Database Users

[Q] Does new kernel include undervolting and conservative power?

Hi there, quick question...
Do the newest kernels also include undervolting and conservative power setting? (and overclocking, but I don't understand why people even want that)
With newest kernels, I mean the kernels from http://oe.netripper.com/files/htcleo_autobuild/
Or should I use the kernel attached in http://forum.xda-developers.com/showthread.php?t=746997#

All this is answered in android development. Check ur builds thread. It will telk u which kernwl is being used and what is enabled. Im using shrubcrafts build. The included kernel has overclocking undervolting inckuded.
Sent from my HTC HD2 using XDA App

ok maybe I wasn't clear (blame it on the dutch! ;-)
Of course I know which kernel I'm using at the moment, indeed it's mentioned in the thread of the build.
However, I can't find any info on the activated options in the newest kernel (for example the kernel of the 24th august).
As far as I understand, someone started adding/changing some lines in some file and recomplied the kernel to have other options activated. I'm not sure, and want to know if recent autobuilds do have those options by default.
Please correct me if I'm wrong!

Custom kernel?

Okay, I understand that the bootloader is locked and what not and that means no over clocking but I have downloaded a app (dx/d2 overclocking) from the market to allow overclocking and have seen it on the forums here on how to manually. Does this mean we have custom kernels running or just that we have achieved a bypass to overclock. One would think this means they have hacked the boot loader and we are now running custom kernals but im kinda a noob so some more info on the topic would be greatly appreciated. And also, what is cyaogen (sp?)..I see it everywhere and have yet to get it due to not having custom kernels but I still don't know what it is. Thanks
Sent from my DROID2 using XDA App

JonandRoid said:
Okay, I understand that the bootloader is locked and what not and that means no over clocking but I have downloaded a app (dx/d2 overclocking) from the market to allow overclocking and have seen it on the forums here on how to manually. Does this mean we have custom kernels running or just that we have achieved a bypass to overclock. One would think this means they have hacked the boot loader and we are now running custom kernals but im kinda a noob so some more info on the topic would be greatly appreciated. And also, what is cyaogen (sp?)..I see it everywhere and have yet to get it due to not having custom kernels but I still don't know what it is. Thanks
Sent from my DROID2 using XDA App
Click to expand...
Click to collapse
Currently the method of overclocking is done through scripts. Cyanogen is a developer and usually people refer to his ROMs that he creates as Cyanogen as well.

JonandRoid said:
Okay, I understand that the bootloader is locked and what not and that means no over clocking but I have downloaded a app (dx/d2 overclocking) from the market to allow overclocking and have seen it on the forums here on how to manually. Does this mean we have custom kernels running or just that we have achieved a bypass to overclock. One would think this means they have hacked the boot loader and we are now running custom kernals but im kinda a noob so some more info on the topic would be greatly appreciated. And also, what is cyaogen (sp?)..I see it everywhere and have yet to get it due to not having custom kernels but I still don't know what it is. Thanks
Sent from my DROID2 using XDA App
Click to expand...
Click to collapse
This is not a custom kernel. The word of some great minds is that a kernel has been developed and is still being worked upon but they have been able to get it working at least. There are still some bug issues with it such as the cell radio not working. Until they can find out things like that we wont have the custom kernel.

theecho said:
This is not a custom kernel. The word of some great minds is that a kernel has been developed and is still being worked upon but they have been able to get it working at least. There are still some bug issues with it such as the cell radio not working. Until they can find out things like that we wont have the custom kernel.
Click to expand...
Click to collapse
So there is a kernel currently booting besides the stock moto kernel? That is huge even if there are problems with assorted hardware not working. How is this the thread to hear that news lol.

zibrah3ed said:
So there is a kernel currently booting besides the stock moto kernel? That is huge even if there are problems with assorted hardware not working. How is this the thread to hear that news lol.
Click to expand...
Click to collapse
Its not official and I didnt say that lol.

My mistake. Things like cell radio not working aren't really a big deal if it doesn't boot though. Guess i'm reading too much into what you said.
Sent from my DROID2 using XDA App

Well that really is good news that they have a custom kernel kind of working because that means they are close. I know a good amount about all of this stuff and rooting and what not and try to check by the fourms about once a day so im not a complete noob but thanks for answering some of my questions.
Sent from my DROID2 using XDA App

[Dev] Creating custom Kernel

Hi,
I am a C++ and Java devs. I just got my first Android device, Google Nexus 7. I had an iPad before but I sold it to try Android . So here am I
I would like to know if there was any way to learn how to create custom kernel ? If there was any help anywhere? Documentation or whatever? I never coded anything for Android yet. My wish is to be able to create a Kernel that allows overclocking. I tried the Clemsyns Elite Kernel that allows the user to overclock to 1.8Ghz. My goal is to try to get even farther, try to reach 1.9 Ghz or 2Ghz.
Thanks you

Up please

So many good devs in here please

I'm not a dev but I've seen similar posts to this before. Try searching the forums (don't limit yourself to the nexus 7 forum) and I bet you will find some links to info on kernel development.
-Sent from my HTC One S.-

There are plenty generic guides availible.
My simple google search yielded this: http://forum.xda-developers.com/showthread.php?t=1039854

Thanks for all of your answer
I should be able to compile a kernel by now thanks
But I was more looking for help in modifying one, since it is a really huge code, il would take a long while to read all part of it and even thought I would like to read it, when you dont know a thing about it, it is pretty hard to fins where to start x)
Sent from my Nexus 7 using Tapatalk 2

