Screen tearing/GPU issues with custom kernels - Nexus 7 (2013) Q&A

So far i've tried both faux and flar2's elementalx kernels on CM10.2 nightlies, and they both produce the same result. lag and screen tearing after playing a GPU intensive game such as Asphalt 7 and 8. I've mentioned this before, but apparently nobody else has had the issue. I'm starting to think my Nexus 7 is again having issues. If so it's going back for good.
It does not behave this way on the stock CM 10.2 kernel, so I'm not yet 100% sure it is a hardware issue. All settings are on stock with no overclocking as part of my test to see if I can figure out why.
You can see what it does in the video posted below: It was taken after playing Asphalt 7 for around 20 minutes.
https://dl.dropboxusercontent.com/u/17013328/N7screentearing.mp4
Can someone confirm this as a problem on their nexus 7 with custom kernels as well?

bump, i wanna know if there is a kernel that has vsync enabled... and how to enable it if it is off

You need to add voltage. Most kernels come undervolted. Some handle it better than others. Raise your CPU or possibly GPU voltage slightly and see if it gets better. Small increments. If you need to add too much voltage then it is something else. That is the first thing I'd try, especially since its on multiple kernels.
Sent from my AOSP on Flo using Tapatalk 4

CM drops frames playing something basic like super hexagon, for me. I haven't tried custom kernels yet but the stock CM one is crap. CM in general has just gone off the rails recently, stupid jss/jwr confusion and **** performance on nexus devices.

darkrom said:
You need to add voltage. Most kernels come undervolted. Some handle it better than others. Raise your CPU or possibly GPU voltage slightly and see if it gets better. Small increments. If you need to add too much voltage then it is something else. That is the first thing I'd try, especially since its on multiple kernels.
Sent from my AOSP on Flo using Tapatalk 4
Click to expand...
Click to collapse
Over-volting! it worked! i just added one step to all the clock speeds, no more screen tear!
but i want to know why it happens on the default voltages, i mean technically, why the tearing appears on low voltages?
EDIT: nope... screen tearing is still there... i added 2 steps to all of the clockspeeds, it's not solving the issue.
Sent from my Nexus 4

freeza said:
So far i've tried both faux and flar2's elementalx kernels on CM10.2 nightlies, and they both produce the same result. lag and screen tearing after playing a GPU intensive game such as Asphalt 7 and 8. I've mentioned this before, but apparently nobody else has had the issue. I'm starting to think my Nexus 7 is again having issues. If so it's going back for good.
It does not behave this way on the stock CM 10.2 kernel, so I'm not yet 100% sure it is a hardware issue. All settings are on stock with no overclocking as part of my test to see if I can figure out why.
You can see what it does in the video posted below: It was taken after playing Asphalt 7 for around 20 minutes.
https://dl.dropboxusercontent.com/u/17013328/N7screentearing.mp4
Can someone confirm this as a problem on their nexus 7 with custom kernels as well?
Click to expand...
Click to collapse
I have not used CM in a while but doesn't it still use a CAF based kernel? If so I know Flar will not make a kernel that is CAF based he only supports AOSP. Most likely that is why you have tearing. You need a kernel that specifically states it works with CM.
Sent from my SM-P600 using XDA Premium HD app

nrage23 said:
I have not used CM in a while but doesn't it still use a CAF based kernel? If so I know Flar will not make a kernel that is CAF based he only supports AOSP. Most likely that is why you have tearing. You need a kernel that specifically states it works with CM.
Sent from my SM-P600 using XDA Premium HD app
Click to expand...
Click to collapse
Honestly CM doesn't play nice with anyone/anything any more. They do their own thing and want to be separate and "special" so nothing works well if you try to change anything. Their stock kernel sucks, and their compatibility with other kernels is slim to none. Best bet is finding a rom that is less restrictive.

just to be clear here, i'm on stock 4.3.
i was on stock kernel when the tearing happened, i moved to a custom one with vsync... same issue. overvolted, same... i also changed governors too, but the tearing is always there.
a temporary solution is to lower the graphics, but the nexus 4 supports the highest graphics, so i want to fix this on high

nrage23 said:
I have not used CM in a while but doesn't it still use a CAF based kernel? If so I know Flar will not make a kernel that is CAF based he only supports AOSP. Most likely that is why you have tearing. You need a kernel that specifically states it works with CM.
Sent from my SM-P600 using XDA Premium HD app
Click to expand...
Click to collapse
You nailed it. I figured that out a while ago but thanks for replying

just switched to stock JWR, and the screen tear disappeared!

