Grand rebooting frequently - Galaxy Grand Duos i9082 Q&A, Help & Troubleshootin

My Grand is rebooting frequently after installing carbon rom and nebula kernel
When I run any game, It starts to reboot. This happens even , when the screen is off.
That's why I reverted back to cm11

Ateekujjawal said:
My Grand is rebooting frequently after installing carbon rom and nebula kernel
When I run any game, It starts to reboot. This happens even , when the screen is off.
That's why I reverted back to cm11
Click to expand...
Click to collapse
It's not because of ROM man.... It's kernel who giving random reboots.. U really should read at least few pages of it before flashing brother ... It's under development... Hope we get a stable kernel (nebula kernel ) soon.....
Till then.. Just use pre included one in ROM
Hope i helped
Sent from my GT-I9082 using Tapatalk

Nebula kernel is really unstable, I suggest you not flash it if you're planning to use it as a daily driver. Carbon/CM11 default kernel is already snappy, but if you want more governor/IO scheduler/overclocking more than 1.3 GHz then try k2wl's evolution kernel.
It still doesn't have KSM (kernel samepage merging) which is supposed to lower the RAM usage, but I think all AOSP-based ROMs are already very low on RAM usage.

naufalhadyan said:
Nebula kernel is really unstable, I suggest you not flash it if you're planning to use it as a daily driver. Carbon/CM11 default kernel is already snappy, but if you want more governor/IO scheduler/overclocking more than 1.3 GHz then try k2wl's evolution kernel.
It still doesn't have KSM (kernel samepage merging) which is supposed to lower the RAM usage, but I think all AOSP-based ROMs are already very low on RAM usage.
Click to expand...
Click to collapse
Thnxx bro, I'll use the evolution kernel, but k2wl hasn't released the latest version yet

Ateekujjawal said:
Thnxx bro, I'll use the evolution kernel, but k2wl hasn't released the latest version yet
Click to expand...
Click to collapse
Well holidays are already over, so I guess he's now busy with work/school/college. Devs are just regular guys...
The KSM feature isn't that much of a different anyway... What I'm hoping to see in next version is more frequency steps... as of now it is 312-600-800-1200-more but it should be better if like this: 100-200-312-400-500-600-700-800-900-1000-1100-1200... Hahaha maybe I'm asking a bit too much.

naufalhadyan said:
Well holidays are already over, so I guess he's now busy with work/school/college. Devs are just regular guys...
The KSM feature isn't that much of a different anyway... What I'm hoping to see in next version is more frequency steps... as of now it is 312-600-800-1200-more but it should be better if like this: 100-200-312-400-500-600-700-800-900-1000-1100-1200... Hahaha maybe I'm asking a bit too much.
Click to expand...
Click to collapse
Why would anyone want to drop as low as 100 Mhz if 312 is good and battery saving??

Ateekujjawal said:
Why would anyone want to drop as low as 100 Mhz if 312 is good and battery saving??
Click to expand...
Click to collapse
Yes I think it will... because there are some apps that sync in the background (such as Google apps) even when the device is asleep. With the current frequency steps it is either Deep Sleep (no CPU activity at all) or 312 MHz... and I think 312 MHz is still too high for only background app syncing while asleep... just my 2 cents. :silly:
But I imagine people who use conservative governor will have a hard time using 100 MHz as the minimum frequency... because the governor scales the freq so slow, the phone will lag a lot longer when waking up :silly:

Related

[Kernel] Lightspeed 0.1.1 - Faster than fast enough.

