drained 1% over 6 hours idle.
Sent from my Nexus 5 using xda premium
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I use Cataclysm + r14 as well, but if I undervolt more than -25mV across the board, the phone would crash in antutu benchmark. (I'm sort of using antutu as a stress test)
Paolo83 said:
Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
Click to expand...
Click to collapse
Undervolt (mV) isn´t for battery life, it´s for low temperature. Underclock (MHz) is done for battery pourposes
What undervolting have people got set with what set up that's still safe and stable... How low can you actually go on the nexus 5?
For example... I'm currently...
Rom: stock with some apps removed
Runtime: ART
User style: just phone and Internet browsing, no games really ever
Kernel: linaro version of franco's
Kernel Settings: stock min and max frequency - 61 vibration amp setting.
Undervolt: - 50 across the board
Sent from my Nexus 5 using Tapatalk
All undervolting is safe. Just not necessarily stable. Varies for everyone (and evey CPU is different) so not sure this thread will help you.
rootSU said:
All undervolting is safe. Just not necessarily stable. Varies for everyone (and evey CPU is different) so not sure this thread will help you.
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-50 is the best I can get without the phone freezing and rebooting.
I run at 975mV 2.2GHz, that's PVS3. Think that's pretty good.
Sent from my Nexus 5 using xda app-developers app
frigidazzi said:
-50 is the best I can get without the phone freezing and rebooting.
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Same.
I just installed Frnaco Kernel 32 build..
when i opened up the app thats also by him i found that the maximum frequency of my all four cores was 1.5ghz ??
can someone please clarify that?
besides is the 'hotplug' setting set to ON by default or we have to change it?
and if i dont make any changes at all just install the kernel,will it make any difference in the way the CPU works?
I am more than satisfied with the way the Nexus works on stock just a little more customization and screen color tuning is all i seek for!
PS i have been through the thread its a long one i did read quite a few but since i am new this query of mine may be stupid enough to even be there so posting it here!
2.296 (or 2.3) approx
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rootSU said:
2.296 (or 2.3) approx
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Hi,
Just a question: isn't it 2,26 Ghz (2265600)?
viking37 said:
Hi,
Just a question: isn't it 2,26 Ghz (2265600)?
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Is it? Maybe. Thought it was just under 2.3 but I don't have stock frequencies so I was going off what I thought was "memory"
Either way though, not 1.5
Sent from my Nexus 5 using Tapatalk
rootSU said:
Either way though, not 1.5
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Yes for sure
This is rounded up for 2,3 Ghz, 2,26 or 2,29 Ghz won't make a big difference. In the Nexus 5 I think it's 2.26.
EDIT: I have 2,26 Ghz in stock kernel
rootSU said:
2.296 (or 2.3) approx
Sent from my Nexus 5 using Tapatalk
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so i will jus ramp it up to 2.256 via app!!!!
i font know why it was under clocked on mine to around 1.5ghz!
Sonone said:
so i will jus ramp it up to 2.256 via app!!!!
i font know why it was under clocked on mine to around 1.5ghz!
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Click to collapse
Could be thermal throttling. Or a glitch. Which app and kernel version?
Aerowinder said:
Could be thermal throttling. Or a glitch. Which app and kernel version?
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Click to collapse
thermal throttling is when cpu reduces the clock speed to prevent overheat! right? (its a question)
ya i am using Franco Kernel(32) and stock rom!
and Franco Kernel Update app!
Aerowinder said:
Could be thermal throttling. Or a glitch. Which app and kernel version?
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Click to collapse
thermal throttling is when cpu reduces the clock speed to prevent overheat! right? (its a question)
ya i am using Franco Kernel(32) and stock rom!
and Franco Kernel Update app (CPU Manager of it)
Aerowinder said:
Could be thermal throttling. Or a glitch. Which app and kernel version?
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Click to collapse
Chaos Kernel. Comes with NXT to tweak to your liking, there are also preset profiles that are very nice. http://forum.xda-developers.com/showthread.php?t=2551441
I made my own profile but do what you will its your phone :good:
Sonone said:
thermal throttling is when cpu reduces the clock speed to prevent overheat! right? (its a question)
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Click to collapse
Yes, that's it
Sonone said:
thermal throttling is when cpu reduces the clock speed to prevent overheat! right? (its a question)
ya i am using Franco Kernel(32) and stock rom!
and Franco Kernel Update app (CPU Manager of it)
Click to expand...
Click to collapse
That is correct.
Hey guys, what xperia Z5 kernels are available for underclocking, undervolting, or disabling some cpu cores?
Are there any custom roms available that are capable of this functions?
I really want to decrease the heat generated by this device, so much so that Im planning switch to other phones. Im considering Unlocking my BL to explore these possibilities.
It'll throttle itself if it gets too hot. Just use your phone normally
Sent from my Xperia Z5 using XDA Labs
Ben36 said:
It'll throttle itself if it gets too hot. Just use your phone normally
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Yes it throttles, but it does not help.
Ive heard CM13 alpha have only 1core up during screen on.
You can edit the core_ctl if you are on a stock kernel to limit online cpus
http://forum.xda-developers.com/xperia-z5/general/root-required-performance-battery-t3376233
Sent from my E6653 using XDA-Developers mobile app
prince10t said:
Yes it throttles, but it does not help.
Ive heard CM13 alpha have only 1core up during screen on.
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yes, via custom kernel with e.g. Intelli_plug,
otherwise kernels with msm_performance have 4+1 on all the time
Envious_Data said:
You can edit the core_ctl if you are on a stock kernel to limit online cpus
http://forum.xda-developers.com/xperia-z5/general/root-required-performance-battery-t3376233
Sent from my E6653 using XDA-Developers mobile app
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++
via core_ctl,
and that specific custom kernel has limited max frequency for both CPU clusters:
http://forum.xda-developers.com/showpost.php?p=66825948&postcount=74