Related

[Q] Overclocked Kernels

Merry Christmas everyone! I hope everyone received all the tech goodies we wanted for Xmas!
I've noticed that most of the ROM's available in the development section already have an Overclocked Kernel and also UV options. I personally would rather use a stock kernel, or a custom kernel that is not overclocked. Right now I don't see that available from what I've searched for.
There are a couple ROMs I'm interested in running, but both install a new OC kernel. Is it possible to strip the kernel from the ROM before installing? And if so, does anyone know a tutorial for doing so, or is it as simple as opening the archive file, stripping the kernel out, and rezipping the file?
I know there are apps like SetCPU to change the clock speed on an OC ROM, but I really don't want to depend on software to keep the OC from occuring. I hope I was clear enough in my post to get the point across lol! Thanks for any assistance gents (and ladies).
Franco's kernels don't have OC
Sent from my Galaxy Nexus using xda premium
Thanks Josh! Appreciate your input. I am still interested in the other option as well, stripping the kernel from the ROM.
I am not sure how to repackage the from after you do that, but if you extract the rom the kernel is called "boot.img" and you can flash it in fastboot so you can basically flash any kernel you want on any rom
Sent from my Galaxy Nexus using xda premium
Just curious why you wouldn't want an OC/UV kernel, you're getting better performance and better battery life, no downside imo.
ikon8 said:
Just curious why you wouldn't want an OC/UV kernel, you're getting better performance and better battery life, no downside imo.
Click to expand...
Click to collapse
I honestly just don't like to OC my CPU's. In the long run it will decrease the life of the CPU.
Besides, if you have a great AOSP ROM to run, there really is no need to OC at all. Any performance boost from the OC comes at the cost of shortening the life of the CPU.
Sent from my Galaxy Nexus using Tapatalk
I've run Intel chips at 40% OC for a decade at a time, with little impact.
I don't expect my Nexus, with or without <20% OC, to last me nearly that long.
Just sayin'....
-bZj

[Q]Which Kernel are you using?

Hello All!
I made a similar thread to this over at the SGSII forums and was wondering what your answers are. So, the question is simple, which Kernel are you using and is the battery decent? Or a pile of rubbish? Lemme know. Poll has been setup with the main Kernels, I'll put an "other" option for people who are using new Kernels.
So, poll away!
-N
was using James Bond kernel 1.35 OC UV, never crash or lag. far better battery life than stock and super smooth.
right now i am testing faux123's kernel V9u for 4.0.2.
zeke1988 said:
was using James Bond kernel 1.35 OC UV, never crash or lag. far better battery life than stock and super smooth.
right now i am testing faux123's kernel V9u for 4.0.2.
Click to expand...
Click to collapse
I tried Faux 4.0.3 Kernel yesterday, battery was losing 2% every 30 mins on idle, with next to 0 apps installed.
Running Stock AOKP Milestone 2 kernel, whichever kernel that is!
I wanna try different kernel but my ROM is perfect, not sure sure what other kernels may add that my rom already has and does.
mellll said:
Running Stock AOKP Milestone 2 kernel, whichever kernel that is!
I wanna try different kernel but my ROM is perfect, not sure sure what other kernels may add that my rom already has and does.
Click to expand...
Click to collapse
As far as features go, Franco.Kernel adds color and vibrance to your screen. Its also tweakable so you can customize the color settings as you please. Battery is apparently awful though.
Nitroz said:
As far as features go, Franco.Kernel adds color and vibrance to your screen. Its also tweakable so you can customize the color settings as you please. Battery is apparently awful though.
Click to expand...
Click to collapse
thank u. just flashed that kernel, latest. but i dont see color control option anywhere... its supposed to be built in the kernel but i dont see it...
unless i have to pay for the app he has which i dont wanna just for a color change.
am i just blind, not seing that option arggh
:update
ok got it, commands.
Nitroz said:
As far as features go, Franco.Kernel adds color and vibrance to your screen. Its also tweakable so you can customize the color settings as you please. Battery is apparently awful though.
Click to expand...
Click to collapse
I am sort of noticing that battery life isn't so great too, although I wasn't sure since I haven't been running it for very long.
I was also looking for the best kernel.
Everybody talks about franco.Kernel. I will give it a try though.
Was using Franco's until earlier and now back to the Apex kernel that comes with bigxie's AOSP build
Eh? Franco kernel has the best battery life for me.
Sent from my Galaxy Nexus using xda premium
I just loaded on Lean kernel yesterday. Initial indications are that the battery life is extremely good.
180mhz cpu while screen off = happy battery.
Giving glaDOS a try.. it has some cool features like turn the screen on by touching it.. also has color control and battery life seems pretty decent so far. Big fan of imoseyon though.
Sent from my Galaxy Nexus using xda premium
I'm currently on Bigxie Build 8 with the Kernel included with it. Battery is pretty good. Underclocked my CPU to 970MHz. Losing 2% battery overnight (About 8 hours) and High usage I'm getting a decent amount of battery.
I'm wondering: I'm running ARHD 2.1.3 and thinking about flashing a kernel. Franco's had more options, but I'm getting that Jame Bonds kernel has a better battery life. That appeals to me. edit: ah, I see that Franco's is only for 4.0.3
Still, when I flash the kernel with ARHD 2.1.3 running, is it better to flash the anykernel.zip or should I just flash the original kernel?
Argh, just in the fun, looking for the best kernel. I'm between Franco's and Der Kernel Trinity NP (by the way, NP, Google, don't let Samsung impose it's boring naming system)
Trinity offers 512OC for the GPU, but I'd say Franco gives a better battery life....
Hmmmm difficult decision, isn't it? What do you guys think?
Currently rocking the Trinity kernel with mildly OC'd GPU (384 MHz).
I'm using imoseyon's kernel. I love minimalist kernels. Stable, fast, and not full of crapfeatures that just cause everything to crash and SOD and bootloop.
I think it's probably a good idea to give a try first of the kernel that comes with the ROM. Developers often adjust the ROM around the kernel they use and vice versa.
i went back to the James Bond kernel, no reboot or lag.
Lean IMO
Sent from my Galaxy Nexus using XDA Premium App

