Develop Bugs

Undervolt Kernal?? Would this work for the EVO?

I currently have a hero and my gf just got the EVO and the battery life is pretty rough on it of course like we all know but i just flashed an under-volt kernal and it seems to work very well, is this possible yet for the EVO? Here are the links below about the topic
Under-volt Theory
http://forum.xda-developers.com/showthread.php?t=697286
Kernal for HTC Hero w/undervolt
http://forum.xda-developers.com/showthread.php?t=722073

AFAIK, most of the kernals we already have available undervolt the CPU.

okay, sorry im a noob to the EVO, as of yet i dont own one, i have a very good undestanding how ever thing works with my hero. So like the latest Fresh Rom for the EVO, has undervolt?

BAttitude7689 said:
okay, sorry im a noob to the EVO, as of yet i dont own one, i have a very good undestanding how ever thing works with my hero. So like the latest Fresh Rom for the EVO, has undervolt?
Click to expand...
Click to collapse
Fresh Rom is a ROM, not a kernel. The kernel that comes with Fresh Rom by default is the stock HTC kernel which has no undervolting. You have to flash an alternate kernel after you flash the ROM which will allow undervolting.
There are a few kernels from which to choose from available here.

BAttitude7689 said:
I currently have a hero and my gf just got the EVO and the battery life is pretty rough on it of course like we all know but i just flashed an under-volt kernal and it seems to work very well, is this possible yet for the EVO? Here are the links below about the topic
Under-volt Theory
http://forum.xda-developers.com/showthread.php?t=697286
Kernal for HTC Hero w/undervolt
http://forum.xda-developers.com/showthread.php?t=722073
Click to expand...
Click to collapse
There are several threads in her in the dev section here with various kernels for the hero. I use Damage Control 3.2.3 ROM and therefore use a kernel from the developers there. However there is another thread (not ROM related per-se) that goes deeper into the different kernels that are available and being worked on. If you prefer another ROM search those threads... Since the release of the complete source code recently several dev's are tweaking the kernels to integrate with their ROM's.
Seek and yee shall find... (If you go to the DamageControl link, Look for info on post #2. You will have to scroll a bit because it's a beast as is the size of the thread.

I think Baked Snack ROM does the most undervolting. He said he has undervolted it so low with stability.
That ROM does wonders to your battery... let me just say that.

[Q] Which root has least Sprint crap, most stable WiMAX, and best battery use??

So far I have tried unrEVOked and AVA-FROYO V10.
unrEVOked is little bit behind on latest kernels and is stuffed with Sprint garbage. It did have great battery life with 4G and WiFi enabled (12 hours for me).
AVA-FROYO V10 was OK, very little Sprint crap... but battery life on it was extremely unpredictable (from 4 hours to 12 with cell standby chewing up most).
Unfortunately the latest radio update messed it up and now I need to reflash everything, so might as well look at other roots.

Myn
Sent from my PC36100 using Tapatalk

Do you mean ROM?

WRONG SECTION !
unrEVOked and kernels ? LOL

I am sure they will move it to the right section.
Yeah, you are right, I did mean ROM. Had a massive brain cramp, so I called it a root
Re. unrEVOked, hey, I had to start somewhere

Cyanogen..... soon
Sent from my PC36100 using XDA App

I didn't have the best luck with AVA V10, but V9 has incredible battery life. Here is a link:
http://www.4shared.com/dir/kqCqyssL/Ava_Roms.html

Whichever ROM you download, you can open the zip (don't extract), go to system>apps and delete any apks you don't want it to install when you flash it. Of course, make sure you know what apks you are removing first so you don't get problems later and have to end up re-downloading/re-flashing your phone.

unrEVOked is not a ROM, nor a kernel, and has nothing to do with battery life. Other than the superuser app showing up, it should not affect anything at all. It's a rooting process, specifically intended to unlock your NAND (S-Off, visible in the bootloader).
Popular ROM options are Fresh, MIUI, CyanogenMod. Fresh has fully working WiMax. CM is close. Don't know about MIUI, but it's probably not packing working 4G. None of them have any of the Sprint apps by default.
You can bake your own Fresh ROM with whatever you want included. CM doesn't even include the Google Apps by default (you can add them easily), so it's even trimmer.
Once you are fully rooted, and familiar with the nandroid backup process (and Titanium Backup), you can switch between ROMs fairly easily and make your own decisions.
To get started, root and then flash Fresh. Actually, wait a few days (but don't accept the current OTA if you haven't already), and install Fresh once it's been updated. Because it's based on stock with Sense, you can probably flash without clearing your data (DO clear your caches) and get off to a quick start.