FOR 1.5 ROMS ONLY.
Thanks to teknologist, maxisma, toastcfh, and all those who contributed to cracking the CPU open for overclocking.
Looking at the CDMA forums, it seems they were a step ahead of us with their kernel speedups. With help from their work, and particularly, from toastcfh, I've been able to patch and compile a kernel based on teknologist 1.9 with added features and speed.
Added features and changes so far:
- BFS, brainfuck scheduler. Basically, helps the CPU respond faster.
- Overclock. Up to 768MHz is enabled, but defaults to a safer 595MHz. It should be compatible with SetCPU. Be sure to use the custom setting.
- Deadline I/O scheduler. It should make file read and write operations a tad faster. We'll see if it really does.
Git repo: http://github.com/Soaa-/-lightspeed/tree/master/kernel-hero/
It runs at 595MHz! How do I make it faster?
Download and install SetCPU. It's available for free on xda-developers, but you can support the author by buying a copy on the market. Launch SetCPU and pick the custom option.
My phone doesn't wake sometimes! Or, it wakes and the crashes!
Use SetCPU and set the CPU governor to 'performance'. Try lowering the clock speed if the problem persists.
Can I flash this on recovery?
The first overclocked kernel was available only as sources, and binaries had to be flashed manually. Lightspeed comes as a standard update.zip package to be flashed through recovery though.
Does Wi-fi work?
Yes.
Does compcache/ramzswap work?
No idea. I don't use it.
Is it noticeably faster?
Yes. This isn't a 5% increase in speed, where the difference is only seen through benchmarks. Most phones can handle 691MHz, which is a 30% increase in speed. The lucky ones who can clock up to 768MHz get a 45% increase. The net result is a more responsive phone.
Does the CPU frequency scale to usage?
It can, if you keep the ondemand CPU governor. However, there have been reports of instability using the ondemand governor, so the performance governor is recommended instead.
Do you accept donations?
Not yet, as my work so far has just been putting other people's work together. My priority now is to make our phones better, not to make money.
0.1.1
Integrated setcpu.txt into update.zip.
0.1
Initial release
Hi,
Looks great! Does it work in 2.1 roms?
Greetz
I want to know also
Does it work on 2.1 oms ??
Sorry, the kernel is made for 1.5 ROMs only. The only decent kernel for 2.1 is still the same leaked one from a while back, I think.
ok, gonna try it now on a 1.5 rom, with setcpu.
let you know if speed is there
i use a stock rom, and have the recovery menu so can i put the zip on the sd card and then flash it ?
I am also interested in a guide on how to install/flash this properly.
Just like knudsen81 said. Everything working perfect with CPU running on 595Mhz.
From what I see, it should be flashed like all other kernels so just like ROM or radio.
Does this kernel scales overclocking depending on CPU load? For ex. lowers when idle or screen turned off.
ZeppeMan said:
Just like knudsen81 said. Everything working perfect with CPU running on 595Mhz.
Click to expand...
Click to collapse
when setcpu launches, it doesnt have the "auto detect" option
when i click on custom, it shows 528 max and no more..
what am i doing wrong here?
flashed the update.zip like a normal rom/radio btw.
Good job! looking forward for testing. What's actually missing from making overclocking work with 2.1?
mixxy said:
when setcpu launches, it doesnt have the "auto detect" option
when i click on custom, it shows 528 max and no more..
what am i doing wrong here?
flashed the update.zip like a normal rom/radio btw.
Click to expand...
Click to collapse
I used Overclock widget to see the speed of the CPU. I only wanted to confirm if the 595Mhz was true
Also Linpack score went from 2.3 to 2.6.
mixxy said:
when setcpu launches, it doesnt have the "auto detect" option
when i click on custom, it shows 528 max and no more..
what am i doing wrong here?
flashed the update.zip like a normal rom/radio btw.
Click to expand...
Click to collapse
Create a file named setcpu.txt at the SD card (so it will be /sdcard/setcpu.txt)
and enter the following into that file:
Code:
96000,115200,134400,153600,172800,192000,211200,230400,249600,268800,288000,307200,326400,345600,364800,384000,403200,422400,441600,460800,480000,499200,518400,537600,556800,576000,595200,614400,633600,652800,672000,691200,710400,729600,748800,768000
This will allow setting frequencies from 96 to 768 MHz via SetCPU
Thanx 4 the great work.
2 questions.
first, what does "Git repository" means and when will u release it?
second, can i flash it over Modaco 3.2 through recovery mode?
sorry 4 my bad english.
k0rner said:
Create a file named setcpu.txt at the SD card (so it will be /sdcard/setcpu.txt)
and enter the following into that file:
Code:
96000,115200,134400,153600,172800,192000,211200,230400,249600,268800,288000,307200,326400,345600,364800,384000,403200,422400,441600,460800,480000,499200,518400,537600,556800,576000,595200,614400,633600,652800,672000,691200,710400,729600,748800,768000
This will allow setting frequencies from 96 to 768 MHz via SetCPU
Click to expand...
Click to collapse
thanks for the help, lets try this out and see what happens =P
worked like a charm, thanks a lot =)
Does the camera work?
Camera, WiFi should work because it's an (old) 1.5 Kernel.
Other overclocked kernel works faster than this one (and with this one i've freezed ..) ..
With the other linpack gives me 3.2 3.3
with this 2.6 at max ..
:/
Flemmard said:
Other overclocked kernel works faster than this one (and with this one i've freezed ..) ..
With the other linpack gives me 3.2 3.3
with this 2.6 at max ..
:/
Click to expand...
Click to collapse
Have you set the cpu to 768? because the other kernal runs at 710 by default where as this runs at 595 but can be clocked all the way up to 768.
Please read the forums before complaining it doesn't do something.

Antutu or No-Frills?

