[Q] is possible undervolt sgw kernel? - Samsung Galaxy W I8150

hy guys... i have a question..
is possile to undervolting the kernel of our phone such as galaxy s or s2?
my gs2 with ninphetamine kernel have a good battery life, around 24h with standard battery, 3g always on, and whatsapp sync, and at least 3,5h of display. i have undervolted ad undercloked my phone at 1ghz.
i have done the same thing at my SGW, i have only undercloked the cpu to 1ghz.
in short... i want to improve at max battery life..
Sorry for my bad english

its bad that no1 replies to us abt undervolting cuz we would really benefit from using it to extend our battery

jancilo said:
hy guys... i have a question..
is possile to undervolting the kernel of our phone such as galaxy s or s2?
my gs2 with ninphetamine kernel have a good battery life, around 24h with standard battery, 3g always on, and whatsapp sync, and at least 3,5h of display. i have undervolted ad undercloked my phone at 1ghz.
i have done the same thing at my SGW, i have only undercloked the cpu to 1ghz.
in short... i want to improve at max battery life..
Sorry for my bad english
Click to expand...
Click to collapse
as far as i know, it has already done by arco68, and it has already applied firstly in Bionic V2 ROM (released by cowithgun).
please check it in this link below
http://forum.xda-developers.com/showthread.php?t=1525387
thanks and regards

jancilo said:
hy guys... i have a question..
is possile to undervolting the kernel of our phone such as galaxy s or s2?
my gs2 with ninphetamine kernel have a good battery life, around 24h with standard battery, 3g always on, and whatsapp sync, and at least 3,5h of display. i have undervolted ad undercloked my phone at 1ghz.
i have done the same thing at my SGW, i have only undercloked the cpu to 1ghz.
in short... i want to improve at max battery life..
Sorry for my bad english
Click to expand...
Click to collapse
After informed by Rio, I would advise u all not to undervolt ur kernel, this can cause damage to GPU.

yewsiong said:
After informed by Rio, I would advise u all not to undervolt ur kernel, this can cause damage to GPU.
Click to expand...
Click to collapse
Is this true dude???
As i explain before in blacknotes hybrid 2 thread, currently i'm using that rom, which has the cow kernel as the rom kernel.
As u always to know too, that the cow kernel has already undervolted,
so my question is "am i possibly damage my gpu as long as i use the cow kernel in my hybrid 2gen..?"
Should i change my kernel??
Really need your suggestion here sir...
Thanks n regards
Sent from my GT-I8150 using XDA

bengonk said:
Is this true dude???
As i explain before in blacknotes hybrid 2 thread, currently i'm using that rom, which has the cow kernel as the rom kernel.
As u always to know too, that the cow kernel has already undervolted,
so my question is "am i possibly damage my gpu as long as i use the cow kernel in my hybrid 2gen..?"
Should i change my kernel??
Really need your suggestion here sir...
Thanks n regards
Sent from my GT-I8150 using XDA
Click to expand...
Click to collapse
I do not want to comment on others' work. Just do not undervolt it and everything will be safe. U can always flash another kernel. DXLM3 or XXLM8, they are good in performance.

yewsiong said:
I do not want to comment on others' work. Just do not undervolt it and everything will be safe. U can always flash another kernel. DXLM3 or XXLM8, they are good in performance.
Click to expand...
Click to collapse
Ok.. Thanks for your wise feedback sir.
Though, i've been already flashing my kernel too into xxlm8
Sent from my GT-I8150 using XDA

Related

Best kernel to OC to 1.5GHz on CM6?

