Develop Bugs

SetCPU saving power potential?

Heya,
I've heard of this SetCPU program, and figured it has some solid potential of saving battery power.
My question is - does it work? I've read several post claiming that SetCPU doesn't work on HTC phones.
If it does - will using the "Mix \ Max frequency" mode will save battery during stand by and normal usage, or just slow down the phone?
Using Rooted Desire, LeeDroid 2.2d.

Its primary use is to overclock the CPU, its secondary use is to create profiles and reduce the clock or change the governor. This will improve battery life slightly but also decrease responsiveness, depending on how far you go.
You'll need root if you want to use it.
To really increase battery life you have to use a custom ROM with an undervolted kernel.

So you're saying that the saving in battery life is insignificant considering the slowdown in performance?

yes, you use LeeDroid which is undervolted, thus perfect conditions.
It also uses a custom governor 'Smartass' which gives you best performance while using it and limits the max. clock while sleeping. That's the most common method to increase battery life with SetCPU while maintaining performance. So no, you don't need SetCPU, LeeDroid handles everything perfectly already.
However, the Desire has a very powerful CPU, compared with other Smartphones. So you can use SetCPU to limit the clock to maybe 700MHz or 800MHz. This will increase the battery life but also reduce the processing power. If you don't play games, don't do a lot of simultaneous things or browsing huge websites, don't use heavy loaded homescreens, it's possible that you don't notice the reduced processing power.

Thanks again
I guess there is no damage to the SnapDragon if I lower clock speeds a bit...
But, if I want to do some overclocking - how far is it safe to go?
When I OC'ed my Q6600 CPU I used the TheremalRight Extreme 120 with two Slip Stream fans to cool it off.. So, will heat damage be a constant threat to an overclocked Desire?
I currently live in Israel, and it's hot as hell even on stock speeds

CoreOxide said:
Thanks again
I guess there is no damage to the SnapDragon if I lower clock speeds a bit...
But, if I want to do some overclocking - how far is it safe to go?
When I OC'ed my Q6600 CPU I used the TheremalRight Extreme 120 with two Slip Stream fans to cool it off.. So, will heat damage be a constant threat to an overclocked Desire?
I currently live in Israel, and it's hot as hell even on stock speeds
Click to expand...
Click to collapse
I for one has chosen to disable the default powersave in Auraxt sense, and then using SetCPU to control it, i get a day of power easily, and still goes to bed wit 50% power, that is with stock clocks on normal usage, but with minimum power (245) on screen off

Re overclocking:
To reach high clock speeds you also increase the voltage on your PC, else you can't increase the frequency that drastically.
Because you can't improve the cooling on the desire you have to keep stock voltages but also can't overclock that much.
The overclocking methods on the desire keep the voltage at stock values or even lower (defrost rom).
I don't know the voltage values for LeeDroid.
I it shouldn't get warmer. In the worst case it will crash and reboot until you reduce the clock speed.
Sent from my HTC Desire using XDA App

[Q] setvsel cpu damage

hey guys, just wondering will using a lower vsel damage my cpu and/or battery?
i have previously beein using milestone overclock on 1ghz and 60 vsel and am adding setvsel into the mix, also any ideas on starter settings? thanks
also could someone just give me a heads up on what vsel actually IS

I don't believe there are any studies that show effects of long term use of lowering the voltage, which is what you are doing with vsel in order to save battery juice...or you could increase the voltage but that defeats the purpose and also heats up the battery which leads to shorter life span. Many use it without reporting any damage to battery or cpu, I believe it's safe (however, if you are overheating you might fry the battery or cpu, so you'll need to moniter and play with settings to get the desired effect without any overheating issues).
With regards to setvsel, there are reported issues from users with different roms...from what I've read (and you can do your own research to see if this is what you are seeing...this is the conclusion that I've come to by reading a lot of threads), it is better to use milestone to overclock and setcpu to lower the vsel.
With that being said, I've used them all and like setvsel so keep going back to it...but I've been having some issues lately so I've removed setvsel to see if that is what is causing some problems (too early to tell).
Oh, and as for settings...pop on the overclocking/undervolting thread in the development section to see a lot of different settings and remember that what works for one user might not work for you...you'll have to experiment a bit to find your ideal setting.

oh okay i think i might go back to my old settings with milestone overclock and setcpu and just lower the vsel! i was under the impression for some reason that lowering the vsel would heat the battery. Thanks!

