Is it possible to control kernel frequencies with a stock rom and kernel with root privileges?
My S4 is on MJ7. I want to control the minimum frequency the processor clocks down to. I feel its too low and causes the phone to stutter for a moment before increasing. Will the kernel and rom allow me to do that once I have root privileges?
Also, as I understand, ME7 and MI1 can't flash custom kernels. Is that correct?
Finally, I understand the G2 has loki to get around its bootloader. Can you flash custom kernels on that? I would be getting a Verizon Wireless model.
After two years with a galaxy nexus, I now see how bad the situation has become for modders on AT&T/VZW.
Thanks for your help
Related
Hi,
Quick question I am still having trouble wrapping my head around the concept about kernels. I am planning to root my nexus 4 and flash a custom rom (purity rom) but am i required to also flash a custom kernel? Or am I suppose to leave the kernel as is?
Thanks!
Next123 said:
Hi,
Quick question I am still having trouble wrapping my head around the concept about kernels. I am planning to root my nexus 4 and flash a custom rom (purity rom) but am i required to also flash a custom kernel? Or am I suppose to leave the kernel as is?
Thanks!
Click to expand...
Click to collapse
Depends upon your requirement .
As an example i use Fast USB charge a lot and is not available in any custom rom .
I also use Headphone volume boost which is yet again a kernel level change.
I would suggest you to use a custom kernel since it also gives better battery than stock .
If you are happy without it then forget about kernels . And in case u plan on flashing one make a CWM backup just in case.,
You could if you want to since you're already flashing custom roms. However, most custom rom come with custom kernel, so when you flash a custom rom it will replace your kernel with it's own. You can manually flash back your stock kernel if you want, using fastboot, but there is a flashable package as well in the Dev section.
Just know that due to codes and drivers, different kernels work with different roms. If you flash a 4.3 kernel to a 4.4 rom, it might lack certain necessary driver, such as PRIMA, so your wifi will no longer work. (You can fix this by flashing dePRIMAtor). CyanogenMod use Code Aurora Forum drivers, so if you use a kernel that doesn't support CAF, the screen colors will be messed up (you can lash a colorfix package which replace it with the non-CAF liboverlay.so).
A lot of people get wrapped too far up into flashing kernel and thinking it determine everything (performance + battery life) in their phone. As much of a heavy flasher that I am, I am willing to bet that you generally get the best battery life and stability just running stock. I did my own trial for this, with stock rom and kernel, the phone staying cooler and screen on time was longer. This is just my personal experience, it varies for each person.
But I mainly use custom kernel for features. Such as kernels that incorporate Faux color and sound, this allows changing their settings for much a better screen color and making the speaker louder. I also use the sweep2wake/sleep feature to turn on and off the screen.
If you intend to use custom kernels, I recommend using TricksterMod, it's the best app for modifying kernel settings.
Also just to mention this ahead of time, it's against XDA rules to make threads about what is the best rom/kernels.
Hey folks I have the i9500 and all i want is to undervolt to reduce the excessive heat generated from this phone. Any kernel working on android 5.0 (AOSP or Stock) with undervolting support?
Thanks
Unknown. I was going to mention the kernel I used, but then realized you were asking about the I9500.
Well forgive me for my noobiness, but is there any way to enable the voltage settings in the stock kernel? I see some custom roms having "battery tweaks" which I guess is undervolting.. Any developer who can clarify much appreciated
The main problem you're going to have is one of availability. There simply aren't that many ROMs for the I9500, and probably fewer kernels. For the I9505 I know of two kernels that support undervolting, because I've used both of them. But the I9505 uses a Qualcomm processor rather than the Exynos processor, so those kernels will be of no use to you. Did you look in the I9500 Android Development subforum to see what's there?
Not yet but Perseus kernel dev said that he will update his kernel to lollipop when he has finished some other thing.
Also battery tweak in custom rom is not undervolting or unlikely to be. Since undervolting is device dependent.
well that is very likely, but I read somewhere (dont remember which rom ) that the kernel was undervolted -50 mV across all frequencies which should be stable for most chipsets, so was just thinking if devs could access the voltage tables and modify it using tools like synapse. (again apologize for the noobiness).
edit - well of course devs could do that andrei and maxfu come to mind, but can it be enabled or accessed on a stock kernel by a normal user?
Hi, I have a Samsung Galaxy Note 3 N9005.
I installed a custom recovery and rom 2 days ago, first rom being phronesis 2.0 rom.
From there I tried overclocking my device but all apps show me 2.26ghz is the max my device can go, apps used include: kernal auditor, setcpu, trickster mod and no frills cpu control.