I'm kinda new to this frequencies thingy... can someone enlighten me about this? currently trying 2 different cpu control, antutu and no-frills? which is better? and also what are the basics that i need to know before doing anything? like min freq. max freq? also the governor? and sometimes i can see on other threads about voltage? what's that for? sorry for my questions, tried to search the forum but did not find an exact explanation...
You need firs a kernel that suports UV (like fauxs kernel and francos new r10 kernel) ... faux recomands (and as far as i know its the only app that works properly with his kernel) THIS, and franco recomand HIS app
no frills give it a miss.. frequencies do not stick. for faux use system tuner and for franco use his app. hell i am pretty sure you can use franco's app with faux one as well
Thanks for the info... Will check those... Im using sweep2wake franco from Renovate rom? Is it usable? And also. If i will set my max frequency to a lower number will it give me morw battery life in exchange of performance?
Sent from my HTC One X
mikey0105 said:
Thanks for the info... Will check those... Im using sweep2wake franco from Renovate rom? Is it usable? And also. If i will set my max frequency to a lower number will it give me morw battery life in exchange of performance?
Sent from my HTC One X
Click to expand...
Click to collapse
if you are using s2w franco kernel you are not going to get any help from franco as he did not compile that kernel..you are better off downloading and flashing his latest release r10
so if you are going to flash r10 then use franco's app and you should be good to go..let me know how you get on cause i am to busy right now to try stuff
mikey0105 said:
Thanks for the info... Will check those... Im using sweep2wake franco from Renovate rom? Is it usable? And also. If i will set my max frequency to a lower number will it give me morw battery life in exchange of performance?
Sent from my HTC One X
Click to expand...
Click to collapse
I am not sure that changing the frequencies will give you any battery improvements ... for that use undervolting ... undervolt your device for -100 (that is stable for everyone) or -125 (just stable for some guys)
muamers said:
I am not sure that changing the frequencies will give you any battery improvements ... for that use undervolting ... undervolt your device for -100 (that is stable for everyone) or -125 (just stable for some guys)
Click to expand...
Click to collapse
That undervolting... Does it give us battery life?
Goku80 said:
if you are using s2w franco kernel you are not going to get any help from franco as he did not compile that kernel..you are better off downloading and flashing his latest release r10
so if you are going to flash r10 then use franco's app and you should be good to go..let me know how you get on cause i am to busy right now to try stuff
Click to expand...
Click to collapse
Will download it a bit later and will give you a feedback
Sent from my HTC One X

Share, what rom and kernel are you using? Why?

