yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
That sounds really cool :)! Just push the max out of this tab even when its possible to reach 1.8Ghz haha (I know that will never happen), yeah as even said it would be great for oc the GPU it lags like hell on Clash of Clans. I'm free to help ya guys, got much time for tests, ideas etc.

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
Actually 1.8ghz does not seem imoossible but i will be a make or break moment lol but i am very confident to see 1.7 in the near future. Oh and for the gpu oc i could do that but one thing i would like is gpu control. The soc in this tab has gpu options for 2d,3d and even the vpu in drivers/clk/mmp/ w.e and its hard to see what controls those individual things and once i figure it out i will immediantly tell u guys lol
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Nice that you are working so hard on it, lets defeat the S400 together :D Is it possible that the cpu cores get offline when it's not needed? All 4 cores are always online and that takes battery and makes heat, there is another "problem" too, the cpu just use the most time the max freq even when you just touch the screen the cpu jumps to max freq. I hope there is something you can do.

Thanks

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[Galaxy Tab 4 Original Android Development] The_Anomalist:
What do u mean by s400 and I looked into that and there is an app called kernel tuner and u can disable cpu1-cpu3 if need be for now lol and as for jumping to max freq when touching the screen, I will have to look in to that.
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
S400 = Qualcomm Snapdragon 400 it is a SoC

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[Galaxy Tab 4 Original Android Development] Anonim47:
There is called "mpdecision" in Qualcomm SoC to make CPU core get on-off automaticaly depending on work loads. This is called CPU Hotplug module. SM-T230 is using Marvell SoC that are not have thats module in the kernel, maybe Intelli-plug driver is compatible with our SoC. The CPU Frequency jump into max freq when screen tapped, is because boost configuration in the governor, you can adjust it with Kernel configuration app like Trickscter Mod.

Can you make this kernel for SM-T231 [MENTION=6584695]CTXz[/MENTION]?

The kernel workwell, but the RIL not work, may be it because the ramdisk has different script. I can send you and boot.img from SM-T231 so you can replace the zImage and repack it. :D
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
I can change the ramdisk for ya that isn't a problem for me. I mean the same as you said, we need a hotplug, but mpdecision woudln't be possible because it is closed source, but maybe as you said intelli plug or alucard hotplug for example, thanks that you understood me :)

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[Galaxy Tab 4 Original Android Development] Anonim47:
This is my boot.img from SM-T231 ;)

http://1drv.ms/1Gb2PAK

I can't use the degas-mkbootimg tool as well, haha. Because in my other device, i've using AnyKernel :D
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
I didn't know that the Tab 4 doesn't have a normal boot.img, I don't have Linux installed (yet) so I can't do anything now sorry :(
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Although i am not [MENTION=721905]ctx[/MENTION] i do believe it would be quite easy to build a kernel for ur tab which is 3g i assume by reading the specs. I can duplicaate an oc kernel for u if u have a source i can use it otherwise i cant really provide help. I dont know much about radios so i dont want to tinker with it to much
[Galaxy Tab 4 Original Android Development] mkhtfld76:
Havent looked at this thread in a while but what a pleasant suprise . Im excited to hear about your kernel. Your work is appreciated. Im eager to try it out. As far as people reporting excessive heat,I havent noticed it on my device but I dont do heavy gaming and I dont know that I would notice with the case I have,lol. Anxious to give it a whirl ?
[Galaxy Tab 4 Original Android Development] The_Anomalist:
It runs good but this is not my kernel it is [MENTION=6584695]CTXz[/MENTION] 's. I have made a kernel for this device but as ive said earlier in the thread that i will not post a build until i add more freq steps otherwise it would be a stable but unstable build so i am waiting for that "perfect" kernel to just blow everyone away :)
[Galaxy Tab 4 Original Android Development] CTXz:
Once I am home I might give It a shot to port the features. Though I really can't test it so I need you to test it
[Galaxy Tab 4 Original Android Development] mike2nl:
[MENTION=6584695]CTXz[/MENTION]:

i have used your kernel v4.0 when i had flashed the Acheron Rom V1.7 from here.

Wow, stable, secure so far i can see, and fast. Thanks for your work CTZx...
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Sorry for beeing so late :( BUT there we go! :)

https://app.box.com/s/brruqrxk7ouqh1tlaurnm7fktjchry0q

This awesome kernel lastest 4.0 version for SM-T231, enjoy it guys, I hope it works and boots!

I got Linux installed now and I understood how it works now to unpack a boot.img on this device, so maybe I can "port" this kernel to the other versions of Tab 4 too just give me the boot.img and I'll see what I can do.

Edit: Porting this kernel to other Tab 4 versions don't work that easy because they got an other SoC, S400 (Snapdragon 400).

