Kernels for less battery consumption ? - Desire HD Q&A, Help & Troubleshooting

Are there any kernels which is especially created for less battery consumption?
I dont need performance, I just need to increase battery life...

Maybe its most important how configurate the frequencies & cpu governors mode than the kernel that u are flashing...
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Sense Rom with good battery life

So guys, i definitely need a sense rom because of the look ( especially the music player, 3.0 lockscreen like in insertcoin and apps) and the fast writing speed of my sd card...
i tried leedroid, rc hd mix, maybe a froyo rom would be better? Or recoment a different kernel?
currently i use insertcoin ( newest stable release), but the battery is so bad i can hardly get a day out with normal use... wifi gps off brioghtness low...
can u tell me a good rom? would appreciate it
I find al GB ROMS have poor battery life then I changed the kernel to MANU's and it was much much better. Maybe try a different kernel?
can u recommend me a kernel?
Yeah this one is really good for me but is different experience for every user...
http://forum.xda-developers.com/showthread.php?t=883598
Gingerbread-HAVS-AXI-CFS
Thx dude, i'll try this.
But i gotta 2 questions:
Can i return to my standart kernel (insertcoin eg) and how can i do this?
Is this kernel also compatible with insertcoin? (sense- based)
With Gingerbread I think the Reflex S is pretty OK for the battery or else it is possible to undervolt further.
Maybe you just need to calibrate your battery, if you change your ROM a lot. I use BatteryCalibration from Market and it seem to do the job.
Do i have to do a full wipe?
Battery calibration does not work for me D the percentage drop fast to 99% percent again and so on
Yeah, I would do a full wipe. Especially if you are moving between different ROM's.
So far, the AuraxTsense 8.4 (Android 2.2) was my favorite in terms of battery usage - but since moving to 2.3.3 based ROM's, my battery drops faster when using the phone, but lasts longer when in standby.
what would u recomment then? returning to froyo or stay with gingerbread?
Well, if Battery Life is your primary concern, you would probably get the best results with a Froyo ROM, since the kernels are further in development.
However, in terms of features etc. I think the Gingerbread is better. I personally like the Sense 3.0 improvements etc. So I am just crossing my fingers that battery life will gradually improve further
My experience is, that Gingerbread ROMs in general are battery hungry. As for sense ROMs i can say that LeeDroid suits me best regarding battery life. At the moment im on oxygen and get a day out of it with normal use.
Best results with battery life i had with LeeDroid Froyo ROM (v2.4 i think). Smartass governor and screen off - 245mhz max/min sometimes got me 2 days without charging.
Maybe this helps you finding a solution.
By the way, you can also improve your battery life by turning off the various Auto Sync features, for example Sense Sync, Facebook, Weather etc...
So i've flashed reflex s now, hoping the battery will do better tahn insertcoin.
If not, i will probably change to leedroid froyo- are there any important disadvantages for froyo roms? like speed or something?
i've tried many sense roms and never got a good battery life
now using MIUI rom .. its GUI is close to sense and good battery life
24h and i still have 40% off battery on InsertCoin 1.0.8 CM7,wifi is always on,data is enable,set brightness to auto. Try charge your desire to 100% turn it off,connect charger again and wait till green led is up,than turn on your phone to fastboot menu (power and volume down) and clean battery stats,reeboot.Also You can use battery calibration app from market
Sent from my HTC Desire using Tapatalk
Hi
I use manu 2.0 cfs kernel and it is batterie efficient, most of time 48h before recharging.
Franck
Sent from my HTC Desire using XDA App
franckleroy said:
Hi
I use manu 2.0 cfs kernel and it is batterie efficient, most of time 48h before recharging.
Franck
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
thx c: which rom do ya use?
At first, the recommended manu kernel won't be working with sense roms, because it's an aosp kernel (so made for aosp roms).
Second, using setcpu and setting a screen off profile for it really improves standby battery power. I set it mine to:
128 - 442 mhz ondemand governor
Third, the display is the biggest and fastest battery drainer, no matter which rom you are using.
k-c-0 said:
My experience is, that Gingerbread ROMs in general are battery hungry. As for sense ROMs i can say that LeeDroid suits me best regarding battery life. At the moment im on oxygen and get a day out of it with normal use.
Best results with battery life i had with LeeDroid Froyo ROM (v2.4 i think). Smartass governor and screen off - 245mhz max/min sometimes got me 2 days without charging.
Maybe this helps you finding a solution.
Click to expand...
Click to collapse
If you use smartass governor, you do not have to set an extra profile for screen off. This governor automatically uses the min cpu frequency when the screen is off.
smartass governor – is based on the concept of the interactive governor.
I have always agreed that in theory the way interactive works – by taking over the idle loop – is very attractive. I have never managed to tweak it so it would behave decently in real life. Smartass is a complete rewrite of the code plus more. I think its a success. Performance is on par with the “old” minmax and I think smartass is a bit more responsive. Battery life is hard to quantify precisely but it does spend much more time at the lower frequencies.
Smartass will also cap the max frequency when sleeping to 352Mhz (or if your min frequency is higher than 352 – why?! – it will cap it to your min frequency). Lets take for example the 528/176 kernel, it will sleep at 352/176. No need for sleep profiles any more!
Click to expand...
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http://www.ziggy471.com/2010/11/07/smartass-governor-info/
I am having the same problem with GB roms no matter how many times you calibrate the battery there is no improvement .