I searched the forums a bit and so I thought flashing a new kernel would help. I flashed Arter97s kernel and it still didn't allow me to overclock higher than 2.26 ghz, then I tried audax's kernel with no luck.
Then today I moved on to Tesla 5.1.1 Rom, and I still cannot overclock higher
I yet again reflashed arter97s kernel and still I am having no luck.
Any help?
Thanks
owner eod
This is the limitation of the kernel. It provides the frequencies it supports, so you need a kernel with OC support. I do not OC, so sorry, no clue which to take which even is allowed to talk about here. ShinTo was supporting it AFAIK, but they had to leave due to not providing the source and thus violating the GPL.
Overclock
emuandco said:
This is the limitation of the kernel. It provides the frequencies it supports, so you need a kernel with OC support. I do not OC, so sorry, no clue which to take which even is allowed to talk about here. ShinTo was supporting it AFAIK, but they had to leave due to not providing the source and thus violating the GPL.
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I am able to overclock my 9005 up to 2.7GHz with mentioned apps. I am not sure which kernal I am using. I have Phronesis 5.0 on and am getting ready to flash 5.2. The only shlep is that I need to set the frequency after each reboot. I wish this could be included in a kernal.
Try using leankernel: http://forum.xda-developers.com/showthread.php?t=2488082 I had same kind of problem then I flashed this and used kernel auditor. Now everything works perfectly!
Can't Flash Kernel on note 3 sm-n900
I have been looking for solution at multiple sites. Hope to get answer here. I have downloaded a stock rom lollipop for my note 3 sm-n900.
I was successful at overclocking it to 2.1ghz but i want it to be at 2.7ghz and the current kernel does not support it.
I tried flashing three different kernels lk-hltemo 6..., lk-hlte v6 and lk-hlteu 6... using CWM and TWRP but kernel didn't flash.
Somebody pleaseeeee helppppp....
Read the thread .
But if you dont know what you are doing you will brick your phone .
Hello all!
I want to root my Note 4 so I could remove bloatware, earphone volume restriction, wakelocks, etc and use a custom ROM but, reading at the forum, it looks like somethings are different now since I last rooted a phone( LG G2). Can you guys help me with some question?
1- I have a Galaxy Note 4 910C with 5.1.1 stock rom installed. What kernel( I don't want anything special here, only an good overall perfomance and battery life) do you guys think I should use since now a custom kernel is must for rooting?
2 - I'm also looking into using DN5 or Sixperience custom ROM and I always see people talking about new bootloader and modem. What are those?
3 - Is anything else I should know before rooting( custom kernel -> TWRP for recovery - Custom ROM)?
Thx in advance
Hasmodye said:
Hello all!
I want to root my Note 4 so I could remove bloatware, earphone volume restriction, wakelocks, etc and use a custom ROM but, reading at the forum, it looks like somethings are different now since I last rooted a phone( LG G2). Can you guys help me with some question?
1- I have a Galaxy Note 4 910C with 5.1.1 stock rom installed. What kernel( I don't want anything special here, only an good overall perfomance and battery life) do you guys think I should use since now a custom kernel is must for rooting?
2 - I'm also looking into using DN5 or Sixperience custom ROM and I always see people talking about new bootloader and modem. What are those?
3 - Is anything else I should know before rooting( custom kernel -> TWRP for recovery - Custom ROM)?
Thx in advance
Click to expand...
Click to collapse
1-2. If you need all the functions of the phone then stock kernel is best as some of it don't work right on custom kernels unless the developer of the custom rom has done something about it when changing the stock kernel for a custom. "Welcome to TW roms" Compared to other manufactures its a pain in the beep to use Sammy's TW but I do love the whole spen feature.
I don't have a C so cant tell you much about there battery life but a solid rom on stock kernel can be very good and mix it with what ever app you use to freeze apps and its good. I use 3c toolbox "paid version" the best app ever.
Bootloaders and modems must match the rom version you want to flash or you will end up in bootloops so example if you want coi3 based rom then bootloader and modem must be coi3 as well or it wont work. in odin BL = bootloader and CP = modem.
3. use odin to flash the recovery and rooting I cannot remember as I did that only once which was a few weeks after note 4 was released so much could have changed since that.
So now that we know Oreo 8.0 is the last official version for our X compact, is there any way to overclock the cpu?
I mean it is already fast enough for anything but still I would like the ability to do that, even underclock it a little.
can we make a custom kernel for this device? or is there a way to edit the stock kernel with new clocks?
well i dont have much information about these thing, i only know that we need a custom kernel for overclocking and stuff.
Im on unlocked and rooted stock .118 oreo.
Also, is there a way to upgrade adreno/vulkan drivers on this device? they are outdated and recent drivers have been reported to be much better in other devices but why not sd650?? LINK HERE