yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 4 Original Android Development] The_Anomalist:
What version is the ROM ur trying to install and u could also go back to stock then re root it and try installing the kernel again and remember to clear cache and dalvic
[Galaxy Tab 4 Original Android Development] johnnyb47:
I already had Acheron ROM version 2.1.1 installed and TWRP 3.0 when I attempted to install Prism Barebone version 4.0S and the 4.0 kernel modification (from the original post in this thread).

I also tried going back to stock, there is a link to the OD1 stock SM-T230NU kernel in the original post, I used that at first. Then I went to SamMobile.com and downloaded the latest PDA T230NUUEU0APA1 / CSC T230NUXAR0APA1 image for Cellular South (containing boot.img, system.img, etc.) from 2016-02-15. The behaviour remains the same, though, at every reinstall, namely I get the "optimizing apps" dialog that does its job for some apps, then the tab resets and continues optimization. After that process is done, all I get is the boot animation.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Just relfalsh stock ROM through Odin and then flash 4.0 zip once it's rooted again. There should be no reason y it's not booting
[Galaxy Tab 4 Original Android Development] johnnyb47:
Did that, the tab rebooted during the Odin flash. Now it won't even stay on in download mode.

Well, sh** happens, I guess. Thanks for the support, anyway :)
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Did u ever even make a backup of ur ROM?
[Galaxy Tab 4 Original Android Development] doctazz:
Works really well for me. I run it from 312-1586, using the interactive governor.

Looney Tunes Dash sounds and graphics are finally in sync, even when there are some dropped frames. I no longer need to use GLtools to reduce graphic quality, just to make LTD playable. Asphalt 8 surprisingly runs decent now at 1586. Even 720P video looks like it's handling a few extra frames without hiccups. No crashes so far that I can attribute to the kernel.

Keep it up! :)
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I'll be doing more builds later today and try to increase the clock further and also try adding a few more freq steps and I'm glad it doing what it should be doing finally lol
[Galaxy Tab 4 Original Android Development] johnnyb47:
Yep, before I first flashed Acheron. But now it doesn't stay on long enough in download mode (or any mode) to restore the original.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Let it's battery die then keep it off then charge it a lil bit then hurry up and put it into download mode
[Galaxy Tab 4 Original Android Development] johnnyb47:
I'll do that, thanks!
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Has anyone had any issues with this kernel crashing their device? I don't think mine is crashing because of this oc kernel, but I figured I would just ask you guys about it. I flashed this around a year ago and had issues with the speed sticking at full and not scaling, but I have since fixed that issue. Also I use Twrp to backup my rom, but IF I were to go back to the stock cpu speed kernel, would I loose all my app data and have to restore everything? Or would it be safe to just scale back the overclocked kernel CPU speed to factory?

I really appreciate this oc kernel and it has served me well for over a year. Thanks.

Btw I can stress test for 9+ hours with no problems.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Have u flashed ctx kernel or my version? Also I don't know if anyone has had any issues with my new build so far.
[Galaxy Tab 4 Original Android Development] trentenmarschel:
I flashed the original ctx version. I remember flashing a couple times because the first time it would not scale and would stick on full speed. I flashed a different version and it seemed to work well. I dont think the overclock kernel is causing the problem because it's worded well for a year. Would there be any specific log that would tell for certain if its an overclock issue.
[Galaxy Tab 4 Original Android Development] rascal9:
Flashable over stock ROM?

I rooted my sons tab using ODIN never messed with any ROMS or Kernels but its still dog slow after cleaning bloat and tweaking.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I'm not sure if there is I'm more on the lines of a builder (strictly) but I'm learning more everday so. But I'm sure there might be but I could be wrong also give my newest build a shot I heard it works great with games now since overclock was increased to 1586

---------- Post added at 08:44 PM ---------- Previous post was at 08:43 PM ----------

Yes you can flash over stock ROM that's what I do and I have no problems what so ever so flash away! Lol
[Galaxy Tab 4 Original Android Development] The_Anomalist:
YESSSSSS

I DID IT GPU FREQ NOW SHOWS UP IN DEVICE CONTROL!!!!!!!!!
[Galaxy Tab 4 Original Android Development] rascal9:
Very Nice! Where are you keeping updates posted?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I'm thinking about starting a new thread so everything will be fresh, updates and all
[Galaxy Tab 4 Original Android Development] rascal9:
What ROM you running this kernel on? (Device T230-NU (WIFI only no service provider)

I see three that are "Working" but not being updated or maintained regularly.