Looking for some battery life here. What would you recommend?
Sent from my HTC Vision using Tapatalk
Honestly, with the stock CM kernel I stretch out 18 hours easily with heavy usage (non-stop texting )
That is of course with NO profiles @ 806 MHz using the ondemand governor. If I need more power I just simply crank up the processor, no need to stay OCed all the time
With that said, 806 MHz is perfect, I experience no lag at all. So there really is no need to stay OCed at 1.5MHz unless you want to kill your battery
Hehe, I actually love you for UPGRADING from a crap NS to a G2
omarsalmin said:
Honestly, with the stock CM kernel I stretch out 18 hours easily with heavy usage (non-stop texting )
That is of course with NO profiles @ 806 MHz using the ondemand governor. If I need more power I just simply crank up the processor, no need to stay OCed all the time
With that said, 806 MHz is perfect, I experience no lag at all. So there really is no need to stay OCed at 1.5MHz unless you want to kill your battery
Hehe, I actually love you for UPGRADING from a crap NS to a G2
Click to expand...
Click to collapse
I got some lag on ADW EX at the stock speed, so I decided to melt it away with buttery OC goodness. I'll actually see how it lasts today, and if it's killing me I'll try clocking down until I get something acceptable. I was just wondering if there were any especially good UV kernels or anything of the like.
TheBiles said:
I got some lag on ADW EX at the stock speed, so I decided to melt it away with buttery OC goodness. I'll actually see how it lasts today, and if it's killing me I'll try clocking down until I get something acceptable. I was just wondering if there were any especially good UV kernels or anything of the like.
Click to expand...
Click to collapse
What kernel did you end up going with?
I use pershoot's kernel and get pretty good battery life for being overclocked at 1.5ghz.
boost3d23 said:
What kernel did you end up going with?
I use pershoot's kernel and get pretty good battery life for being overclocked at 1.5ghz.
Click to expand...
Click to collapse
Right now just the stock CM6.1.1 kernel.
Sent from my HTC Vision using Tapatalk
TheBiles said:
Right now just the stock CM6.1.1 kernel.
Sent from my HTC Vision using Tapatalk
Click to expand...
Click to collapse
Go with pershoot's kernel.
PanCubano said:
Go with pershoot's kernel.
Click to expand...
Click to collapse
Is the one on ROM Manager compatible with CM6?

CPU Overclocking

Anyone has managed to overclock the cpu of Samsung Galaxy W?
I've tried with both SetCPU and CPU Master with no results, as the max frequency cannot be increased more than the default speed of 1400MHz..
For overclocking need custom kernel
solonix said:
For overclocking need custom kernel
Click to expand...
Click to collapse
Correct!!
Arco is working on a custom kernel, and maybe i will give it a shot if there is a good tutorial!
gr8! thx guyz
I've talked about this before.
Arco refuses to add higher speed frequencies to his kernel before making sure it's stable and smooth.
Sent from my Super Badass Android Phone w/ Chocolat Topping using XDA App
PoZZ
Warlord1981 said:
Anyone has managed to overclock the cpu of Samsung Galaxy W?
I've tried with both SetCPU and CPU Master with no results, as the max frequency cannot be increased more than the default speed of 1400MHz..
Click to expand...
Click to collapse
can someone tell me step by step how to overclock galaxy w to 1.8Ghz ???? thx
KezraPlanes said:
I've talked about this before.
Arco refuses to add higher speed frequencies to his kernel before making sure it's stable and smooth.
Sent from my Super Badass Android Phone w/ Chocolat Topping using XDA App
Click to expand...
Click to collapse
I see, can you tell me which file should I edit to add higher frequency on the kernel source? (just for experiment)
dewadg said:
I see, can you tell me which file should I edit to add higher frequency on the kernel source? (just for experiment)
Click to expand...
Click to collapse
acpuclock7x30.c
Sent from my GT-I8150

Undervolting.

What is Undervolting?
How Do I Undervolt?
What Does Undervolting do?
What app should I use to undervolt?
Im Just Really Confused...
CyberScopes said:
What is Undervolting?
How Do I Undervolt?
What Does Undervolting do?
What app should I use to undervolt?
Im Just Really Confused...
Click to expand...
Click to collapse
Undervolting reduces the voltage used by your phone giving u more battery. Most kernels are undervolted my default a small bit. If you want to undervolt get an app such as Setxperia(free) start off undervolting down steps on -25. Although undervolting too much will cause your phone to reboot. So find one which is stable for u and some kernels dont support custom undervolting just to let u know. Hope this helps
Sent from my GT-I9300
Thanks Mate