Kernel development just focused on speed

I bought a bigger battery a while ago because I was always needing a charger everywhere I went. Now with all the great kernels out there my double capacity battery out over kill! Lol
I was wondering if any of the developers out there have ever considered developing a kernel where battery life wasn't a consideration, and performance was it's only focus?
Swiped on my Gnex
Set the CPU scheduler to Performance. It will eat your battery alive and give you all the speed you want.
meminiau said:
I bought a bigger battery a while ago because I was always needing a charger everywhere I went. Now with all the great kernels out there my double capacity battery out over kill! Lol
I was wondering if any of the developers out there have ever considered developing a kernel where battery life wasn't a consideration, and performance was it's only focus?
Swiped on my Gnex
Click to expand...
Click to collapse
Install this >>>http://rootzwiki.com/topic/14685-16-mar-glados-v124/ buy his app from market and u can go as fast as ur phone will let u, there is no faster kernel; )
I'm running 584 gpu
Core OC 120%
And OC to1600 and its 100% stable!!
Yeah, the newest Glados has OC slots up to 2GHz. Push your phone as far as you dare.

[Q] Little confused from UV

Hello Androidies
So i UV my sgn2 & then i googled it to know if there is any benefits from that & the results made me confused if UV is useful
Here what i understood from diffrent members in different thread & forums :
*UV affects the cpu performance & make it process more to get the job done & thus will increase the battery consumption & heat (weird a bit & not logical for me :-\ )
*UV is good for OverClocking to make the phone more stable, also its a bit weird
*UV may cause better battery life a little bit.
Those are the most answeres attracted me & i am awaiting your INITIATIVE guys to seek the best logical & practical answer...
Thanks in advance
Sent from my GT-N7100 using Tapatalk 2
Undervolting makes the cpu use marginally less power than stock at whatever frequency, so you should see some battery life improvements with the same use. I don't think whoever wrote that first point in your post understands what undervolting is. Unless you undervolt too far then it shouldn't affect the cpu performance at all.
Sent from my GT-N7100 using xda app-developers app
Usualy if you undervolt by -50 or -75 Mv you should be fine. Start with - 50 and if all goes well lower it again by -25.

[Q] Overclocking Underclocking - Overvolting Undervolting

I'm interested in underclocking/overclocking my S3 to save battery life primarily. I understand that underclocking is different than using a CPU governor. What is the difference exactly?
Also, is it possible to underclock using the CM10 nighties? I understand that underclocking is dependent on the kernel you use. Does the standard CM10 kernel have this capability? Or does anyone know if its possible to get another kernel that CM10 is compatible with that has the capabilities to underclock?
thanks!
This thread would be a good place to start reading.
http://forum.xda-developers.com/showthread.php?t=1369817

How can I overclock my gpu

I have rooted my phone and I wanna overclock my gpu, but I don't know what app to use. I also wanna oc my CPU, if you know how, please tell me
As a phone doesn't have active cooling, this is generally unwise, as you'll rarely get significant performance gain while dealing with increased heat, which can be damaging. Custom kernels generally allow fine grained CPU and sometimes GPU control, but it's typically the opposite of overclocking - developers try to use the lowest voltages possible on the smallest cores while still maintaining decent performance, to reduce power consumption and extend battery life.
V0latyle said:
As a phone doesn't have active cooling, this is generally unwise, as you'll rarely get significant performance gain while dealing with increased heat, which can be damaging. Custom kernels generally allow fine grained CPU and sometimes GPU control, but it's typically the opposite of overclocking - developers try to use the lowest voltages possible on the smallest cores while still maintaining decent performance, to reduce power consumption and extend battery life.
Click to expand...
Click to collapse
Yes, but I just want to maximize performance, I have two phones, and I want to overclock this one, so it's faster. I will take care of cooling. I don't care much about battery life, since it's not my daily driver. So what app should I use ?
bubleman_2 said:
Yes, but I just want to maximize performance, I have two phones, and I want to overclock this one, so it's faster. I will take care of cooling. I don't care much about battery life, since it's not my daily driver. So what app should I use ?
Click to expand...
Click to collapse
You can't just use an app. You have to use a custom kernel, and the app used to control kernel parameters depends on the kernel.
"Stock" kernels are not modifiable via app.
V0latyle said:
You can't just use an app. You have to use a custom kernel, and the app used to control kernel parameters depends on the kernel.
"Stock" kernels are not modifiable via app.
Click to expand...
Click to collapse
Do you know a kernel that is overclocked? I tried Ryzen kernel and I still can't overclock it.
bubleman_2 said:
Do you know a kernel that is overclocked? I tried Ryzen kernel and I still can't overclock it.
Click to expand...
Click to collapse
I am not familiar with Redmi devices, so no. I would suggest looking through the various custom kernels here, and if the description of the kernel doesn't answer your question, ask in the threads. However, pursuant to Forum Rule #5, please don't post your questions more than once.
So what kernel and app should I use to oc it?
.

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