http://xdaforums.com/tab-4/development/rom-stock-t230-nu-acheron-rom-v1-0-2015-t3000107

http://xdaforums.com/tab-4/development/rom-t230-nu-4-4-2-t3137415

http://xdaforums.com/tab-4/development/rom-tranchidakat-v1-0-t3302042

No Longer Maintained:

http://xdaforums.com/tab-4/development/rom-prism-barebone-v1-t2991013

Last Update was Prism-Barebone-T230-NU-V4.0S.zip

http://xdaforums.com/showpost.php?p=60792762&postcount=206

Kernels:

http://xdaforums.com/showpost.php?p=65986722&postcount=270

http://xdaforums.com/tab-4/development/kernel-adamas-kernel-sm-t231-t3314256

Above is the list i have so far. And i have them all downloaded. This is my sons tab and he only plays games and uses a free text app we got him. So my question is what my best bare bones ROM is we really dont need anything installed but clash of clans and Google Play . he could care less about any google or Samsung apps.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
To be honest I never downloaded those roms I just use stock and used uninstall master or w.E. it was to delete bloatware but if u were to go that route I would suggest to back up ur current setup then just start uninstalling apps. Also it would be nice to get more feedback from other users so I know if anything is working on other roms or if my builds are stable and so far only one has given me feedback on my latest build..... Remember Feedback guys goes along ways
[Galaxy Tab 4 Original Android Development] trentenmarschel:
The rom I flashed was prism barebone. It mainly de-bloats the stock rom. There was a HUGE difference in the amount of memory the Prism rom saved me. It also runs so much faster. The link is

http://xdaforums.com/tab-4/development/rom-prism-barebone-v1-t2991013

---------- Post added at 12:11 PM ---------- Previous post was at 12:05 PM ----------

I don't have access to a computer for the time being last time I used oden to flash this kernel, but I plan on upgrading my microsd card from 32gb to a 64gb card. When i do that I may give your version a try. I don't know if I can flash a kernel with twrp recovery. Also I would have to restore all my apps with titanium backup.

---------- Post added at 12:14 PM ---------- Previous post was at 12:11 PM ----------

I can definitely vouch for Prism barebone latest version. Been using it over a year and it works great. I also have TWRP recovery flashed.

Here is a picture of the difference in size of the stock vs Prism Barebone rom.
[Galaxy Tab 4 Original Android Development] rascal9:
I noticed a huge size in ROMS as well.
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Lol, I like Prism mainly because it's a fresh start. Like when I install a fresh copy of Windows 7 on a custom computer. All you start with is a recycling bin icon. Prism is like that, you have to install what you want like Google games or email client.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
There's the feedback lol and u should be able to flash the kernel via recovery. And now I actually might try the bare bones ROM the size difference is huge! Need to install asphalt 8 lol
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Im installing it now to give it a try. Thats the problem with the stock rom, it uses so much internal memory that you cant install large apps even to move them to the sd.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
gpu overclocked to 832
[Galaxy Tab 4 Original Android Development] NeoMrtX:
Link pls for gpu overclocked kernel
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I will post a link as soon as it's stable but as of right now I can't because the 832 step is quite laggy which means I have to overclock RAM and axi and that right there can be a huge pain in the arse but as soon as I fix it I promise to release a build I said earlier in the thread that I would get things to show up then add freq steps and that is what I plan to do
[Galaxy Tab 4 Original Android Development] SilverLyricDragon:
So, I flashed the kernel. It worked fine, however, I soon came across an issue. This is probably my own doing. After flashing, I started up the tablet, everything was working fine as expected. However, after booting the tablet became unusable. Although I could use it, I had a constant slowdown, to the point where I couldn't use it. I restarted, only to my disappointment that it still had the issue. I then went back into recovery, and flashed my nandroid backup, which I'm using at this moment.

Details I can provide:

SM-T230NU

Rooted

Prism Barebone 3.5 (this may be the issue.)

If you need extra info, I will attempt my best to provide it.

(Also, this may be redundant. Sorry in advance if it is)
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Which kernel did you flash? This thread suffers from multiple kernel personality. Also give Prism v4.0 a try. Been using it over a year.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Try this one http://www.mediafire.com/download/dx...rdux2f/4.0.zip
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Your link shows invalid. What are you trying to link?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
It's a link to my latest build it is over clocked to 1.586 ghz

---------- Post added at 05:36 PM ---------- Previous post was at 05:36 PM ----------

It on page 27
[Galaxy Tab 4 Original Android Development] doctazz:
Switched to Prism 4.0 a few days ago. Also using beany23's 1586 kernel on it with no issues. Spent most of my evening yesterday reconfiguring my tab 4. Can't wait for the new kernel with GPU overclock! So, yeah, using Prism 4.0 with the current 1586 kernel is the best for the tab 4. Wish Al_Iraqi was still working on Prism, but that's as good as it can get on the OS end, as no one seems to be dev'ing anything beyond KitKat.