Yeah, I am still learning this rooting process. I have very little time available for playing around a bit and no way in hell am I going to use time of my devs in the office. Hence me doing it the lazy way - asking you which ROM is the best for my needs and then flashing and forgetting it.
BTW, thanks for the advice so far. Saving me a lot of time!

MYNs is popular or if you want a stock one, I suggest looking at the ReEngineered Stock ROM that aamikam made. He spent alot of time fixing up the apks so that they are smaller in size and speeds up the ROM.

i would just find a rom that you like and run with it. the rom itself shouldn't make THAT much difference. from what i have seen, its your kernel that really makes the difference in batter-life and performance. Most of the bloat-ware in the majority of these roms can be removed pretty easily.
Myn has some great stuff for ROMS. Ava V10 (if you have bad battery, try a different kernel)
Here are my 3 fav Kernels:
Hero's Laptop Kernel (all i have to say is WOW)
Net's 4.2 or 4.1
King's CFS

ROMs:
Sense: Calk's or Myn's or for a pure stock feel try ReEngineered 3.70.651.1.
AOSP: Cyanogen Mod (No Contest)
Kernels:
I always stick with Stock on all the ROMs I have tried.
Have fun flashing man.

Try Azael X its very fast very little no bloat and stable 4G plus battery life is great he will update to 3.70 soon he's working on it now Rick is very picky about letting his roms out with bugs so he tests and tests before release

groovyipo said:
Yeah, I am still learning this rooting process. I have very little time available for playing around a bit and no way in hell am I going to use time of my devs in the office. Hence me doing it the lazy way - asking you which ROM is the best for my needs and then flashing and forgetting it.
BTW, thanks for the advice so far. Saving me a lot of time!
Click to expand...
Click to collapse
Simply put;
Myn Warm (Sense)
CM (non Sense)

ROM: Azrael X, myn warm, baked snacks
kernel: ziggy dec5, baked laptop, net 4.2
Battery life:
hxxp://img202.imageshack.us/img202/2874/snap20101219181053.png
--
Using Azrael X latest and ziggy dec5
Sent from my PC36100 using XDA App

Where did you download your ziggy dec5 kernel?

groovyipo said:
Where did you download your ziggy dec5 kernel?
Click to expand...
Click to collapse
Ziggy471.com
Sent from my PC36100 using XDA App

Now I am just pondering what are the major advantages of switching out stock kernel on Azreal X v.2.1 to Ziggy?

[q] **whats the best rom out today?**

Hey android fam,
ima keep this short and simple.
1. I rooted my htc evo
2. I want to know whats the best rom out there (2.3 with everything working 4g or close to it etc)
3. After i download the rom i want, whats the next step to install it the right way? (i already downloaded "titanium backup" what else do i need?)
thanks

A good starting place,
Try Cyanogenmod, MIUI, Myns Warm, and MikFroyo

I would add Salvage-Mod 1.2.1 to the list mentioned above, specifically with the Tiamat 3.3.7 kernel and LauncherPro. It flies on my device and everything works.
posting & replying via the XDA Premium app.

thanamesjames said:
A good starting place,
Try Cyanogenmod, MIUI, Myns Warm, and MikFroyo
Click to expand...
Click to collapse
If your looking for AOSP try Cyangenmod, Ultimate Droid,
Sense My favorite so far is probably Mikfroyo.....Second Myns warm...third Fresh....
Just flash all of them and just mess around to find out what you might like. a good starting point is to download Rom manager but don't use that program to flash, just use it to download, then boot into recovery and flash manually. Good luck...
If your really wanting to play around you can try flashing different kernels which I am still trying to figure out a good sense kernel to use for mikfroyo. Good luck

Thanks everyone
Sent from my PC36100 using XDA Premium App

Personally, I have been running Deck's 2.3.3 GB AOSP ROM. It's fast, stable, and everything works, including 4G. I use Tiamat's 3.3.8 SBC kernel and get great battery life as well. You can find his thread at PPC Geeks. He said when he releases the final version, he'll post it here at XDA.