I am a fairly new xda user, but not too new about flashing and using tweaks.
I created Thread to share what I use and why and might help others as well.
Beforehand, My priority in a rom and kernel is smoothness and battery life. I'm a light gamer(kairosoft lol)
Rom: CM9RC2 Pristine http://forum.xda-developers.com/showthread.php?t=1576874
Kernel: Forfivo V3 (SmartAssV2, SIO, 192/368 - 1024/1209)http://forum.xda-developers.com/showthread.php?t=1855557
Tweaks and mods: Seeder, Geeky Engine, Disable CPU Rendering.
http://forum.xda-developers.com/showthread.php?t=1987032
http://forum.xda-developers.com/showthread.php?t=1932047
The battery life is great. But still experimenting around. Its like 4-5% in 2 hours with internet connection(not wifi).
Smoothness is awesome.
Please share your device settings too! Cheers! :victory:
ROM: CM10 ALPHA 3:thumbup:
KERNEL: Default kernel [245mhz~1024mhz][OnDemand][Deadline]
TWEAKS:
--->Pimp My ROM[APP Version]
--->Disabled CPU Rendering
--->Disabled Surface Dithering
--->KSM
--->Seeders [.zip]
WHY?: Try it yourself and you will know WHY:thumbup:
*[Smooth]|[Powerful]|[WONDERFUL]*
Hello there, we meet again. Haha! I was roaming around and I've finally sticked with CM9RC2, since it's already in its release state and much more stable compared to CM!0. The function works and everything seems to be running smoothly- YES IT FINALLY WORKS after I went pristine. Hahaa. I'm quite happy with my phone right now. WAYYY faster and much more reliable.
ROM : Indroid REMICS v6
kernel : my own kernel with lulzactive 245-1024MHz
tweak : disable cpu render
why ?
i believe CM has been tweaked by arco so i don't need to tweak some more
cycloneblast said:
ROM: CM10 ALPHA 3:thumbup:
KERNEL: Default kernel [245mhz~1024mhz][OnDemand][Deadline]
TWEAKS:
--->Pimp My ROM[APP Version]
--->Disabled CPU Rendering
--->Disabled Surface Dithering
--->KSM
--->Seeders [.zip]
WHY?: Try it yourself and you will know WHY:thumbup:
*[Smooth]|[Powerful]|[WONDERFUL]*
Click to expand...
Click to collapse
May be a dumb thing to ask, but PIMP my ROM is just an interface changer right?
meeshvl said:
Hello there, we meet again. Haha! I was roaming around and I've finally sticked with CM9RC2, since it's already in its release state and much more stable compared to CM!0. The function works and everything seems to be running smoothly- YES IT FINALLY WORKS after I went pristine. Hahaa. I'm quite happy with my phone right now. WAYYY faster and much more reliable.
Click to expand...
Click to collapse
Congratulations! At certain times going Pristine is important.
hadidjapri said:
ROM : Indroid REMICS v6
kernel : my own kernel with lulzactive 245-1024MHz
tweak : disable cpu render
why ?
i believe CM has been tweaked by arco so i don't need to tweak some more
Click to expand...
Click to collapse
hadi! I was wondering, I tried your kernel once... twice... Wasn't sure if there was too much tweaks in my phone or whatever the problem might be, when I used 1.2, my phone goes into sleep state when I locked device, and when I wake it, it took quite a few seconds for the device screen to show up... Actually I'm a mass kernel flasher so I'd really wanna try your kernel too. Is your lulzactive 245-1024MHz settings battery friendly?
KiD3991 said:
May be a dumb thing to ask, but PIMP my ROM is just an interface changer right?
Congratulations! At certain times going Pristine is important.
hadi! I was wondering, I tried your kernel once... twice... Wasn't sure if there was too much tweaks in my phone or whatever the problem might be, when I used 1.2, my phone goes into sleep state when I locked device, and when I wake it, it took quite a few seconds for the device screen to show up... Actually I'm a mass kernel flasher so I'd really wanna try your kernel too. Is your lulzactive 245-1024MHz settings battery friendly?
Click to expand...
Click to collapse
hmm in phone it took 1-2 secs from deep sleep. not sure if this is because of my tweak or your tweak o.o
for me 1ghz speed is more than enough for my daily use, it saves battery a lot if you compare to 1.4ghz clock
Sent from my GT-I8150
ROM: CM9 Beta 4
Kernel: Hadi's Bigmem kernel (SAv2, SIO, 369-1024)
Tweaks: Disable cpu rendering, Seeders
Sent from my GT-I8150 using xda premium
hadidjapri said:
hmm in phone it took 1-2 secs from deep sleep. not sure if this is because of my tweak or your tweak o.o
for me 1ghz speed is more than enough for my daily use, it saves battery a lot if you compare to 1.4ghz clock
Sent from my GT-I8150
Click to expand...
Click to collapse
I know. :victory: I do that too. And btw, I used the version of BigMem 397mb you posted at the end of thread, I used that one and my phone did not suffer deep sleep. Before that, I used stock voltage normal, it took... more than 20 seconds.
iBlueee said:
ROM: CM9 Beta 4
Kernel: Hadi's Bigmem kernel (SAv2, SIO, 369-1024)
Tweaks: Disable cpu rendering, Seeders
Sent from my GT-I8150 using xda premium
Click to expand...
Click to collapse
How's the battery life?
KiD3991 said:
May be a dumb thing to ask, but PIMP my ROM is just an interface changer right?
Click to expand...
Click to collapse
ERM... Actually, no. PMR has some very very nice tweaks and mods that just reduces lag.[Not significantly but quite nice]
*[Smooth]|[Powerful]|[WONDERFUL]*
ROM: SlimBean 3.1.0 by camcory
Kernel: forfivo's v2 (smartassv2 - sio - 245MHz/1401MHz)
Tweaks/Mods: JellyBOOM V2, Seeders APK, Disable CPU Rendering, Disable Surface Dithering