I'm no expert to be honest, I'm more of a research kinda person. From what I've researched, undervolting can help keep temps down, and may particularly help when you overclock (as overclocking is stressing the cpu to go beyond it's normal operating design hence it may heat up...supplying it with less power, or voltage, is what helps keep the temps down.
Of course, this is given you find the optimal setting for your phone, and as it seems from reading through these forums, many users have experienced completely different results using the same settings (i.e., one user will have a stable setting without any problems while another user on the same rom using the same settings will have crashes and/or issues like overheating). Doesn't seem right, but it is what it is

yeah ive read through most of that stuff too, i went down to 1ghz at 51 vsel, seeming stable, but i decided to go with 54 anyway

1.1 GHz @ Stock vsel for over a month without any issues...I hope it lasts.
Sent from my MB525 using XDA App

Hi,
I've also read a lot regarding the underclocking 'dangers' but couldn't find anything to prove that there is such an issue. I think that it is an urban myth spread everywhere by people asking if there is a danger with low vsel [but that are never getting a positive answer on it].
The only thing I found using setvSel is that I had to first install Milestone Overclock and load its module prior to start setvsel. There is a way around it, but requires you to copy files in the system folders and change their permissions. I find that my way is much easier.
As far as over-heating goes, it's an overclocking thing; not underclocking.
My Defy is set at 900Mhz and really, I don't see the point of going much higher: everything runs smooth and lag free already.
vsel: 21/300; 32/600; 43/900 - 90% up_threshold
Been like that for about a month now and never experienced any problem at all.
The underclocking is great for saving battery; no exact numbers to give here but it feels like my battery now last 2 times longer. I can easily get 4 days between charges with low/moderate usage and would get to 6+ days "IF" I could stay away from games and having the screen ON for long sessions of browsing/video watching.
I tried SetCpu before but I didn't like the interface; the simplicity of SetvSel is really nice.

i use setcpu for scaling and profiles, and run 18/300, 36/600, 50/1000 stable and smooth as

Undervolting is not a bad thing at all. It means less Watts consumed for running (Watts = Voltage x Amperage), less of your battery consumed.
Ussually companies test a large batch of components and how they react on different voltages and freqvencies, and then they decide for a voltage that works with all components and that is safe for all cases. Eg. when they have different CPU speeds and thus different options for CPU's this is one way to decide which one work at 3GHz and which one at 2.7 GHz (the other one is demand for components).
Phisically you will not have any problems and you can't damage your phone by undervolting, so no problem here, only possible software problems if you go too low.
Advantages :
+ Lower processor temperature
+ Lower phone temperature
+ Longer battery time
+ Longer components life
Disadvantages
- Stability issues (freeze, artefacts, slowness)

maxi2mc said:
Disadvantages
- Stability issues (freeze, artefacts, slowness)
Click to expand...
Click to collapse
You know, I was recording a video and when playing back noticed that there were squiggly lines that went through the video a couple of times (in a two minute clip). This was the first time I saw this...and have recently lowered vsel by 2 on vsel3...could that be the artifacts that you are mentioning?
I just figured it perhaps I was too bouncy with the phone while recording making it glitch...but now that I see this post I'm thinking maybe I undervolted too much...what do you think?
My settings: 54/1000 44/700 28/300

I know what people mean by same settings don't work for every phone even if it's the exact same model. My Defy won't underclock as much as others. I'm using SetVesel, and I've been able to drop 5 points from each, and that's about it before it reboots itself. I only tested undervolting, but I mainly overclock to get as much speed as I can, and give it enough juice to run super fast. I'm current running [email protected], [email protected], [email protected] Threshold at 75%. The highest the temp ever got was 112F, and that was after playing a game for about an hour. Usually it stays below 90F for normal use. I get around 17-20 hours out of it with screen on time at about 3 hours @ 50% brightness. I've been running these settings about a month, and have not had any issues.

If you put something like 100vsel will the phone accept and then burn? Is there any protection? Does anyone know what's the highest acceptable vsel?
Just for curiosity...

im pretty sure 80 is the highest you should EVER use and that'll significantly increase the chances of your phone burning out. @bobbyphoenix you should be able to lower your vsels a fair bit or your really unlucky! i run a lower vsel for 1ghz than u do for 700mhz smooth and stable

stewi21 said:
im pretty sure 80 is the highest you should EVER use and that'll significantly increase the chances of your phone burning out. @bobbyphoenix you should be able to lower your vsels a fair bit or your really unlucky! i run a lower vsel for 1ghz than u do for 700mhz smooth and stable
Click to expand...
Click to collapse
CM7, rather non-technical person here. I seem to have a very happy phone at setvsel settings of [email protected], [email protected], [email protected], 86%. Been running this for the month or so since I rooted and the phone feels like it was made for this config. I've never seen the temp above ~32c. My 2¢.