Deck's GB is def my fav GB ROM. Everything works. The final version (1.0) is releasing today at 6pm est. The main thread is at PPC geeks, but Deck said he would start an official thread here once 1.0 launched.

"Best" -- in this case -- is subjective.

jsantos248 said:
Hey android fam,
ima keep this short and simple.
1. I rooted my htc evo
2. I want to know whats the best rom out there (2.3 with everything working 4g or close to it etc)
3. After i download the rom i want, whats the next step to install it the right way? (i already downloaded "titanium backup" what else do i need?)
thanks
Click to expand...
Click to collapse
Congrats on rooting. Just remember that rooting isn't everything. It's just like getting an admin or superuser account on a Windows or Linux machine. It gives you the ability to modify system files that you normally can't do as the default user.
You need to make sure that your phone is NAND unlocked and you need to flash an alternate recovery. A recovery is kind of like a boot-disk built into your phone. You can boot into "recovery mode" and flash data to the phone. This is how you install a new ROM. The two big recoveries are Clockwork and AmonRa.
Basically you download a ROM in zip format, put it someplace on your SD card where you can find it, boot into recovery, do a backup (make an image you can restore from if things don't go well) and then format data, cache, dalvik, etc.
Once you have a clean slate, flash the ROM from the zip file on your SD card and wait for it to finish. Reboot and enjoy your new phone! It's like installing a fresh copy of the OS with various modifications.
There is a bit more to it that all that but that is the gist. Once you are familiar with the process it's easy. Before long, you'll be comfortable with reading about a new ROM, making a quick backup and flashing it to check it out. If it is good you keep it, if it sucks you restore your old backup. I go through phases where I like what I have and then the bug will bite me and I try like 2 or 3 ROMs in a week.

wmstwo002 said:
Personally, I have been running Deck's 2.3.3 GB AOSP ROM. It's fast, stable, and everything works, including 4G. I use Tiamat's 3.3.8 SBC kernel and get great battery life as well. You can find his thread at PPC Geeks. He said when he releases the final version, he'll post it here at XDA.
Click to expand...
Click to collapse
Just my 5 cents, but you should get better battery life on 3.3.7, as in 3.3.8, the minimum voltage was raised to help those that flashed the kernel and natively got reboots.

Ryjabo said:
"Best" -- in this case -- is subjective.
Click to expand...
Click to collapse
+10000000000000
FOR ME:
When I'm in an AOSP mood, it's CyanogenMod. It was the first one I tried and I'm too lazy to adjust to other AOSP roms LOL. I have tried other AOSP roms, but I like the features included in CM and the support he gives.
When I'm in a Sense mood, it's usually Mik roms (MikFroyo, MikZ, MikGinger, etc) because what he does to those roms is nothing short of amazing. Speed, stability, and everything just works. When Myn gets around to releasing his Gingerbread rom that's going to be my DD.

jsantos248 said:
Hey android fam,
ima keep this short and simple.
1. I rooted my htc evo
2. I want to know whats the best rom out there (2.3 with everything working 4g or close to it etc)
3. After i download the rom i want, whats the next step to install it the right way? (i already downloaded "titanium backup" what else do i need?)
thanks
Click to expand...
Click to collapse
Well if you are looking for 2.3.3 with everything working including 4g and GPS I would recommend CyanogenMod. You battery life might be kinda crappy even with the Tiamat 3.3.8 kernel as compare to a 2.2 rom.

Im a fan of Mikz and Kings is you like sense. They both do amazing work and their custumization is top notch.