For the ROM, I prefer SlimBean because of its size, with JellyBOOM, Seeders and forfivo's maybe it only takes 80-90 MB's compared to any other ROM. So for a stable, slow connection (around 20-30kB/s) it's fairly fast enough to download.
About the kernel and the tweaks/mods: try it yourself.
cycloneblast said:
ERM... Actually, no. PMR has some very very nice tweaks and mods that just reduces lag.[Not significantly but quite nice]
*[Smooth]|[Powerful]|[WONDERFUL]*
Click to expand...
Click to collapse
Oh, my bad. I checked, and its great! Looks promising. Might test it later after I learn some basic kernel building technique.
Kreaz said:
ROM: SlimBean 3.1.0 by camcory
Kernel: forfivo's v2 (smartassv2 - sio - 245MHz/1401MHz)
Tweaks/Mods: JellyBOOM V2, Seeders APK, Disable CPU Rendering, Disable Surface Dithering
For the ROM, I prefer SlimBean because of its size, with JellyBOOM, Seeders and forfivo's maybe it only takes 80-90 MB's compared to any other ROM. So for a stable, slow connection (around 20-30kB/s) it's fairly fast enough to download.
About the kernel and the tweaks/mods: try it yourself.
Click to expand...
Click to collapse
I used SlimBean once, the fluidity is actually better than Arco's CM10 by default. But I'm not sure if its my device or any other reasons, it consumes battery quite quickly when I underclock it. Nothing much to be said about forfivo's kernel. Been loving it since ICS v1.
Cm9 rc2 with hadi's bigmem kernel
Its as smooth as hell
Sent from my GT-I8150 using xda premium
Kreaz said:
ROM: SlimBean 3.1.0 by camcory
Kernel: forfivo's v2 (smartassv2 - sio - 245MHz/1401MHz)
Tweaks/Mods: JellyBOOM V2, Seeders APK, Disable CPU Rendering, Disable Surface Dithering
For the ROM, I prefer SlimBean because of its size, with JellyBOOM, Seeders and forfivo's maybe it only takes 80-90 MB's compared to any other ROM. So for a stable, slow connection (around 20-30kB/s) it's fairly fast enough to download.
About the kernel and the tweaks/mods: try it yourself.
Click to expand...
Click to collapse
Hey bro, I wanna know if JellyBoom is good or not. I prefer more battery over performance. If its good for battery and performance than its great I'm currently using CM10A3
*[Smooth]|[Powerful]|[WONDERFUL]*
cycloneblast said:
Hey bro, I wanna know if JellyBoom is good or not. I prefer more battery over performance. If its good for battery and performance than its great I'm currently using CM10A3
*[Smooth]|[Powerful]|[WONDERFUL]*
Click to expand...
Click to collapse
Actually, it has a really good battery and performance, so it is like balanced, good performance but with a great battery. I have screen-shot of my battery stats, will add it in this post later.
--EDIT--
Added screenshot as an attachment.
Kreaz said:
Actually, it has a really good battery and performance, so it is like balanced, good performance but with a great battery. I have screen-shot of my battery stats, will add it in this post later.
--EDIT--
Added screenshot as an attachment.
Click to expand...
Click to collapse
Thanks man. Saw the attachment of your battery. Why is your phone still awake when the screen is off ? Is there something wrong with your deep sleep on your phone? CMIIW
*[Smooth]|[Powerful]|[WONDERFUL]*
cycloneblast said:
Thanks man. Saw the attachment of your battery. Why is your phone still awake when the screen is off ? Is there something wrong with your deep sleep on your phone? CMIIW
*[Smooth]|[Powerful]|[WONDERFUL]*
Click to expand...
Click to collapse
There's nothing wrong actually with the Deep Sleep but BetterBatteryStats, I don't understand how to read the awake stats. I want to upload the stock battery stats screenshot but it's corrupt
Kreaz said:
There's nothing wrong actually with the Deep Sleep but BetterBatteryStats, I don't understand how to read the awake stats. I want to upload the stock battery stats screenshot but it's corrupt
Click to expand...
Click to collapse
Haha. Come to think of it, I myself also don't know how to read the awake stats. I also have the same problem as you but my deep sleep has no problems, too.
*[Smooth]|[Powerful]|[WONDERFUL]*
Hey guys. I tried the MIUI rom once. But its quite laggy when i installed many apps. Does anyone know any kernel or tweaks that is suitable with the rom for a better performance?
Thanks
Rom : cm9 rc2
Kernel : castagnaIT
Tweaks : too many
Reason : no specific reason though. Just trying out this and that
AzizWahid said:
Hey guys. I tried the MIUI rom once. But its quite laggy when i installed many apps. Does anyone know any kernel or tweaks that is suitable with the rom for a better performance?
Thanks
Rom : cm9 rc2
Kernel : castagnaIT
Tweaks : too many
Reason : no specific reason though. Just trying out this and that
Click to expand...
Click to collapse
Certain Tweaks when used together tends to clash and gives negative effect.
And if those apps you installed will run on background it tends to get laggy.
I use only Seeders and Disable CPU rendering.
I use forfivo's kernel because hadi's version have problem running on my device.
Until hadi fix the bigmem bug on external sd. I'd stick to forfivo.
KiD3991 said:
Certain Tweaks when used together tends to clash and gives negative effect.
And if those apps you installed will run on background it tends to get laggy.
I use only Seeders and Disable CPU rendering.
I use forfivo's kernel because hadi's version have problem running on my device.
Until hadi fix the bigmem bug on external sd. I'd stick to forfivo.
Click to expand...
Click to collapse
BTW, Seeder had just received a fine-tuning by yours truly
I'm amazed myself at the amount of improvement.
-- Sent from a GT-I8150 running ICS perfectly well. F'U, Sams#!t --