[Q] Most Stable ROM

Short Story: I need a very Stable & Capable ICS or JB ROM
Long Story: I have yet to flash my first custom ROM on the Acer a500. I updated to the official ICS then rooted and installed a custom recovery. The problem is that there are so many bugs in the stock ROM that get quite annoying. i.e. the screen flickers from time to time in apps, and the tablet has to be restarted. To fix them, I'd have to do a factory reset, but if Im going to lose my data, might as well Flash a new ROM.
I need it to be able to run the top games like Nova 3 Gta 3 Modern Combat 3, Shadow-Gun etc. as well as be able to run Office Applications. I understand you guys can't guarantee that they will work, but please let me know which ROM you found capable of running most apps smoothly. I use this tablet for work and entertainment, thus stability is important.
Thanks. :laugh::good:

Look in my signature, there is the most stable JB ROM but it is stll in testing!
The best ICS ROM is here:
MOD EDIT: Link Removed. Providing direct links to roms containing non-GPL kernels are against XDA rules.
In that forum you will find also Civato`s ICS ROM, it is also to find here on xda
m.

Just some info;
Posting links to roms containing non-GPL kernels are prohibited as per XDA rules. This is something most people know about already.
XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site.
Cheers.
MD

bobiscool07 said:
Short Story: I need a very Stable & Capable ICS or JB ROM
Long Story: I have yet to flash my first custom ROM on the Acer a500. I updated to the official ICS then rooted and installed a custom recovery. The problem is that there are so many bugs in the stock ROM that get quite annoying. i.e. the screen flickers from time to time in apps, and the tablet has to be restarted. To fix them, I'd have to do a factory reset, but if Im going to lose my data, might as well Flash a new ROM.
I need it to be able to run the top games like Nova 3 Gta 3 Modern Combat 3, Shadow-Gun etc. as well as be able to run Office Applications. I understand you guys can't guarantee that they will work, but please let me know which ROM you found capable of running most apps smoothly. I use this tablet for work and entertainment, thus stability is important.
Thanks. :laugh::good:
Click to expand...
Click to collapse
First off, I would suggest installing the Unlocked V8 bootloader along with the most recent Recovery. This makes it easier for a lot of things.
Civato's ICS roms seem to be the most popular as far as ICS for the A500.
Waydownsouth's CM10 also seems to be okay as well, but is still inwork as with most CM10 roms.
Both roms will use the Godwarrior OC/UV kernel, so if you need more framerate, it's there.
Also, you can flash one of the stock rooted/deodexed versions and OC/UV kernel.
EZTerry also has an OC/UV kernel as well which runs good.
It all boils down to how the rom runs on "your" tablet. Contrary to popular belief, not all A500's are created equal. Some have different revision hardware.
My advice is to try a couple. See how they run.
MD

@moscow desire,
" XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site. "
So why do you think, I posted the link from the authors side??
Definitely not to make you angry!
Diversity can only exist if you don't use only one information source!! Diversity and variety are necessery for free decelopment... .
m.

meduza2 said:
@moscow desire,
" XDA has stable roms. However, if one chooses to install a non-hosted rom, one can't expect much support in the forums. Support would be better served at the authors site. "
So why do you think, I posted the link from the authors side??
Definitely not to make you angry!
Diversity can only exist if you don't use only one information source!! Diversity and variety are necessery for free decelopment... .
m.
Click to expand...
Click to collapse
It's OK Mate. Sent you a PM.
The problem with doing support with a "non-hosted" rom, is that, due to the fact Thor uses non-GPL kernels, And some other encrypted things, a lot of people are unfamiliar with what issue it's been known to cause. Whereas most users here, use what XDA hosts, or they compile from GPL and Apache sources. Especially when it comes to kernels.
Which is why, if you run Thors rom, you will get better support at Thors site. Plain and simple. It's not that some people here will not try and help. I've done it myself, and quite successful depending on the issue. It's just that his roms are a bit different.
MD

2ndboot builds and stock kernel.

Hello everyone, I would like to know if the new 2ndboot builds can be used with the stock kernel by just selecting "2ndinit" from the bootmenu. why would I want something like this? because there are new fixes in those builds but I don't want to use a custom kernel yet, I would feel safer when it's more tested.
(Btw I own a Defy+)
PS: Oh, if this was mentioned in somewhere else in the forum, I apologize for this post, but I did the search and didn't find anything that concretely answers this question.
Thanks .

Peri. said:
Hello everyone, I would like to know if the new 2ndboot builds can be used with the stock kernel by just selecting "2ndinit" from the bootmenu. why would I want something like this? because there are new fixes in those builds but I don't want to use a custom kernel yet, I would feel safer when it's more tested.
(Btw I own a Defy+)
PS: Oh, if this was mentioned in somewhere else in the forum, I apologize for this post, but I did the search and didn't find anything that concretely answers this question.
Thanks .
Click to expand...
Click to collapse
No you can't use together.
You use 2nd init or you use 2nd boot.
Sent from my MB526 using xda app-developers app

The only detrimental effect with new builds is battery drain. It can be solved by not using zram,swap and ksm ...which in a way gives u almost the same effect of the ****ty stock kernel.
Sent from my MB526 using xda app-developers app

Please ask all questions in the Q&A section. Thread moved there.