I'm running Myn's Warm TwoPointTwo (Sense ROM) with the Netarchy 4.3.1 cfs-havs-nosbc kernel and Launcher Pro Plus.
Lightning fast underclocked at 499 mHz awake and 128 mHz with screen off (using SetCPU). Battery life is shocking too with the Seidio 3500 extended battery. Unplugged at 7AM and heavy usage all day (phone calls, texting, email, web surfing, Pandora, etc) it's still around 45-50% at 11PM
Always searching for a better battery kernel though, lol
Jack

Well im on Kings Unleashed R-5 to.the the best rom right now, but im about to try a CM7 cuz people be telling me about the speed and stuff
Sent from my PC36100 using XDA Premium App

Sorry, but people claiming everything is working on CM7 for htc evo obviously don't use their cameras. Still shots are not taken at full 8mp at proper aspect ratio. There is also no 720p recording.
Have a look at Elite Series III.It's super fast and has everything working. The theme it comes with is amazing. Proper flash instructions are on that thread and there is nothing else you need to fux with after flashing.
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What is a kernal

I am running the mik ROM 3.0 and I am not sure what a custom kernal is or how to flash a kernal is it the same as a rom?? How do I apply a kernal while using my ROM?? I have searched the forums and couldn't find an answer plz help me out thanx
Sent from my PC36100 using Tapatalk

reaper559 said:
I am running the mik ROM 3.0 and I am not sure what a custom kernal is or how to flash a kernal is it the same as a rom?? How do I apply a kernal while using my ROM?? I have searched the forums and couldn't find an answer plz help me out thanx
Sent from my PC36100 using Tapatalk
Click to expand...
Click to collapse
A custom kernel lets you overclock and under clock. So you can actually choose what speed you want your phone to run. First download the kernel put it on the root of your sdcard (not in any folders) go to recovery wipe cache and dalvik cache then flash kernel then reboot
Sent from my PC36100 using XDA App

The kernel controls certain hardware functions such as process scheduling, CPU clock speeds and voltages, frames per second, battery charge/discharge behaviors, etc. The best possible "layman's" analogy that I can think of is that a kernel is similar to hardware drivers that you install onto a computer. The drivers tell your system how to use whatever hardware components you've got installed.
There are a few rules with kernels though. You can't just download any kernel, flash it, and go on your way.
1. Sense kernels ONLY work with Sense ROMs. AOSP kernels ONLY work with AOSP ROMs.
2. Don't use a HAVS kernel if you're using setcpu.
3. Don't bother flashing a kernel if you don't know what a kernel is or are incapable of reading the sticky, at the top of this forum, whose sole purpose is to explain everything about kernels. Because chances are you're just going to screw up your phone.
Threads about kernels are one of the most common questions on this site, next to battery life issues and ROM preferences. Use the search feature. I guarantee there are a million threads that have already answered your question. If all else fails.....Google.
Edit: kernels do more than just letting you overclock your cpu like evo4gnoob said. If you don't know what a kernel is then you probably shouldn't be overclocking your phone anyway. And no, overclocking your Evolution is not like overclocking your computer. Again, you're likely to damage your phone if you just go and start tinkering without a clue as to what you're actually doing.

[Q] Should I update my kernel?

I am just wondering if I should update my kernel? I have been rooted since day one and I don't believe I have ever accepted any updates. I have also been running the MikG 2.1 rom for many months. The kernel I currently have is 4.54.651.1. I saw that I can download 4.67.651.3. I know there are also lots of others out there.
Will there be a big advantage to this, or should I just leave it alone. I am about to update to the MikG 3.1 rom in a few minutes is the reason I am looking.
Thanks.

Every rom you flash comes with a kernel, or it wouldn't boot. Just flash the mik rom you want, it will have what you need.
Now if you wanna ask about updating your radio, that's a whole different thing, and depending on how old your radio is, it is possible you may need to update your radio. But I'm guessing since you're on a relatively recent rom already, you won't have an issue with your current radio.
The only time I read that I HAD to update my radio to flash a particular rom was when the rom was built off a new OTA (going from froyo to GB), I believe. But that may have not even been true/necessary.
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You shouldn't "need" to update kernel. Many kernels available do have some improvements over the stock in regards to lower voltage for better battery performance, ability to over clock, other performance tweaks as well as hdmi stuff. Maybe none of those features will interest you but the option is there, flash a custom kernel and if you don't like it, flash the stock kernel. User experiences vary, you are the best judge of performance.

I was unsure about flashing a kernel for a while, it can be a little intimidating but u won't regret upgrading your Kernel. I eventually moved onto building my own kernel.
If you looking for a good sense kernel I would recommend Lionfish. Freedom and Chop Suey also are good kernels.
Sent from my Synergized Aggressive Lionfish Evo using the XDA app

Running Mikg 3.1 with LionFish Aggressive kernel. Been running great for a week or so, no issues
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