[Q] GNexus Kernel Choice

Loving my GNex, however I've only had it a couple weeks.
There are several kernels out there, and from comparing all of them and reading all the threads as much as I can, they all seem to have relatively similar features... I'm having a hard time picking one.
Is there someone who can clarify the differentiating features of each kernel? Are certain kernels better suited for different ROMs? Do certain ones have compatibility or other persistent issues?
Mainly:
faux123
franco
GlaDOS
jamesbond
Trinity
I've tried faux123 015m (loved faux's kernels on the Sensation, but I had some mobile data issues with it on the GN) and Trinity (latest seems fast/stable, except the color profile was messing with me). I'm trying GlaDOS now. Again, though, I'm not sure what advantages or perks one kernel flavor gives me over the next. Can anyone shed some light?
grivad said:
Loving my GNex, however I've only had it a couple weeks.
There are several kernels out there, and from comparing all of them and reading all the threads as much as I can, they all seem to have relatively similar features... I'm having a hard time picking one.
Is there someone who can clarify the differentiating features of each kernel? Are certain kernels better suited for different ROMs? Do certain ones have compatibility or other persistent issues?
Mainly:
faux123
franco
GlaDOS
jamesbond
Trinity
I've tried faux123 015m (loved faux's kernels on the Sensation, but I had some mobile data issues with it on the GN) and Trinity (latest seems fast/stable, except the color profile was messing with me). I'm trying GlaDOS now. Again, though, I'm not sure what advantages or perks one kernel flavor gives me over the next. Can anyone shed some light?
Click to expand...
Click to collapse
I have tried them all myself at one time or another and i always come back to GLaDOS. I chose to run this because of the unique and innovative features Ezekeel has developed plus the great battery life. BLX, Vibration control, Touch Wake and of course the Wheatley Governor which was developed for this kernel to give the best performance and battery life, which in fact it does. The GLaDOS control app is great too and Ezekeel is always updating and making it better.
GLaDOS is exclusive to Rootzwiki that why you don't see too much mention of it here unfortunately ... I'm not even sure if Ezekeel lurks around here anymore?
Leankernel for me
blowtorch said:
I have tried them all myself at one time or another and i always come back to GLaDOS. I chose to run this because of the unique and innovative features Ezekeel has developed plus the great battery life. BLX, Vibration control, Touch Wake and of course the Wheatley Governor which was developed for this kernel to give the best performance and battery life, which in fact it does. The GLaDOS control app is great too and Ezekeel is always updating and making it better.
GLaDOS is exclusive to Rootzwiki that why you don't see too much mention of it here unfortunately ... I'm not even sure if Ezekeel lurks around here anymore?
Click to expand...
Click to collapse
I noticed he released a control app, I may give it a try!
franco
Thanks for your responses!
However it looks like people are just posting what they use. What I'm looking for is information on what differentiates each kernel.. what is each kernel's "claim to fame"? From what I've seen, all of the kernels' features look pretty similar.
For example, "X kernel balance performance and battery really well. Y kernel reduces the voltage to the screen to further battery savings. Z kernel is more focused on performance. A kernel allows your phone to make popcorn." etc.
Or are they basically the same?
Thanks blowtorch for giving some information as to what differentiates GlaDOS from the rest
grivad said:
Thanks for your responses!
However it looks like people are just posting what they use. What I'm looking for is information on what differentiates each kernel.. what is each kernel's "claim to fame"? From what I've seen, all of the kernels' features look pretty similar.
For example, "X kernel balance performance and battery really well. Y kernel reduces the voltage to the screen to further battery savings. Z kernel is more focused on performance. A kernel allows your phone to make popcorn." etc.
Or are they basically the same?
Thanks blowtorch for giving some information as to what differentiates GlaDOS from the rest
Click to expand...
Click to collapse
Jamesbond will likely give you best battery life and stability. He has a couple of other kernels with some performance boost. Glados was buggy as hell and some other things but that is for you to decide. Other kernels for me were kind of meh. I honestly dont understand how so many people say this kernel or that kernel is the best or best on battery life when so many tweaks in X kernel add more performance at the cost of mah. I liked glados and its features a lot but it came at a cost too high. Touchwake is a really nice feature in it and i am surprised more people don't ask for it. Another kernel i liked was bamf paradigm but i am not using it. I would like to try that rom again in the future but it wasnt ready for me personally. Havent tried franco's at all. Just seems to be feature packed kernel but for what?