[Q] How do you Undervolt?

So i have Daemon Controller 3.2 something and I've seen a lot of places mention undervolting. I looked around but couldn't find much information on it.. nothing extensive anyway. So my question is: what are the good things about undervolting (besides battery life) and what are the bad things?
If i undervolt and improve battery life does it decrease performance? Any info here would be awesome. Thanks!

Info here
http://forum.xda-developers.com/showthread.php?t=1611620

PatimusXPrime said:
So i have Daemon Controller 3.2 something and I've seen a lot of places mention undervolting. I looked around but couldn't find much information on it.. nothing extensive anyway. So my question is: what are the good things about undervolting (besides battery life) and what are the bad things?
If i undervolt and improve battery life does it decrease performance? Any info here would be awesome. Thanks!
Click to expand...
Click to collapse
The only thing I can think of that you might find as a benefit from U/V is improved battery life.
If you UnderVolt too far you risk freezing and/or damaging your device.
If you successfully undervolt without going too far and causing problems, you should see no negative effect on performance. Just better battery life.
I typically U/V around 50 for all clock ranges. I have never had any negative results doing this. But I haven't been able to prove I get better battery life either. I just take faith in the fact that I theoretically am. I do get wicked good battery life, but that is probably due to many things including kernel, rom, radio, clock speed settings, U/V settings, and other mods. All these together produce noticeable results, where any one by itself would not give any substantial or noticeable improvement.

TheAtheistReverend said:
The only thing I can think of that you might find as a benefit from U/V is improved battery life.
If you UnderVolt too far you risk freezing and/or damaging your device.
If you successfully undervolt without going too far and causing problems, you should see no negative effect on performance. Just better battery life.
I typically U/V around 50 for all clock ranges. I have never had any negative results doing this. But I haven't been able to prove I get better battery life either. I just take faith in the fact that I theoretically am. I do get wicked good battery life, but that is probably due to many things including kernel, rom, radio, clock speed settings, U/V settings, and other mods. All these together produce noticeable results, where any one by itself would not give any substantial or noticeable improvement.
Click to expand...
Click to collapse
Okay cool, I get pretty good battery life too so maybe I'll just skip UV.. no awesome reward just a lot of risk

There is a balance for reward vs risk there. Undervolting by 50 isn't going to put your phone in danger. But if it gets me a couple percent/an hour of battery life, why not?
I'm a believer in doing all the little things that add up to something substantial. Undervolt, Battery MOD, wifi policies, screen on time, charging habits, Kernel, ridding of problem apps, using things like Juice Defender, etc. These all add up to give me better battery life than you can find on almost any non-Max phone. But it takes all of them together, and a constant eye oout for something else I could be doing.

Undervolting may help you.
I havent been a big fan...on my og Incredible it caused nothing but problems with signal...so I dont anymore although the Sense kernel by Dres is undervolted a tad.
Give it a shot and start with -25 increments. Will it affect battery life? Maybe, but engineering tends to dictate that lower voltages dont always affect discharge rates. Higher voltages certainly affect consumption though (and can also lead to major problems).

TheAtheistReverend said:
The only thing I can think of that you might find as a benefit from U/V is improved battery life.
If you UnderVolt too far you risk freezing and/or damaging your device.
If you successfully undervolt without going too far and causing problems, you should see no negative effect on performance. Just better battery life.
I typically U/V around 50 for all clock ranges. I have never had any negative results doing this. But I haven't been able to prove I get better battery life either. I just take faith in the fact that I theoretically am. I do get wicked good battery life, but that is probably due to many things including kernel, rom, radio, clock speed settings, U/V settings, and other mods. All these together produce noticeable results, where any one by itself would not give any substantial or noticeable improvement.
Click to expand...
Click to collapse
I use the app SetCPU for CPU profiles. If I use something like Incredicontrol to undervolt, will it mess up my phone?

zaza224 said:
I use the app SetCPU for CPU profiles. If I use something like Incredicontrol to undervolt, will it mess up my phone?
Click to expand...
Click to collapse
The only way to mess up your phone is to U/V too far and have the "Save for Boot" box checked and no NAND backup.
Make your NAND and run the U/V settings you choose for a day or two before you check the save for boot box. If it freezes up back off your settings a notch and run it for a couple more days.
I run about 50 under without any problems.

