I know you need to do perf unlock now, but even when I do that setCPU still has shows the processor as fluxing all over the place. I had to uninstall it.
Guess I'll have to install a custom kernel.
Is anyone else having these problems?
If I install a custom kernel, will flashing a nandroid backup of what I had before hand get me back to before I flashed? Or are kernels more permanent than, say flashing a ROM? Do i need to wipe anything before flashing the kernel?
If you nandroid it will save your kernel. I recommend nandroiding then wiping cache/dalvik and flashing the kernel. then if you want to go back you can just restore. For the most part flashing a kernel should not mess up anything that would require you to re-setup your whole phone. it should be pretty painless.
If you can find a separate zips for the original kernels it is very much like flashing a rom. I am not sure if it will fix your problem but i do know i haven't had that problem using netarchy's kernel (as long as you dotn mind the 3MP back camera)
Related
I'm a little confused on the subject of kernels and roms. Im not sure whether you have to start fresh on your phone every time you change either the rom or the kernel. If you don't have to start fresh, I mean redo all your apps and settings etc, then I would be a lot more tempted to play around with more roms and kernels.
On a second note, if I wished to change a rom or kernel, what do i need to do while in recovery, minus making a nandroid backup.
Any Help is Welcome! Thanks!
You can change a kernel without much effort and without wiping anything out. In recovery, wipe dalvik cache, and then flash the kernel. It should be a signed flashable zip.
But kernels are tricky. If you use the wrong one, you could lose things like bluetooth. Some are designed for AOSP roms, and some are designed for Sense roms, so just make sure you pick a kernel that is compatible with the Rom you are using.
Once the new kernel is flashed, you will probably not notice anything has changed, because the kernel handles all the underlying processes.
Roms on the other hand, change everything. When flashing a new rom, it's always a good idea to do a complete wipe of your phone. Even if you are flashing a newer version of the same rom.
You can use apps like Titanium backup to restore missing apps, and settings once the new Rom is on.
Thanks
Thats great to know. Thanks so much.
Hi all. New at flashing on the Evo. I'm currently running the Elite I ROM. My question is, can you flash just a kernel or is that a part of the kitchen process and is included in the ROM, such as the Elite I that I'm running. Curious if I can flash a kernel alone, and if so, when I wipe wouldn't that wipe the ROM off too? I'm trying to improve my battery life on the phone and appreciate a quick q&a on kernels and the in's and outs. Thanks!
Do a nandroid backup first, then flash the kernal you wish to try out. If you don't like it, restore the nandroid and then flash another kernal.
Usually try to give a new kernal a day or 2.
Every phone is different, so someone might get great results with one kernal where you don't get the same. So try them out.
So the nandroid backs up kernel and ROM, right? If so, then I flash new kernel and i'll have the current ROM and the new Kernel??? That being said, what about wipe? Do i wipe? Is there a choice to just wipe kernel? Thanks!!!
surrealmethod said:
Do a nandroid backup first, then flash the kernal you wish to try out. If you don't like it, restore the nandroid and then flash another kernal.
Usually try to give a new kernal a day or 2.
Every phone is different, so someone might get great results with one kernal where you don't get the same. So try them out.
Click to expand...
Click to collapse
where the hell did you come up with that garbage?
you don't need to do a nandroid. Only if you want to go back to the original kernal for some reason.
you do need to wipe cache and delvik cache before flashing a new kernel. If you don't like the kernal you flashed, go back to recovery and repeat with a wipe of cache and delvik-cache, and then flash a different one.
I have never flashed a rom to my current evo which is rooted and I love it. My question is how do I go back to my current stock state if I don't like rom. I have nandroid backups and will make another before I flash a rom, I know how to clear everything out before flashing the new rom. Can I just restore the nandroid back to return to the stock rom or do I have to do something else. Also what kernel should I use if I want to check out CM7. I have read that a lot of people use either Tiamat or Savaged-Zen. Thanks in advance.
Smurph82 said:
I have never flashed a rom to my current evo which is rooted and I love it. My question is how do I go back to my current stock state if I don't like rom. I have nandroid backups and will make another before I flash a rom, I know how to clear everything out before flashing the new rom. Can I just restore the nandroid back to return to the stock rom or do I have to do something else. Also what kernel should I use if I want to check out CM7. I have read that a lot of people use either Tiamat or Savaged-Zen. Thanks in advance.
Click to expand...
Click to collapse
That is correct, all you would need to do is restore a nandroiid backup, to return the exact point you were at when you created that backup. Simple as that. As far as kernels, either of the two you tried should work great. Every phone is different, so try them out and see how they run. I'd also give the stock CM kernel that comes with CM7 a chance, it ran beautifully on my device, fwiw.
I agree with buckley in regards to just using the stock CM7 kernel. I'm pretty sure Cyanongen and Co. know what they're doing...
Great then I think that I will try to install CM7. Also do I need to do the gps fix now while I'm on the stock rom or do I needed to just wait to see if I have gps problems first. Also will CM7 replace my Amon-Ra v 2.3 with Clockwork recovery.
Sent from my PC36100 using XDA Premium App
Flashing CM won't effect your recovery. Also, I think you can do the GPS fix now before you flash. Either way, couldn't hurt.
After flashing a kernel, they say to do a full wipe (and then reinstall the ROM?).
My question is whether after the wipe, can I restore a nandroid backup? Setting it up from scratch and just the way I like it is quite tedious if I were to do this each time, plus download the apps from the market etc. My arc is my main phone so I don't have the luxury of flashing ROMs and kernels all the time.