Sent from my GT-P3113 using XDA Premium HD app
I like francos so far works great with my favorite rom AOKP, buttery smooth, stable as hell, you can go battery saver or performance since you can OC/UV, etc, if you buy the App in play store it works great cuz he updates the kernel oftem and you can use either milestone versions or nihgtlies, and has the option for autodownload and autoflash the lastests updates.
You can change screen color values, as i said oc/uv, change the boot animation, and plenty other stuff..
Thats my 2 cents on your research
Edit: forgot to tell you, he also has a support mail , and if you have any issue kernel related he will answer with a solution if possible.. Report bugs etc
Sent from my Galaxy Nexus using xda premium
Sorry miss clicked and double posted
Sent from my Galaxy Nexus using xda premium
@rbiter said:
Jamesbond will likely give you best battery life and stability. He has a couple of other kernels with some performance boost. Glados was buggy as hell and some other things but that is for you to decide. Other kernels for me were kind of meh. I honestly dont understand how so many people say this kernel or that kernel is the best or best on battery life when so many tweaks in X kernel add more performance at the cost of mah. I liked glados and its features a lot but it came at a cost too high. Touchwake is a really nice feature in it and i am surprised more people don't ask for it. Another kernel i liked was bamf paradigm but i am not using it. I would like to try that rom again in the future but it wasnt ready for me personally. Havent tried franco's at all. Just seems to be feature packed kernel but for what?
Sent from my GT-P3113 using XDA Premium HD app
Click to expand...
Click to collapse
GLaDOS has been bug free for at least the last 5 revisions
blowtorch said:
GLaDOS has been bug free for at least the last 5 revisions
Click to expand...
Click to collapse
Really? Then where is all that code he thought unnecessary but needs to go back add in?
Sent from my GT-P3113 using xda premium
And the speaker crackling randomly or playing when it feels like it? Or the extremely slow refill ratemoccasiinally?
Sent from my GT-P3113 using xda premium
@rbiter said:
Really? Then where is all that code he thought unnecessary but needs to go back add in?
Sent from my GT-P3113 using xda premium
Click to expand...
Click to collapse
I really don't know what you are talking about there unless its the bluetooth drivers that were re-added a few builds ago?
@rbiter said:
And the speaker crackling randomly or playing when it feels like it? Or the extremely slow refill ratemoccasiinally?
Sent from my GT-P3113 using xda premium
Click to expand...
Click to collapse
never seen any of these problems ...
@rbiter said:
And the speaker crackling randomly or playing when it feels like it? Or the extremely slow refill ratemoccasiinally?
Sent from my GT-P3113 using xda premium
Click to expand...
Click to collapse
I've been using GlaDOS for the last couple days and haven't had any of these issues. Bluetooth is working perfectly, even over my car's hands-free setup which has been problematic with some kernels, and audio is working perfectly... maybe you were on an older build?
Anyone have any other info? I'm surprised nobody has said anything about faux or Trinity..
Well I guess I'll be the first to represent faux kernel over here. Like that its not over done and no special app is needed to control it and the gamma control from panda board he forward ported is pretty slick if you ask me
Sent from my Galaxy Nexus using xda premium
grivad said:
I've been using GlaDOS for the last couple days and haven't had any of these issues. Bluetooth is working perfectly, even over my car's hands-free setup which has been problematic with some kernels, and audio is working perfectly... maybe you were on an older build?
Anyone have any other info? I'm surprised nobody has said anything about faux or Trinity..
Click to expand...
Click to collapse
Trinity is legendary ... never got around to faux
I'm sticking with CM9 Kernel for now it's as good as the rest IMO plus they are integrating more and more into it ... missing touch wake though from GLaDOS, oh well
I'm mainly looking for battery life now. I don't really notice much difference between most of these kernels in terms of battery life. All of these kernels have good performance without overclocking.
I find that i bounce around from kernel to kernel and in the end when all is said and done no kernel is better than the other and it really comes down to preference.