[Kernel] [CM9 - RC2 & RC3] honeyx 7up 2.6.35 kernel [for better battery life]

Due to some requests via PM´s I decided to make my kernel finally public, but remember:
This kernel is a personal kernel for my private use, so it´s only containing the tweaks I´m also really using
It´s the older 2.6.35 kernel basing on latest 2.6.35 sources from Arco, so only use it with Arcos CM9 RC2 or RC3 or a custom ROM with 2.6.35 kernel
This kernel is not filled with a lot of governors and schedulers, but only the ones I´m also personally using.
I have made this kernel because non of the custom kernels worked stable for me in the past, even at stock voltages. With this kernel I´m able to run at extreme Undervolting rock solid.
So this kernel was created with stability and battery life in mind. Each modification was tested separately, so everytime I added a tweak or a new feature, I tested the new kernel for a couple of days before adding the next one.
So why I decided to tweak this older kernel rather than going with 3.x kernel?
- Because this kernel is giving me a much better battery life than the 3.x kernel, is running rock solid and also because I don´t really need the new features added into 3.x kernel.
So what it has included:
- UV and OC options
- lowered WiFi voltage
- lowered lcd voltage
- slightly lowered standby / deepsleep voltage
- Battery life extender
- Fixed 100% battery notification after charger unplug
- 377MB RAM
- NO-OP scheduler as default scheduler
- Lulzactive governor as default governor
- tweaked Lulzactive for battery life and smoothness
- added 518, 633 and 902 MHz (new)
- screen off frequency set to 518 MHz max.(new)
- some more voltage tweaks
- no other compilation tweaks just to make the list longer
With this kernel and a new battery my SGW can last up to 7 days in standby. This is without WiFi and Mobile Data. With the stock kernel I got 3-5 days. It´s also working absolutely stable and smooth for me without any issues.
So if you run into some issues that are/were also discussed i the CM9 Bug report thread, don´t blame me for them.
other suggestions:
- enable KSM
- enable 16bit Dithering
- disable CPU rendering
- greenify your apps
If you follow these suggestions, your ROM should run absolutely smooth without the need for other tweaks.
To use Battery Life eXtender:
Use RootExplorer and go to: '/sys/class/misc/batterylifeextender'. Change the value in 'charging_limit' for example to 90 (default 100). This will set a limit for the capacity to which the battery will be charged. So in this example the battery will be charged to 90%.
----------------------------------------------------
After flashing the kernel whipe your cache and dalvik cache and fix permissions.
Just as a note. Should you encounter the white screen bug in some apps, this is because you whiped the cache in CWM Recovery after flashing the kernel. To fix this go into settings -> apps and delete data and cache of those specific apps.
Credits are going to:
- Arco (for his great work and sources)
- educk (for helping me doing the first steps)
- Christopher83 (for his great commits)
- ivendor (for his tweaks)
- Ezekeel (for Battery Life eXtender)
----------- 18.08.2013 -----------
- added frequencies
- incrased RAM
- lowered screen off frequency in Lulzactive
- some voltage finetunning
CM_9-2.6.35-7up-kernel.zip
----------- first release -----------
Download.
XDA:DevDB Information
[Kernel] [CM9 - RC2 & RC3] honeyx 7up 2.6.35 kernel [for better battery life], a Kernel for the Samsung Galaxy W I8150
Contributors
honeyx, http://forum.xda-developers.com/member.php?u=4410351
Kernel Special Features:
Version Information
Status: No Longer Updated
Created 2013-09-24
Last Updated 2013-09-24
First, thanks :good:
Edit: can i have your permission to use this kernel on my ROM?
ipromeh said:
First, thanks :good:
Edit: can i have your permission to use this kernel on my ROM?
Click to expand...
Click to collapse
Sure No problem mate.
honeyx said:
Sure No problem mate.
Click to expand...
Click to collapse
nicely done
I have tested this before with rc2 and I have to say battery life was very significantly longer compared to hurtsky 2.5 + QAsR v2.3. However, the white screen issue persisted in 2 of the apps I used the most, namely boat browser and Gmail so I have opted out again. But if you guys don't care about white screen, do give this kernel a try
Yeah, kernel 2.6 is always better battery life... i recomended it
- screen off frequency set to 768 MHz
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What mean of that ?
is we get trun off the screen it auto lock on 768Mhz ? it's not deepsleep any way CMIIW
hepi_hape said:
Yeah, kernel 2.6 is always better battery life... i recomended it
What mean of that ?
is we get trun off the screen it auto lock on 768Mhz ? it's not deepsleep any way CMIIW
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Click to collapse
This is the max frequency the clock might rise to if the screen is off but for example an app or a service awakes the phone from deepsleep. So it will not drain so much the battery if the phone gets awake for some reason and if you undervolt your cpu, you can reduce the consumption for such a case even more.
This is preset in the Lulzactive governor, which Christopher83 fixed to make this working, so it´s only related to this governor, which is also my default governor.
So when in screenoff the phone only maximum can use CPU clock at 768Mhz
Yeah i get it. .thx for explain it
I think arco might be able to help you fix the white screen. Long back skull kernel experienced the same and acro helped him to fix it.
coolbuy said:
I think arco might be able to help you fix the white screen. Long back skull kernel experienced the same and acro helped him to fix it.
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Uhm, well I´m not sure this is exactly the same because Keff (Woohooo..) is modding the 3.x kernel for CM10. But thanks for the suggestion. I will aks Keff first to not to bother Arco in the first place. It will be for sure interesting what caused it for him.
Just to clarify some things about the white screen bug. The one I described in my first post is not the real white screen bug, but only what happens to some apps after whiping the cache in CWM Recovery. This can easily be fixed like described above and will not bother you anymore.
The real white screen bug came all of the sudden (without whiping anything before). So for example you opened facebook, everything was fine, but a few minutes later by relaunching facebook you got a white screen. The procedure to get rid of this was the same as I already mentioned but with the difference it happened again after a while.
So well I have had this issue with facebook too in the past, but it´s gone and now even not happening after whiping the cache in CWM Recovery. It´s not gone because I updated the rom (still using RC2), but because facebook updated their app.
Edit:
I already found what you was talking about. It´s called the white noise issue where you get a white screen by turning the screen on, so it´s not the same.
And how is games performance ?
Sent from my GT-I8150 using xda premium