Beany23, even if you have to scale back the top speed for the GPU, it'd be awesome if you release something for us to test on more tab 4's. The 1586 really works great with Prism 4.0. I'm running it on interactive, as my tab 4 runs cooler that way overall. Al did a great job of getting rid of a ton of bloat, but keeping the right bunch of libraries and drivers on. Chrome runs better here than on my current daily phone, a newer LG G Stylo. Weird!
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Thats good that its stable now. As for the Prism, I am not sure there is much more to dev with it. It's just stock minus the junk. The ONLY negative thing I can say on the Prism build is that it didn't keep the required drivers and stuff to use the IR blaster for controlling tv and stuff. I'll let you guys test beany23's kernel a little bit more before I flash it.

You should try stability test stability test!

And some other stress test apps and let us know how it works.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Im happy to hear that the kernel works good thats a sign to increase a tad bit more ?. also I'm getting closer to the stability of the gpu I'm thinking of lowering the clock just a bit but we'll see.
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Have you guys had any issues with the cpu min frequency switching to max in the background? I know I had that problem for a little bit when I first flashed the original kernel. What are you using to manage the clock speed? I use rom toolbox pro as of now. I had conflicting issues with multiple apps that try to manage the cpu so I had to just use one.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I use kernel adituor and or device control. Both work great ROM toolbox in my experience has had issues with the settings actually sticking.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
more good news, we now also have the ir blaster!:D:D
[Galaxy Tab 4 Original Android Development] trentenmarschel:
Really, how and where?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
another build. overclock to 1690 min freq down to 156, gpu shows and ir blaster now works.

http://www.mediafire.com/download/qq8d4ma33q93a47/4.0.zip

---------- Post added at 08:29 PM ---------- Previous post was at 08:27 PM ----------

it was a file disabled in the config menu also new build up
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Nice work man! You're making the tablet to a beast :)

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
Thank u I'm trying lol and the cool thing is That I didn't even change the voltages or anything related to cpu.... The performance isn't tapering off so that tells me that we might in theory get oc up to at most 2.0 GHz! Also it's weird but I've noticed a graphical difference playing real racing 3 and it looks really good also I'm trying to get fast charge slapped on this baby but I'm not sure where to add the files lol. I wish more people where working on the kernel because now I can tell u exactly how to add things like I've noticed people stopping because of the gpu.... Now they don't have to!

---------- Post added at 02:05 PM ---------- Previous post was at 01:43 PM ----------

does anyone know if there is a rom that has ir blaster support? i just fixed that and now all that i look at dont have it no more lol
[Galaxy Tab 4 Original Android Development] trentenmarschel:
How and where is the config file located? Is there a way I can edit my current rom to show. Mainly the prism 4 doesnt acknowledge a ir sensor. Does it work on the Prism build?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
The config file is menu where u enable drivers/features on the kernel it the file used to build It. u can't do it through the tablet and no prism decided to take it out it works on the kernel side but not the ROM side so now we need a ROM that has that feature enabled on the ROM.
[Galaxy Tab 4 Original Android Development] trentenmarschel:
I can find the file. It was an app on stock rom but it didn't work because the rom wouldn't recognize an IR sensor.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Forgot to mention overclock now at 2002!!! Testing now for stability
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
I can offer to be a beta tester if you want ;)

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
Sounds good! I do have to tell u though that there's a huge gap in the frequencies

---------- Post added at 03:21 PM ---------- Previous post was at 03:16 PM ----------

here ya go http://www.mediafire.com/download/n4ohgg3sqgg4f6c/BeastKernelv2.zip
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Thank you dear friend.

Edit: It seems like the UI is lagging, its like the GPU is low clocked. If I activate the energy save mode, the max freq from the CPU does not change, it worked before, because it changed to 1066 when I activated it. But wow, 2 GHz crazy!

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
jederzeit Bruder

---------- Post added at 03:55 PM ---------- Previous post was at 03:44 PM ----------

thanks for the input ill try increasing the voltage a bit also it could be due to the fact that it jumps from 1066 straight to 2002

and also i have fequency steps from 1274,1378,1482,1586,1690,1794,1898 that dont show up which in return would also make it lag.

---------- Post added at 04:10 PM ---------- Previous post was at 03:55 PM ----------

do me a favor theferhatking go into device control and change the cpu governer to performance then ondemand then interactive and tell me if the cpu load drops to around 20% if it does then put it on powersave and tell me what it does
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
The load goes higher, just for some seconds, than go back to about 1-5%, on powersave it stays always on 2 GHz (it does go back, but it takes long time)

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
try this one raised voltages a bit.. http://www.mediafire.com/download/5ieb23pdm2d17n4/BeastKernelv3.zip

---------- Post added at 04:33 PM ---------- Previous post was at 04:31 PM ----------

looks like i have to make some adjustments to accomodate for the higher freqs also new build try it out
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Maybe because there are not steps, on enegry save mode it is not setting the max freq to 1066 MHz like I said. But I think even on stock kernel it is a laggy kernel on the ui, because when I'm in the homescreen and swipe left and right, it is not smooth. Hmmm

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
I have a hunch of what's going on. When I get back from painting my house I'll work on it some more. Keep in touch
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Nice to hear, see ya then.