[Q] Why are TW ROMs so much faster than AOSP ROMs?

I've been using Android for years now and I'm a huge Linux geek, but does the TouchWiz kernel really make that much of a performance improvement over an AOSP kernel, or is it other things also? When I first got my S4 I was amazed at how fast TW was out of the box, I stuck with it a few days and then went on to AOSP roms. I stayed on AOSP roms for about a week or two and things started to feel slower.
(before anyone flames me, I know benchmark scores don't mean a lot but they are a decent performance measurement) Just for the hell of it I ran Quadrant Advanced OC'd to 1.9 GHz and got a max of 7,000; I was having call quality issues to I decided to switch back to a TW rom, I was using either Wicked or Infamous S4 and while I had it loaded I ran Quadrant and got a whopping 12,700 which blew my mind! After the GE rom came out I was running that for about a week and was getting the same score. I didn't test it on the 4.3 leak though, which is apparently AOSP and not a stripped down TW rom.
So what is it about TW based roms that accounts for the huge difference in performance? Not only are my benchmark scores about 5,000-6,000 points higher, it also feels snappier while opening up programs and changing orientations. Are there a bunch of drivers/kernel modules that are missing or are hacked together in the AOSP roms/kernels that aren't nearly as good as the ones in the "official" roms?
Actually that is not true, I have seen some fast aosp roms out there, it is kernel related, experiment with a different kernel, you will see the results change.
brando56894 said:
So what is it about TW based roms that accounts for the huge difference in performance? Not only are my benchmark scores about 5,000-6,000 points higher, it also feels snappier while opening up programs and changing orientations. Are there a bunch of drivers/kernel modules that are missing or are hacked together in the AOSP roms/kernels that aren't nearly as good as the ones in the "official" roms?
Click to expand...
Click to collapse
I wouldn't say they're missing or hacked together, but Samsung has all the sources for their devices. Not just the kernel source, but also all the inner workings of the SoCs they're programming for. They have all the information needed to maximize the performance of the devices the make. AOSP roms don't have this luxury.
Think of it like graphics drivers in the Linux world. You can use nvidia's driver blobs (TW roms), or you can use F/OSS developed Nouveau drivers (AOSP).
TheAxman said:
Actually that is not true, I have seen some fast aosp roms out there, it is kernel related, experiment with a different kernel, you will see the results change.
Click to expand...
Click to collapse
I never said that it happened on all of the devices that I've had. In most cases the AOSP roms were almost always faster.
Toleraen said:
I wouldn't say they're missing or hacked together, but Samsung has all the sources for their devices. Not just the kernel source, but also all the inner workings of the SoCs they're programming for. They have all the information needed to maximize the performance of the devices the make. AOSP roms don't have this luxury.
Think of it like graphics drivers in the Linux world. You can use nvidia's driver blobs (TW roms), or you can use F/OSS developed Nouveau drivers (AOSP).
Click to expand...
Click to collapse
Yea I figured it was something like that. Thanks. Boo for closed source stuff
Just for fun I'm going to keep a running tally of quadrant benchmarks in here.
Score: 7762
Rom: RevoltJB v4.4 Stable
Kernel: Chronic Kernel 3.4.50 7/2
CPU: max 1.89 GHz performance governor
GPU: 504 performance governor
Score: 13191
Rom: Infamous S4 Google Edition v3
Kernel: Ktoonsez 3.4.0-KT-SGS4
CPU: max 1.998 GHz performance governor
GPU: 504 MHz performance governor
Quadrant scores mean absolutely nothing in terms of how fast a ROM/kernel is. You're basically using a random number generator to base your idea of speed on. TW ROMs are slow as hell when compared to AOSP.
task650 said:
Quadrant scores mean absolutely nothing in terms of how fast a ROM/kernel is. You're basically using a random number generator to base your idea of speed on. TW ROMs are slow as hell when compared to AOSP.
Click to expand...
Click to collapse
Bench marks aren't completely useless or else companies that review tech products wouldn't use them at all (I'm not speaking necessarily about Android). They do vary by a few hundred points but they do give you a ballpark range. Have you tried out the Google Edition rom yet? It's easy faster than any AOSP rom I've ever used.
Sent from my SGH-M919G using Tapatalk 4 Beta
I've been using the GE ROM since it leaked and my phone runs circles around my brothers TW galaxy s4. *shrugs
Sent from my GT-I9505G using xda app-developers app
fuego77 said:
I've been using the GE ROM since it leaked and my phone runs circles around my brothers TW galaxy s4. *shrugs
Sent from my GT-I9505G using xda app-developers app
Click to expand...
Click to collapse