mps42 said:
And how is games performance ?
Sent from my GT-I8150 using xda premium
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Mind you: This is battery saving rom. It is meant to have low game performance. It MUST have a lower gaming performance than those v3.0 kernels. If you want gaming, this is not for you.
Doplgangr said:
Mind you: This is battery saving rom. It is meant to have low game performance. It MUST have a lower gaming performance than those v3.0 kernels. If you want gaming, this is not for you.
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Yes, this is a battery saving kernel, but why should it have low gaming performance? Just because it´s optimized for low consumption in standby and because you can undervolt it? It´s like you were comparing an older Pentium4 against an Intel Atom CPU and saying the Atom must be faster because its newer. Or by comparing a Atom against a 286 CPU and saying the 286 will be faster than the Atom because the Atom is more battery friendly.
Sure, it´s not optimized to get the highest scores in benchmarks, but the games I´m playing once in a while are running totally smooth.
The newer releases of CM9 might be of course faster in games, but not just because of the 3.x kernel, but also because Arcos ocessionaly is updating the GPU drivers.
honeyx said:
Yes, this is a battery saving kernel, but why should it have low gaming performance? Just because it´s optimized for low consumption in standby and because you can undervolt it? It´s like you were comparing an older Pentium4 against an Intel Atom CPU and saying the Atom must be faster because its newer. Or by comparing a Atom against a 286 CPU and saying the 286 will be faster than the Atom because the Atom is more battery friendly.
Sure, it´s not optimized to get the highest scores in benchmarks, but the games I´m playing once in a while are running totally smooth.
The newer releases of CM9 might be of course faster in games, but not just because of the 3.x kernel, but also because Arcos ocessionaly is updating the GPU drivers.
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Click to collapse
Thank you for correcting my ignorance. :laugh: Maybe I'll give the kernel a try and tell more about that
Honeyx, I hope you continue to develop and share this kernel in the future because I decided to start everything over from scratch because of your work here. I love this kernel. I get so much better battery life now. If you would ever consider adding Lionheart in the future, I would be very grateful. Is there any way to add Row or does it require kernel 3? Thanks again!
Sent from my GT-I8150 using xda app-developers app
honeyx said:
Yes, this is a battery saving kernel, but why should it have low gaming performance? Just because it´s optimized for low consumption in standby and because you can undervolt it? It´s like you were comparing an older Pentium4 against an Intel Atom CPU and saying the Atom must be faster because its newer. Or by comparing a Atom against a 286 CPU and saying the 286 will be faster than the Atom because the Atom is more battery friendly.
Sure, it´s not optimized to get the highest scores in benchmarks, but the games I´m playing once in a while are running totally smooth.
The newer releases of CM9 might be of course faster in games, but not just because of the 3.x kernel, but also because Arcos ocessionaly is updating the GPU drivers.
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Click to collapse
Not for hard gaming.....thats sure....if you want battery play with puzzlebubbles
Inviato dal mio GT-I8150 con Tapatalk 2
tebor8 said:
Honeyx, I hope you continue to develop and share this kernel in the future because I decided to start everything over from scratch because of your work here. I love this kernel. I get so much better battery life now. If you would ever consider adding Lionheart in the future, I would be very grateful. Is there any way to add Row or does it require kernel 3? Thanks again!
Sent from my GT-I8150 using xda app-developers app
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Click to collapse
I may add some tweaks in the future, but this may take a while till I have some spare time to test them. About adding other governors...well I tested a lot of them but finally decided to use Lulzactive because it was the most battery friendly governor in the one hand and because there is also the Lulzactive app you can use to tweak it to your needs. So for example tweak it that way it behaves like for example Lionheart. I also tested the ROW scheduler but it wasn´t as stable as I presupposed to be. So the best compromise between stability and performance was to use the noop scheduler. It´s nearly as fast as the row but way more stable.
djdu90 said:
Not for hard gaming.....thats sure....if you want battery play with puzzlebubbles
Inviato dal mio GT-I8150 con Tapatalk 2
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LoL. I´m quite sure with extreme undervolting you can still save some battery juice even while playing action games on this device. Beside this it´s not the CPU or GPU that consumes most, but the display and its backlight LED´s.
it is for battery saving but for me its not good to play with games cuz playing for like 40-60 minutes consume 60% battery ? lol
thats quite alot and might burnt up my battery life.
Dwama said:
it is for battery saving but for me its not good to play with games cuz playing for like 40-60 minutes consume 60% battery ? lol
thats quite alot and might burnt up my battery life.
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So did you thought it will consume just as much as being in deepsleep????????? The kernel is tweaked to consume less in deepsleep and in daily use but not to consume less in games. Beside this it´s not the CPU nor the GPU that consumes most, but the backlight LEDs in your screen. So even by undervolting and underclocking it will still drain a lot if playing games.
There is no and will not be a magical Kernel that is using witchcraft to reduce the consumption of the LEDs, exept someone compiles you a kernel which turns out the LEDs completely, if you can with a complete dark screen.
honeyx said:
So did you thought it will consume just as much as being in deepsleep????????? The kernel is tweaked to consume less in deepsleep and in daily use but not to consume less in games. Beside this it´s not the CPU nor the GPU that consumes most, but the backlight LEDs in your screen. So even by undervolting and underclocking it will still drain a lot if playing games.
There is no and will not be a magical Kernel that is using witchcraft to reduce the consumption of the LEDs, exept someone compiles you a kernel which turns out the LEDs completely, if you can with a complete dark screen.
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Im not expecting anything from ur kernel, im glad that u shared ur kernel taht could last longer than arco's stock kernel.
I was just giving up my comments about ur kernel that i have used for 2 months , Not complaining and whining lol.
I am sorry and thanks for sharing ur kernel , keep it up. :fingers-crossed:

