Develop Bugs

[Q] Questions regarding kernels and rom

Long time lurker, first time poster :3. Anyways, I have a few questions regarding the flashing of ROMs and kernels. I have been looking around for a nice ROM(s) or a kernel(s) to flash the t989. Currently I am running on rooted stock and want to mix it up a bit. I came across the Darkside X v1 Final kernel located here: http://forum.xda-developers.com/showthread.php?t=1466283&page=44 .
Now the question is can I flash this kernel but retain the stock ROM?
- any advantages vs flashing kernel and a new ROM?
- disadvantages?
Is there anything that I should be concerned about, or pay special attention to before proceeding with this?
Thanks!

ohaiu said:
Long time lurker, first time poster :3. Anyways, I have a few questions regarding the flashing of ROMs and kernels. I have been looking around for a nice ROM(s) or a kernel(s) to flash the t989. Currently I am running on rooted stock and want to mix it up a bit. I came across the Darkside X v1 Final kernel located here: http://forum.xda-developers.com/showthread.php?t=1466283&page=44 .
(1) Now the question is can I flash this kernel but retain the stock ROM?
- (2) any advantages vs flashing kernel and a new ROM?
- (3) disadvantages?
(4) Is there anything that I should be concerned about, or pay special attention to before proceeding with this?
Thanks!
Click to expand...
Click to collapse
(1) Yes you can, just wipe cache and dalvik cache prior to flashing kernel
(2) Depends on what the kernel has to offer. I'm not super well informed on tdjs kernel but for one you get BLN support which is great. You also get performance and battery enhancements plus many other goodies.
(3) Not really, any kernel on these forums is better than stock so you're looking at nothing but advantages.
(4) As long as you follow the proper steps to installing a kernel you should be fine. Common sense is your friend. Once you flash a specific kernel you might want to look at under clocking and under vaulting to extend your battery life with minimal performance decrease.
BONUS: TDJ's Darkside ROM and Eugenes Streamline Kernel are the best for me. Great stability, battery and performance. Refer to my signature for links.
Best of luck

The best advice I can give is Back up your stock rom with rom manager and back your apps with titanium, after that you can flash flash any rom and take it on a test drive to see how it feels. If you see it's buggy you can go back to the stock you had to begin with like you never did a thing.
Personalty I tried most of the ICS roms an found bugs I just couldn't deal with in one way or another. I did find this ICS rom today
http://forum.xda-developers.com/showthread.php?t=1623430
This has the leaked tmo kernel and radio making it almost the complete update we so deserve lol. anyway I put it on today and sofar all I could say is it is sweet no bugs this far and love the ICS......
Last advice is before flash do the darkside super wipe this does a better job then just wipe cache and dalvik cache and you dont lose the data you have backed up.
Oh also follow the directions from any rom to the tee to lessen the chance for problems

[Q] Questions regarding kernels and romArrow
Thanks for the input guys. Right now, I would like to experiment with a new kernel before going full-blown with a ROM...I will likely do that later down the road.
Now, while I was reading up on the various kernels and their offerings, another question popped into my head. Will flashing the phone with a new kernel purge pre-existing applications and settings? I will be backing up regardless, but I just thought I'd ask.

ohaiu said:
Thanks for the input guys. Right now, I would like to experiment with a new kernel before going full-blown with a ROM...I will likely do that later down the road.
Now, while I was reading up on the various kernels and their offerings, another question popped into my head. Will flashing the phone with a new kernel purge pre-existing applications and settings? I will be backing up regardless, but I just thought I'd ask.
Click to expand...
Click to collapse
no

delete thread please.

edit: nvm delete thread.

JellyBean isn't fully stable on our DHD/I4G just yet. There are always going to be some issues because HTC didn't give us a full 3.0 kernel for ICS. That could be the reason you are experiencing some lag. Kernels could also help you, try the KangBang performance kernel, although the kernel is leaning towards performance, so it could cause instability
I bought the xda app. Problem?

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I can't link to the kernel (cause I'm lazy and on the xda app). But when you install a kernel wipe your cache and Dalvik Cache and then flash. That's the proper way of flashing a kernel
I bought the xda app. Problem?

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sullyy94 said:
Hey thanks for the reply, yeah i successfully installed the stable and performance kernel from this thread : http://forum.xda-developers.com/showthread.php?t=1931386
But the gaming performance still lags compared to 2.3.5. I guess its due to not being fully stable yet.
I had an idea, what if i flash the stock 2.3.5 kernel? Would i get stock performance back or not?
Click to expand...
Click to collapse
You'll ruin your phone. A 2.3.X kernel I'd meant for that specific version of Android. If you mix versions (e.g. a Gingerbread kernel with a Jelly Bean ROM) you'll most likely get bootloops and your phone. At worst you'll brick your phone. Don't ever mix kernel versions. Also don't flash a Sense kernel on a AOSP/AOKP/CyanogenMod based ROM (or vice versa), you'll also have a phone that won't boot.
I bought the xda app. Problem?

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sullyy94 said:
Hey, thanks for the reply. Yeah I was guessing it had something to do with the kernel. I tried a kernel yesterday not sure which one it was from memory, but when I put the kernel zip onto the phone and installed it through recovery it said install complete. But when I rebooted the phone it gets stuck on a black screen. I can't do anything else unless I take the battery out. I was wondering if anyone can give me a link to the kangbang kernel and instructions in how to install properly if the recovery mode isn't the right way, even though it said kernel updated successfuly. Thanks!
Click to expand...
Click to collapse
The only compatible alternative kernel for JB is the KangBang (at least that i know of). If you flashed another one, that might be why it booted to a black screen.