[Q] UV, UC, other Kernel options.

Android 4.2.1
CyanogenMod 10.1 Snapshot M1 (21/1/13)
Franco Kernel R364
I'm trying to maximize my battery time.
(Power mode BeastlyBattery 192MHz~1036MHz, Governor: Lazy, IO Scheduler: deadline, Screen of Max Frew: 384MHz)
I want to UV my CPU (and maybe IVA and GPU also, does it helps too?) to save some battery.
Should I just decrease the voltage a bit, use stability test app and keep going till there will be errors,
or I can just decrease like someone else on the web and then keep going..?
Can it do something to the device? (because Its just undervoltage..)
For how long I need to run the stability test?
I saw this topic:
http://forum.xda-developers.com/showthread.php?t=1599025
and he says:
"1. It has been tested that the 700Mhz frequency is prefereable over the 300Mhz one, due to the drops on frequency signal of the phone."
Anyone tested this?
Does UV degrades preformance?
What is SmartFlex?
Anything else I need to know about that?

Im gonna make this one quick, so my apologies if I don't address your questions directly.
Prior to my Galaxy Nexus, I had a T-Mobile SGSII. I too had the belief that undervolting/clocking would improve my battery life substantially. It seemed to work but then I was only getting the results that I wanted to get, and thats because I went to extremes to lowering my screen brightness to minimum and using my phone a fraction of what I used to.
With the help of others and trial and error, my major conclusion is that undervolting/clocking, though normal headset use will not improve your battery life by a landslide. Android is so well optimized to save you as much battery as it can. Sure there are things here in there that interrupt that optimization such as bugs or kernel issues but that something even undervolting/clocking will not be able to solve.
If you do go into undervolting/clocking your device, please keep in mind that the most you will probably get out of it is maybe 45 minutes to 1hr extension, but thats not display time.
What you can do to improve your battery life is turn off whatever sync services you don't use, lower your screen brightness ( the display is the major battery hog in the GN and SAMOLED devices), use dark wallpapers and dark themes if apps support it, use wifi, disable 3G when not in use. The radio you use can also potentially affect your battery life and signal quality.
Those are just a few suggestions, the rest is up to you.
Good luck!
P.S. Kernels also add variation to the longevity of your battery life. It's been a very long time since I touched CM10 so I'm not gonna go and defame that ROM but do try something else that possibly offers better battery life. If MODs are a MUST for you, then you will be faced with a lower battery life compared to stock based ROM's. It won't be an extreme difference but the difference will be there. If I may suggest a ROM, try this one. I can honestly say I can get up to 3-4 hours of display time on it with about a 12 hour standby.

I read a lot on the web that it does help to battery time.. :S

anyone?

You're not going to see much difference. Running the cpu at a lower clock speed just means it will take longer to complete the same operation so you'll use just as much battery.

063_XOBX said:
You're not going to see much difference. Running the cpu at a lower clock speed just means it will take longer to complete the same operation so you'll use just as much battery.
Click to expand...
Click to collapse
And undervoltage?
Different overnor?

Undervolting will have minimal effect during actual use and a governor is based on specific user needs. One might save me battery while another works better for your usage. You need to actually mess with setting instead of just asking others what they use.

[Q] battery is very hot

Hi,
When I use from my phone and run game (not high end) ,back of my phone getting very hot and burning my hand.
life time battery without play gaming and just send several sms and little talking is one day also i installed power saver app.
What can i do about it? battery is corrupted? or is other problem?
please help, i buying this phone 20 days before.
thank you

I was having the same issues when I first got my G Pro... I called LG tech support and they Had me do a soft reset....
Pull out the battery with the phone on.
Leave the battery out for 5 minutes.
Replace the battery, and turn in G Pro..
Solved my hot battery problem....:thumbup:

The main culprit is the ondemand governor that kicks up the CPU frequencies to max (1.7GHz) with just the slightest touch. Doesn't matter what kind of games you play, it's still stressing the CPU. Since we don't have any stable / feature rich kernels providing the better governors, interactive is the best bet to reduce heat and save battery life while not making a noticeable hit on performance. Only noticed a 2 fps drop when doing the benchmark on Epic Citadel with it on the highest quality. Still nice and smooth!
Sent from my Vanir 4.3 LG-E980

my battery usually 41.2degrees

李春雷 said:
my battery usually 41.2degrees
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Click to collapse
should be only mid 30s. My current temp is 23C. I run interactive.