[Q] GNex Reboots when running certain apps

I'm currently running PA 3.6 and the AK Diamond kernel. 99% of the time, everything works fine, however when I start running Puzzle & Dragons, the phone gets really hot and more often than not will reboot before I finish playing. I have also tried using the AK Kubo (stable) kernel, and it does the same. I'm kind of a noob so I don't tweak the kernel settings very much, and I don't really know how to go about fixing this. One thing to note is that on the stock PA 3.6 kernel the phone still gets really hot but it won't reboot. I'd like to keep using the AK kernel as it makes my phone run really smoothly but I would also like to try and fix this problem.
The sole common point to that whole story is Puzzle and Dragons.
a manta wrote this.
beekay201 said:
The sole common point to that whole story is Puzzle and Dragons.
a manta wrote this.
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Click to collapse
Are you saying that AK kernel and P&D just don't get along? Because although it gets hot, on PA 3.6 with its stock kernel it won't forcibly reboot my phone like it does with AK. I've found a temporary workaround which is to switch the governor to powersave while playing...but that doesn't really fix the issue...
AkutsuX said:
Are you saying that AK kernel and P&D just don't get along? Because although it gets hot, on PA 3.6 with its stock kernel it won't forcibly reboot my phone like it does with AK. I've found a temporary workaround which is to switch the governor to powersave while playing...but that doesn't really fix the issue...
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Click to collapse
No, it's just the kernel that doesn't "like" your cpu.
beekay201 said:
No, it's just the kernel that doesn't "like" your cpu.
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Click to collapse
Sorry I'm kind of a noob but...is my cpu not like other Nexuses? Why would it have a problem with mine in particular?
AkutsuX said:
Sorry I'm kind of a noob but...is my cpu not like other Nexuses? Why would it have a problem with mine in particular?
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lol
there's this thing called quality of the components used; the chinese can make the best and the worst.
every chip handles the tasks that are required of them yes, but that's why you see devices that can OC to 1.6, 1.7 even 1.8ghz stable, or UV like a boss, and others that can't handle even 1.6ghz oc or huge UVs.
for example, mine can UV like a boss, but not so good at OC'ing.
thermal throttling of the cpu might be more agressive with some kernels.

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