Cyanogenmod 7 and 10 overclocking questions

hi i'm looking to overclock my sprint epic 4g cpu up to 1.8ghz and also the gpu to 300mahz and 72hz refresh rate
on either cyanogenmod 7 or 10
what kernel and ROM and CPU/GPU overclocking apps should I use with voltage control and what (safe) voltages should I try for the cpu and gpu ARM and Internal voltages (what build number do I need for cm 7 or 10 (either stable or nightly)
also I noticed that the slide out keyboard shift and function keys don't work on cyanogenmod 10 stable build not sure about a nightly build
I'd like to fix the keyboard too
i'd like to be able to turn the boot logo on and off and possibly change it to a different one and also add a boot up sound to the logo
should I use the franko or samurai or maybe a different kernel ?
what modem should I use for max speed (EL30 FC09 FC19 or Nexus LF2 K2 ?) and compatible rom
I know how to install everything just need advice
If all of the above isn't possible at least I'd like to get the CPU to the highest possible speed past 1.2 ghz if possible most of all and not have random reboots or lockups or sleep of death and woking keyboard and least amount of bugs in the rom
Thank you so much in advance for any advice
Do your shift and Fn keys work if you hold them down when using them? Kind of like the way you would use them on a PC keyboard?
Sent from my SPH-D700 using Tapatalk 2
Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2
jeffreyjicha said:
Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
I used it before, it really messed up my phone.
glad to hear/see any follow ups.
using CM10.1 overclocked.
jeffreyjicha said:
Last thing I know of that had what you're looking for is CM9 with Samurai Kernel. The processor clocks to 1.5 Ghz and I believe the gpu is overclocked to 400Mhz. Idk what the refresh rate for the screen is, but that combo would probably be the closest to what you're looking for
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
^^^^this... there is no franco kernel here, that's for the epic touch... nobody has been able to overclock this phone past 1.6 Ghz... samurai had 1.6 at one point, but it was removed because there were stability issues with most phones trying to overclock that high... samurai has always been my favorite kernel from tw gb roms all the way to cm9... sadly development stopped when earthbound upgraded and there is no samurai kernel for cm10 or 10.1... everybodies phone is different and handles overclocking differently... best bet is to just keep trying combinations until you find your perfect match...
SubCool said:
Bump
Sent from my SPH-D700 using xda app-developers app
Click to expand...
Click to collapse
I don think you can get what you're looking for . the answers provided should be enough to tell you that this phone can't be oc'ed that much
Sent from my LG-MS770 using xda app-developers app
lmsomb said:
I don think you can get what you're looking for . the answers provided should be enough to tell you that this phone can't be oc'ed that much
Sent from my LG-MS770 using xda app-developers app
Click to expand...
Click to collapse
Um- the responses tell me its capable..
HOw do you individually OC the GPU?
SubCool said:
Um- the responses tell me its capable..
HOw do you individually OC the GPU?
Click to expand...
Click to collapse
Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...
flastnoles11 said:
Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...
Click to expand...
Click to collapse
I have a link to the CM9 kernel that goes to 1.5Ghz.
flastnoles11 said:
Not possible on cm10... with cm7 you'll have to dig around and search for samurai kernel...
Click to expand...
Click to collapse
I have used it on CM9, and got it to 1.4 comfortably, but the kernel itself was quarky as hell. The battery died when unclocked and- just all in all at bad kernel.
im curious on what he did to make it do that though. Was it an app he combined into the kernel? Did he expand something?
Technically- OC"ing is just like any normal OC. INcrease the multiplier or frequency and then manipulate the voltage to handle the work. But- THe couple app i foudn that do that- like uh... setcpu, targek or something all arent supported by our rom/kernel/ something. Its rather frustrating.
With the Packman ROM im using, he combined the Performance control into the rom, and you can actually change the voltages- but.. i cant make it go faster.
TO go on with that- i still cant find a way to OC the GPU. i see people saying they got it up to 400mhz. or something. But- HOW!? an app? Kernel again!? heck, i dont even know what the stock settins are. :/
GPU overclocking is achieved in the kernel.
Friendly Neighborhood Moderator
SubCool said:
I have used it on CM9, and got it to 1.4 comfortably, but the kernel itself was quarky as hell. The battery died when unclocked and- just all in all at bad kernel.
im curious on what he did to make it do that though. Was it an app he combined into the kernel? Did he expand something?
Technically- OC"ing is just like any normal OC. INcrease the multiplier or frequency and then manipulate the voltage to handle the work. But- THe couple app i foudn that do that- like uh... setcpu, targek or something all arent supported by our rom/kernel/ something. Its rather frustrating.
With the Packman ROM im using, he combined the Performance control into the rom, and you can actually change the voltages- but.. i cant make it go faster.
TO go on with that- i still cant find a way to OC the GPU. i see people saying they got it up to 400mhz. or something. But- HOW!? an app? Kernel again!? heck, i dont even know what the stock settins are. :/
Click to expand...
Click to collapse
1. He did it by being a kernel master... 2. they aren't supported because of the kernel you're using. 3. And again, the kernel you're using. The only way to overclock the gpu is with the samurai kernel.
4. And most importantly, for everything you want out of a kernel, it's about time to learn Linux and build your own kernel...
flastnoles11 said:
3. And again, the kernel you're using. The only way to overclock the gpu is with the samurai kernel.
Click to expand...
Click to collapse
Aww man I miss Samurai's 400MHz GPU OC... But the Voodoo defaults there is VERY terrible... Just why isn't there a kernel with ONLY GPU OC (i.e. no CPU OC up to like 1.4GHz (I think games depend more badly on GPU) and no Voodoo and such)...
Sent from HTC Incredible S @ PACman v21
If you build it, they will flash it!
Yes, for those looking for an easy way out, it's not going to happen. Learn to make a kernel then learn how to manipulate the settings. If it was easy then everyone would be doing it. No one has any other spoon fed answers.
I think not having an easy way out may be the definition of xda-developers. Forget where I read it but it's about the journey rather than the destination, which I know doesn't hold true for every one but I know it does for me.