I don't have another one to test against, but they feel equally fast to me.
AOSP and AOKP ROMS are by far much smoother. I believe its to do with the lower size of the OS, theres just much fewer processes, and not as much detailing in the menus which just creates smoother overall transitions and a good experience. My only crutch against them are that they heat my Galaxy S4 so much, and i don't know why it would be so, but on TW my device can idle in the 30's, heats to 40's/50's under medium-heavy load and goes up to about 65 when gaming for long periods of time.
On AOKP and AOSP in the same situations i wont ever idle below 50 degrees, moderate usage brings it to mid-high 60's and heavy usage it constantly throttles at 70, and when i disabled my throttle it heated up to 80 so quick that i got scared and quickly turned it back on. All these temps are in C.
I found on the Galaxy S3 that AOKP ran much cooler than it did on the S4, and its just the temps on those ROMS are what keeps me on Touchwiz as my daily driver. Its bad on the battery life and bad on the feel when your phone is warm no matter what you do, yet i love the whole neatness and smoothness of AOKP.
Monkz said:
AOSP and AOKP ROMS are by far much smoother
Click to expand...
Click to collapse
That's not what I've experienced on my S4. The Google Edition (which is TW based) runs circles around Carbon and RevoltJB, I haven't tried pure CM or AOKP yet though.
I*experimented the same problem concerning performance and high temperature on S4 on AOSP*roms.
I opened a issue on CM (CYAN-1768) and SlimRom (SlimRoms/device_samsung_jfltetmo/issues/2) issue tracker.
schumnana said:
I*experimented the same problem concerning performance and high temperature on S4 on AOSP*roms.
I opened a issue on CM (CYAN-1768) and SlimRom (SlimRoms/device_samsung_jfltetmo/issues/2) issue tracker.
Click to expand...
Click to collapse
Because people do not know that ODEXING a ROM optimizes it. Most members see "deodexed" on the title of the zip and believe it will be faster than odex version. *sigh*
But none of them are faster than the new LiquidSmooth rom it's blazing fast. I have used it on my S2 and S3 but this is the fastest aosp rom out easily.
Sent from my SGH-M919 using Tapatalk 2
I'm on tasks AOKP and its really fast. Every aosp ROM in general I have tried are faster.
I have never seen an aosp rom be "faster" than stock, and that's on all my phones. I used to like cm/aokp but they always have bugs, whether it's small or big, they always have bugs. On the S3 and on the S4 I have flashed aosp roms but always end up coming back to tw. Tw>aosp
Sent from Flip's Galaxy S4
richardlibeau said:
But none of them are faster than the new LiquidSmooth rom it's blazing fast. I have used it on my S2 and S3 but this is the fastest aosp rom out easily.
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
whytechapel_x said:
I'm on tasks AOKP and its really fast. Every aosp ROM in general I have tried are faster.
Click to expand...
Click to collapse
These are 2 very very fast roms... best aosp roms ive used. But, bottom line, samsung has stepped their game up and made tw work like a custom rom itself. Aside from the 600mb+ of stock bloat, this phone is perfect out if the box
Sent from my SGH-M919 using Tapatalk 2
DigitalUnderground said:
These are 2 very very fast roms... best aosp roms ive used. But, bottom line, samsung has stepped their game up and made tw work like a custom rom itself. Aside from the 600mb+ of stock bloat, this phone is perfect out if the box
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
Say what??? Perfect out of the box no way.. and the tw theme it comes with is terrible looking as well.
richardlibeau said:
Say what??? Perfect out of the box no way.. and the tw theme it comes with is terrible looking as well.
Click to expand...
Click to collapse
Lol ok
Sent from my SGH-M919 using Tapatalk 2
DigitalUnderground said:
Lol ok
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
I mean l love the phone how I have it now but I guess to each his own. TW just doesn't work for me. The best TW rom I have seen that is themed and looks gteat is DeathStar but that's just my opinion. Personally I have never kept a stock rom on any phone I have ever had because of the limitations with it and the usual stock bull that comes with it.
Sent from my SGH-M919 using Tapatalk 2
richardlibeau said:
I mean l love the phone how I have it now but I guess to each his own. TW just doesn't work for me. The best TW rom I have seen that is themed and looks gteat is DeathStar but that's just my opinion. Personally I have never kept a stock rom on any phone I have ever had because of the limitations with it and the usual stock bull that comes with it.
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I always use custom roms as well... usually the ones i cook myself (see sig) but I'm just saying that there aren't as many mods or whatnot to add to this phone because of how nice it is on stock. Like u said... to each his own.
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Overclock and undervolt kernel for CM Stable 10.1.3?