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
i might have an explanation to y it sticks at max freq theres a feature that boost cpu speed when touching the screen (forgot the name of it:p) so maybe adding a intelliplug or something might help with that but im not sure
[Galaxy Tab 4 Original Android Development] NRav90:
Tested out the BeastKernelv3 . It loads and works fine, however whenever I use CPU intensive apps (DJI Go for my Phantom 3 4K), it stutters more and lags more than the prior kernel with 1344 mHz overclock (1 think that is what it was).

Hopefully this can become buttery smooth! Good job thus far
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Ya i still got a few things to change around
[Galaxy Tab 4 Original Android Development] NRav90:
I will certainly test out the next iteration!
[Galaxy Tab 4 Original Android Development] trentenmarschel:
U should get a good cpu monitor. When i had the cpu sticking issue, this helped a lot.

Perfmon

http://xdaforums.com/showthread.php?t=1933284

Also I had issues with multiple apps trying to adjust cpu.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
For now the best supporting app is device control. Other apps like trickster mod, ROM toolbox and kernel adituor don't really work the best with this tab. I'll be building another kernel adituor app soon. This kernel has come along ways and it's taking along time to get things where they are now. In the beginning I thought it wasn't possible to get things going the way I wanted them to but I did it. [MENTION=4623568]doctazz[/MENTION] said it wouldn't see 2.0 GHz but it did, the gpu overclock is now here, fast charge is on the way along with more schedulers and CPU governors it's just a matter off time also the 2 version 3's where for [MENTION=4754591]TheFerhatKing[/MENTION] to test.
[Galaxy Tab 4 Original Android Development] NRav90:
Do you suspect that performance will rival more powerful tabs once you get a stable kernel or is the CPU still going to be a bottleneck? As for GPU overclock - how much of an increase have you succeeded to get? I am looking forward to seeing this tab become a beast. best $75 I have spent yet.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Well considering that I didn't have to change the voltage tables when I overclocked the CPU to 1898 I think that the max clock would be around 2.2-2.3ghz which is insane for a tab that uses cortex a7's also once the CPU hits a bottleneck I will have to change the memory bandwidth and that right there my friend is a huge pain and I mean huge lol and as far as gpu overclock I was able to overclock it to 832 MHz but it hit a bottleneck so I'm going to have to change the axi and memory bandwidth to cope with the frequency right now I'm working on schedulers and CPU governors.
[Galaxy Tab 4 Original Android Development] NRav90:
I am anxious just reading this! Subscribed to thread and will test when new kernels become available. 2 words: AMAZING WORK.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Thank u I'm glad to hear that lol I will def be on it all day. Turns out my boss called me saying there's no work today so expect some builds today!
[Galaxy Tab 4 Original Android Development] NRav90:
Brilliant. Will test tonight when I am home from work... argh!
[Galaxy Tab 4 Original Android Development] doctazz:
Tested out the Beast Kernels. Both of them are too laggy in real world use for me, including games. Noticed lag in Looney Tunes Dash and Asphalt 8 with the Beasts, so I went back to the 1586 kernel, which is smoother overall. Video doesn't seem to be suffering with the Beasts, though, only the 3D apps.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Those two kernels were for the ferhatking to test they aren't for daily drivers lol but I have a build getting ready soon that has intellimand hotplugg along with some new governors I forked from engine95
[Galaxy Tab 4 Original Android Development] The_Anomalist:
When I get back from this estimate for irragtion I'll post a build. I'll be lowering the clock down to 1690 for now cuz it will take longer than expected to fix the lag issues so anyway clock down to 1690, inteliplug, and some new governors. BTW [MENTION=4754591]TheFerhatKing[/MENTION] I fixed the sticking issue with the max clock not lowering. inteliplug fixed that issue and touch boost works great for smoothening out the window transitions.
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Sounds good, this will be such a great kernel and your skills gonna be better and better in time ;)

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
Thanks and I know this will be one heck of a kernel
[Galaxy Tab 4 Original Android Development] NRav90:
Any luck beany?
[Galaxy Tab 4 Original Android Development] trentenmarschel:
This tablet i dont imagine is really good for extensive 3d use.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
It will be ;)
[Galaxy Tab 4 Original Android Development] NRav90:
hows the progress coming? Did you get the irrigation job?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Its going I'm still trying to figure out why it lags still and I'm gonna start releasing builds when there stable so I'll need some testers to help me out and if anyone one does PM me and I'll send u a link also yea I got it I get 5% if I get the job and it did! 1,000$ bonus! So I'm happy lol