Differences between custom kernel

Hi, i'm new to galaxy w world, and i'm reading about custom kernel (castagnaI, forfivos and hadi), but i'm not sure on what is better for my phone...
is there any comparison chart, or similiar, that can help users choosing? I mean, there are so many variables to take in consideration, like RAM, voltage and battery life, hd video recording and so on..and it's difficult for a newbie to get to the point, if you know what i mean
I think castagnaI has a great one, but his latest release gave us more ram by losing 720p recording. Hadi's kernel is also great, but the version that he posted with more ram anda working camera got a few reports that day it is not so stable(I use it and it is GREAT). Forvivo has the best JB kernel and a good ICS kernel.
Sent from my GT-I8150
So, to have a good mem and a working camera (720p i mean), you suggest hadi's kernel? What about forvivo for ICS? I'm running latest CM9
Forfivo ICS is stopped I guess. But if you want to, experiment around with his v3 and v1.
You may wanna keep a copy of v1 in your memory card because so far I used its the most stable kernel for everyday usage, but certainly not gaming needs.
To my opinion I don't think I'll capture any precious moments using my phone. SD quality is far more than enough for me to store in my phone if needed, so a little sacrifice is okay. But maxmem is just abit off, unless you don't mind using a few mins to swap flash everytime between your game time and afterso.
7amada100 said:
I think castagnaI has a great one, but his latest release gave us more ram by losing 720p recording. Hadi's kernel is also great, but the version that he posted with more ram anda working camera got a few reports that day it is not so stable(I use it and it is GREAT). Forvivo has the best JB kernel and a good ICS kernel.
Sent from my GT-I8150
Click to expand...
Click to collapse
i confirm this issue too. after using my kernel for a day the packet data is sometime "lost". maybe this is due to SFB (i think), because after building a test kernel with reverted network scheduler the packet data problem is definitely fixed.
castagna's is great one, i used it about a month and it fits my needs of battery life. but beware that in some hardware extreme UV maybe unstable
forfivo's ics kernel gives nice stability. somepeople prefer v1 over v2 or v3. for the JB kernel you are given choice of bigmem ram and stock stock ram. bigmem sacrifice HD playback and recording for bigger RAM(better multitasking)
overall i still love my own kernel(i don't mean to promote my own kernel and discredit other kernel). i set my own clock freq to 1GHz and phone still runs very smooth which means more battery life for me and cpu governor perfectly fits the daily needs
Thanks for your complete answers!
My need is for a smooth and fast phone, with much of is hardware features available, a minimum daily battery life, and some good multitasking. I'm not so interested in gaming.... With this conditions, what I should test?
Inviato dal mio GT-I8150 con Tapatalk 2
MrFrem82 said:
Thanks for your complete answers!
My need is for a smooth and fast phone, with much of is hardware features available, a minimum daily battery life, and some good multitasking. I'm not so interested in gaming.... With this conditions, what I should test?
Inviato dal mio GT-I8150 con Tapatalk 2
Click to expand...
Click to collapse
you can test castagna or forfivo's first. i am quite aware that my kernel will not be good for internet (at least for the latest release with sfb activated, need time to test everything for next release )
MrFrem82 said:
Thanks for your complete answers!
My need is for a smooth and fast phone, with much of is hardware features available, a minimum daily battery life, and some good multitasking. I'm not so interested in gaming.... With this conditions, what I should test?
Click to expand...
Click to collapse
If you don't game, a good suggestion is to use hadi's or castagnal's bigmem, with no HD recording.