Hi,
Just got a used Epic 4g today and have a question for you seasoned vets.
I've decided to run CM 10.1.3 stable since it seems like a fairly solid, well supported ROM. Can any of you recommend a custom kernel to go along with it? I'd like to be able to play around with overclocking, undervolting, or even some more governors,
Thanks.
Honestly, I've had nothing but good experience using the kernel that ships with CM 10.1 (on two Epics used by two different people). I never felt like I needed to find a different one. What are you hoping to gain from a new kernel? Just curious...
hatchmt said:
Honestly, I've had nothing but good experience using the kernel that ships with CM 10.1 (on two Epics used by two different people). I never felt like I needed to find a different one. What are you hoping to gain from a new kernel? Just curious...
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With the stock kernel, I don't see any voltage adjustment options nor any overclocking options. I'd like to have those.
doom5 said:
With the stock kernel, I don't see any voltage adjustment options nor any overclocking options. I'd like to have those.
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Fair enough. Yeah, stock CM 10.1 only allows you to adjust the clock speed *down* (from what I can see in the performance menu). I'm afraid I'm no help with the custom kernel scene, so best of luck to you. I'll let someone else comment on that if they feel so inclined.
doom5 said:
With the stock kernel, I don't see any voltage adjustment options nor any overclocking options. I'd like to have those.
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Nitest/Nutest probably have those (look around in the dev forum). Do note that Epic 4G is an old device with decreasing support, so Nitest/Nutest is pretty much the only custom kernel for AOSP ROMs.
Sent from Samsung Captivate Glide @ I927UCLJ3
AndyYan said:
Nitest/Nutest probably have those (look around in the dev forum). Do note that Epic 4G is an old device with decreasing support, so Nitest/Nutest is pretty much the only custom kernel for AOSP ROMs.
Sent from Samsung Captivate Glide @ I927UCLJ3
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Thanks for your response. This device is old, but it has far better community support than my Droid Pro ever did.

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