Do let me know if that's possible. If not, can you tell me how you guys do it?
My arc is running Stock ICS 4.0.4 with an unlocked bootloader.
I believe you got it all wrong.... you need to do a full wipe before installing a new ROM (to make sure it works properly and nothing is left from the old one).... not a kernel... You can flash kernels as often you want without any wipes. Just dont forget the WIFI-modules (only of needed by ther kernel).
xtacy! said:
My question is whether after the wipe, can I restore a nandroid backup?
Click to expand...
Click to collapse
Just think about it, it would be pointles to delete evrething and then restore it back..
P.S.: sh*t I pushed the wrong button and thanked you instead of quote....
yea..there is no point restoring the nand after flashing a kernel...full wipe and fresh installing rom is highly recommended..
Best way is to tryout a kernel..if everything is well and good then better stick to it.
afterall wat do u look in a kernel? OC,UV, good battery life and smooth UI..once you attain all these then stick to it..
btw i have tried many kernels this month without doing a full wipe..i never faced any problem as such..i just uninstall all OC, UV apps just to be safe
Thanks for the replies guys. And an extra thanks to Antochrist for his mistake. LOL!
Another reason for my question was because one of the kernel developers said to do a clean install.
Let's say I flash a kernel with additional wifi modules. Suppose I want to get back to stock kernel and its wifi modules, do I just flash the stock kernel or do I need to do anything extra to fix the wifi?
xtacy! said:
Let's say I flash a kernel with additional wifi modules. Suppose I want to get back to stock kernel and its wifi modules, do I just flash the stock kernel or do I need to do anything extra to fix the wifi?
Click to expand...
Click to collapse
yea u just need to flash the stock kernel as wifi modules are included in the stock kernel itself
xtacy! said:
Thanks for the replies guys. And an extra thanks to Antochrist for his mistake. LOL!
Another reason for my question was because one of the kernel developers said to do a clean install.
Let's say I flash a kernel with additional wifi modules. Suppose I want to get back to stock kernel and its wifi modules, do I just flash the stock kernel or do I need to do anything extra to fix the wifi?
Click to expand...
Click to collapse
I think clean install only needed for new rom, not new kernel
cmiiw
Sent from mobile
Similar issues
Happy new years everyone!
I am pretty new to using custom ROMS and kernels and have made a standard noob mistake
which was forgetting to back up all the original software (ROM, kernel, etc). I realized this quite later
and though I have found the original ROM for my GT-P5110 I seem to have trouble finding the stock Kernel
(the one it had when it left the factory; 4.0.4) I did a search and have found my search-fu to be weak.
Can anyone help me find the stock rom for the GT-P5110 (Galaxy note 2 10.1)?
And one more thing, should I get the Galaxy S3 LTE vs. LG Optimus G vs.your opinion?
(I am in South Korea btw) Is Korean version is any different or any harder to root or to
flash a custom ROM, anyone have any experience?
Many thanks
But I did not get the Right Answer...
arpith.fbi said:
yea u just need to flash the stock kernel as wifi modules are included in the stock kernel itself
Click to expand...
Click to collapse
Thanks for the info that WIFI modules are included in the kernel and no extra additions need to be made.. I Don't know abt it ..
NOW assuming u now a lot abt Linux/Android could you please answer this for me..
- Does Restoring NANDROID
- Restore 'Stock Kernel' along with 'RIL file', RAMDISK - INIT### n stuff
Which Hyperion users need to fiddle with..
But kernel and ram disk are stored in the boot partition so does NANDROID back that up too ?
and Can you help me with RIL file related info..
Thanks
NANDroid only backs up ROM. It doesn't back up kernel. Kernel is always flashed externally, it's the same with all Android devices.
僕のLT18iから送られてきた
I have a GSM Galaxy Nexus and I am currently using 4.2.2 Cyanogen Mod released in April 2013.
It has the following Kernel
3.0.31-cyanogenmod-g64e9296
I have flashed ROMs many times mostly CM ROMS.
I want to try changing kernel to improve battery life and check what kernel changes actually is all about.
Since I havent done it earlier, I want answers to following questions:
1) Is it safe to change my kernel to another one? I want to install http://forum.xda-developers.com/showthread.php?t=2115590 or maybe someone can tell me a better one with focus on improved battery life.
2) What if the above kernel screws up? can I recover the old kernel back?
3) Is kernel flashing Permanent or any ROM I flash will have it's own kernel?
4) Just in case my kernel screws up, I have a full TWRP backup as well, would flashing that change my current kernel to old one that came with cyanogenmod last ROM?
Thanks.
You can pretty much flash any kernel you want. Just make sure the kernel is made for the version of Android you are on. If something goes wrong, you should be able to flash your ROM again and get back to normal. ROMs come with their own kernels so every time you flash a ROM, you will get the kernel that comes with it. But the best way to recover from a screw up is to restore a nandroid from your recovery.
jsgraphicart said:
You can pretty much flash any kernel you want. Just make sure the kernel is made for the version of Android you are on. If something goes wrong, you should be able to flash your ROM again and get back to normal. ROMs come with their own kernels so every time you flash a ROM, you will get the kernel that comes with it. But the best way to recover from a screw up is to restore a nandroid from your recovery.
Click to expand...
Click to collapse
Advanced restore should work, no need to restore the whole thing, just system.img and boot.img should do the trick.
Sent from my Nexus