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Request: Stock kernel with TWRP recovery

I would like to request a stock kernel with TWRP recovery.
I learned to root my ACE II (without increasing the flash counter) with the helpful posts found on XDA. I don't need a custom kernel for root, but it would be nice to have. I did try the HD kernels, but I found problems with stability and strange behavior like apps going missing, battery drain, reboots and such. So I have a rooted stock rom with stock kernel and my ACE II is working very nicely.
I realize we have a stock kernel with CWM.
I think we need a stock kernel with TWRP :highfive:
I did look at making one (a kernel) myself but I don't have the skills for that.
Again many thanks to the regular posters and the devs on XDA for teaching me how to root my Ace II.

gringosan said:
I would like to request a stock kernel with TWRP recovery.
I learned to root my ACE II (without increasing the flash counter) with the helpful posts found on XDA. I don't need a custom kernel for root, but it would be nice to have. I did try the HD kernels, but I found problems with stability and strange behavior like apps going missing, battery drain, reboots and such. So I have a rooted stock rom with stock kernel and my ACE II is working very nicely.
I realize we have a stock kernel with CWM.
I think we need a stock kernel with TWRP :highfive:
I did look at making one (a kernel) myself but I don't have the skills for that.
Again many thanks to the regular posters and the devs on XDA for teaching me how to root my Ace II.
Click to expand...
Click to collapse
Try this one. It's HD's TWRP but for me its already perfect and there are no issues like you mentioned.
http://db.tt/mV8t8MDW

[Q] please help

Hello all. First I want to thank everyone for still being around to help, especially on such an old device.
Anyway, I recently bought one of these and got it rooted via odin. Currently that's all I've done to her. I have been looking over this forum, android forums, and Google in general prior to posting, I want to solve problems on my own, but when I can't, I'm not scared to ask for help. And I need help with a few issues. I will seperate them, to make answering them easier.
1) is twrp not available for this model?
2) if not, the only other recoverys I can find is Phils TouchWiz, and ClockworkMod recovery touch 5.8.1.5. I wouldn't think these are the same, which is suggested? Also Phils Touchwiz was last updated (that I can find) to 4.1.2 which is where I currently am, am I want to go to 4.4
3) I only see 2 ROMs listed on here, and 1 is one of the ones I was thinking of using in Dirty Unicorns. The other I was thinking about was CyanogenMod. Which of these two is suggested?
4) I have no service on this phone, as its my tinkering device. The only thing I need to work is WiFi. That being said, do I need to flash a new modem?
Do I need to flash a new kernel?
Thanks for any help you can throw me. I know there are lots of tuts for all these questions, but frankly they are all very old, and this stuff changes by the day...

1. Yes but this device has recovery and kernel built in together, this recovery is only for flashing / wiping, other than that, it is not usable with other custom roms unless the devs build it to use that
recovery along with the kernel.
2. It's the same as question 1, For Touchwiz Jellybean, you'll need a recovery kernel that supports the android version and firmware, otherwise it wouldn't work or boot up, Agat's Source GB27 for GB27 Touchwiz ROMs. Or specific AOSP Kernels for certain kernel build updates ( versions are compatible with the build date of the ROM's Original Kernel, meaning it only works on certain ROMs that are updated with the same kernel build, for example, A custom 0.0.25 will not work with stock 0.0.26 because there was a major update change in the kernel that'll make 0.0.25 not usable on it. If you use a kernel based on a specific date on an AOSP ROM that frequently updates the kernel, it may not boot up. )
3. The AOSP ROMs that are being updated at the moment are the Teams that do Nightlies. So Cyanogenmod is the only AOSP ROM that's being updated weekly for this device, I have not checked on the other ones.
4. No need to flash a modem if you don't have data service, however it may help either way when using WiFi due to dropped connections, stability etc. For AOSP, use any ICS modem, for Touchwiz, use the same android firmware modem.
Flashing a new kernel is not needed unless you don't like how the stock kernel performs whether if it's power saving or performance. AOSP kernels are kind of limited as the ones out now work with different build dates of the ROMs, Touchwiz has a couple, but Agat63's Source Kernel is recommended by everyone for GB27.

Custom rom?

Hello everyone. I was just wondering what people were using for a good performance custom rom and kernel. Atm I'm using the stock pie software and NSFW-Kernel 25 custom kernel. The phone keeps freezing on me and rebooting. Not sure if this is because I'm using custom kernel with stock os? Thanks for all the help I've gotten in this forum on my rooting adventure, you all are the best and I appreciate it.

I'm using Pixel Dust ROM with King Kernel flashed. Wiped my phone and clean installed everything, works smoothly and quickly.

Pixel Dust for Pixel XL
1xdroid said:
Hello everyone. I was just wondering what people were using for a good performance custom rom and kernel. Atm I'm using the stock pie software and NSFW-Kernel 25 custom kernel. The phone keeps freezing on me and rebooting. Not sure if this is because I'm using custom kernel with stock os? Thanks for all the help I've gotten in this forum on my rooting adventure, you all are the best and I appreciate it.
Click to expand...
Click to collapse
I'm also using Pixel Dust ROM with it's own Kernel. I also wipe the phone and clean install everything from start, not using the restore feature. I sync Contacts, Calendar and Tasks between the phone and MS Office 2016 using MyPhoneExplorer (free App). Phone history and texts are not transferred but I keep a copy on the PC through MyPhoneExplorer.
This type of clean install has always given me the best results for performance and a stable phone no matter which custom ROM I try.

The best way to find out is to start flashing ROMs and see which one you like best. What I like or feel is the best will be subjective. Try them all and see what fits you best.

Thanks for all the feedback. I was thinking of trying lineage os, but I don't think v15 is pie and v16 that's based on pie isn't out yet I believe. Also was gonna try the elemental x kernel.

That kernel is good if you are on stock. It can act odd on certain ROMs other than stock.