Then underclock max frequency to around 1ghz. Your battery life will be obviously prolonged
btw, connection problem in my kernel has been fixed i guess
having clock 1GHz is enough for me, that quite prolong my battery life
KiD3991 said:
If you don't game, a good suggestion is to use hadi's or castagnal's bigmem, with no HD recording.
Then underclock max frequency to around 1ghz. Your battery life will be obviously prolonged
Click to expand...
Click to collapse
I'm not a gamer, but I like hd recording. I'd like to use all the stuff of this phone. Maybe I could wait until hadi's fixed kernel is out. In the meantime, I could underclock to 1ghz to save battery life.
How can I see the amount of ram that kernel made available, from the phone?
Inviato dal mio GT-I8150 con Tapatalk 2
MrFrem82 said:
I'm not a gamer, but I like hd recording. I'd like to use all the stuff of this phone. Maybe I could wait until hadi's fixed kernel is out. In the meantime, I could underclock to 1ghz to save battery life.
How can I see the amount of ram that kernel made available, from the phone?
Inviato dal mio GT-I8150 con Tapatalk 2
Click to expand...
Click to collapse
hmm you can try the one "my own config" or "hadiconfig" it has 376-377 available RAM with hd recording working. i've been using this config for about 4days but still nothing goes wrong to my phone
MrFrem82 said:
I'm not a gamer, but I like hd recording. I'd like to use all the stuff of this phone. Maybe I could wait until hadi's fixed kernel is out. In the meantime, I could underclock to 1ghz to save battery life.
How can I see the amount of ram that kernel made available, from the phone?
Inviato dal mio GT-I8150 con Tapatalk 2
Click to expand...
Click to collapse
Go to Settings, About Phone(most likely the last option)
There will be a section about how many ram you have.
I've 352MB of ram available. 20/40mb would improve performance and multitasking significantly?
What governor is better with 1Ghz?
Inviato dal mio GT-I8150 con Tapatalk 2
for me it's quite good for multitasking
i tweaked lulzactive and smartassv2. i'm quite sure lulzactive has a good prospect as one of the smoothest and most battery saving governor. if you are unsure you can use smartassv2
if i am a gamer n also wan some basic multitasking use,can any 1 suggest a kernal for me?i am now using forfivo bigmen kernal,it is good,but i hope can get the smooth n best kernal for gaming~
thx n sry for my broken eng~
Sent from my GT-I8150 using xda premium
yugioh93 said:
if i am a gamer n also wan some basic multitasking use,can any 1 suggest a kernal for me?i am now using forfivo bigmen kernal,it is good,but i hope can get the smooth n best kernal for gaming~
thx n sry for my broken eng~
Sent from my GT-I8150 using xda premium
Click to expand...
Click to collapse
The way you type, its assumed you're using JB. Use forfivo v2. For now JB does not have alot of kernel developers. Or you can try hadi's JB kernel for gaming purposes.
thx for ur suggestion...i will try it when free...can u tell me how to flash the kernal?
Sent from my GT-I8150 using xda premium
yugioh93 said:
thx for ur suggestion...i will try it when free...can u tell me how to flash the kernal?
Sent from my GT-I8150 using xda premium
Click to expand...
Click to collapse
Go to CWM wipe cache/dalvik cache, Flash the kernel then reboot. Some kernels don't need wiping, the dev will write when it doesn't need
Sent from my GT-I8150 using xda app-developers app
Ok, i think i will try hadi's own config...hope everithing goes well!
edit: i just see that v1.4 is out! good work man
do i need to wipe cache/dalvik before flashing? i'm from cm9 kernel
MrFrem82 said:
Ok, i think i will try hadi's own config...hope everithing goes well!
edit: i just see that v1.4 is out! good work man
do i need to wipe cache/dalvik before flashing? i'm from cm9 kernel
Click to expand...
Click to collapse
not needed

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