See ya
[Galaxy Tab 4 Original Android Development] CTXz:
Yes it uses the snapdragon. On the other hand SD chips are allot more custom ROM friendly.
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Yes I know my mobile has a Snapdragon 801, so by the way, any feedback for the boot.img, does it work?
[Galaxy Tab 4 Original Android Development] Omforck:
The Mediafire links arent working for me. And I really want to try this kernel.
[Galaxy Tab 4 Original Android Development] yuber26:
waiting soon new kernel proyect from you mate :highfive: 4.0 is amazing :D i hope you can make a great version when lollipop coming :fingers-crossed:
[Galaxy Tab 4 Original Android Development] CTXz:
Try this https://www.dropbox.com/s/klm1dcsxc09ns91/4.0.zip?dl=0
[Galaxy Tab 4 Original Android Development] Omforck:
Yes the download worked!! Thanks.
[Galaxy Tab 4 Original Android Development] g_ding84:
[MENTION=6584695]CTXz[/MENTION] - do you need a mirror? I have AHF, dev-host and Mega. I have plenty of room if you need. :D
[Galaxy Tab 4 Original Android Development] CTXz:
Hey thanks for asking but I already have a AFH account for a while now. Once I have the time I will do the mirrors. Though feel free to do my work XD
[Galaxy Tab 4 Original Android Development] SM-T231:
SM-T231 kernel Not work on my SM-T231 . My tablet stuck on samsung logo

Please fix it.
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Hmm, I only changed the ramdisk but maybe I can do something, I'll look into it. Maybe I did a mistake..

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[Galaxy Tab 4 Original Android Development] CTXz:
No offence my friend but "please fix it!" doesn't sound very right and could offend someone. I'm sure you didn't mean to offend [MENTION=4754591]TheFerhatKing[/MENTION] or me or whoever but maybe just saying it without such force would be better next time ;)

My bad I thought there was a exclamation mark behind the please fix it! :D
[Galaxy Tab 4 Original Android Development] staypuft1652:
Thanks!

Thanks [MENTION=6584695]CTXz[/MENTION]. :good: Noticible difference in responsiveness.
[Galaxy Tab 4 Original Android Development] Dark_Cristian:
Did this kernel works in a sm-t231? I see the [MENTION=6293001]SM-T231[/MENTION] post but did any fix it or any else try this kernel in that device?
[Galaxy Tab 4 Original Android Development] CTXz:
Hey. Currently the t231 version doesn't work but what I might do once I am athome is to port everything over to the t231 kernel. Now I am not sure if I have time for that since I am still busy working on a cm port for a other device
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Did one again, this kernel is the base, but used ramdisk from T231, don't know if I do something wrong but on another device I used this method to get a same kernel booting on CM, MIUI and Stock ROM and it worked. Good Luck guys, I'm not a kernel developer, I don't know what to do else if this doesn't work now.

Kernel for T231 (is a flashable zip, flash via custom recovery):

https://app.box.com/s/a3uj1d6uy29qt4f90xw6wklbi7xsxe3g
[Galaxy Tab 4 Original Android Development] Anonim47:
SM-T231 version doesn't work on my device :D

I can't access last_kmsg too
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Sorry my friend, had done everything I can do.

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[Galaxy Tab 4 Original Android Development] Dark_Cristian:
may be this can help http://xdaforums.com/showthread.php?t=1520508
[Galaxy Tab 4 Original Android Development] TheFerhatKing:
Thanks but I'm not the one that has to do this because I've got the SM-T230, for me the kernel boots normal.

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[Galaxy Tab 4 Original Android Development] scorpion26:
I have t230, i flash this kernel but sio and vr doesn't working.
[Galaxy Tab 4 Original Android Development] CTXz:
Yes this seems to be a issue for some people. I don't know why but this only happens on some models
[Galaxy Tab 4 Original Android Development] CTXz:
-deleted-
[Galaxy Tab 4 Original Android Development] CTXz:
I'm currently learning/studying c++. I hope it will help me allot with developing for ROMs and Kernels. And even though the kernel uses C, they say if you know c++ you know c. I can only recommend the book I use called C++ all in one for dummies 3rd gen. Even my grandparents could learn c++ with this book :D
[Galaxy Tab 4 Original Android Development] mike2nl:
CTXz:

It can be interesting to know the models serial number, place of production and date of build. There is an app that can help to get that information. Samsung phone info like that. Will take a look.
[Galaxy Tab 4 Original Android Development] Mayowa234:
I'm really loving this, I've noticed a noticeable performance increase on my smt230.. would really love d smt230 to reach its bottleneck, I mean more support on this project would be great... Thanks to all d developers..
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Sorry haven't been on the thread latley have had been moving and what not but I have actually been learning some interesting things of course with some help. I have tested 4 different kernel builds: 1st was stock 1182 2nd being 1286 3rd 1344 (Ctx's) 4 being 1482 and finally 5 at 1500. But there's is a problem, the CPU starts to bottleneck after oc ing past 1344 so oc ing the ram and bandwidth should do some help on that. Also there seems to be a limit on the 1_25g rail that seems to be really stubborn but I will def be focused partly on that. As far as GPU well it is very aggravating cuz when I change the code for it I seem to get no read on GPU when booting up meaning it says 0 instead of 782 (my oc attempt) but I am still not giving up on this I really want to see 1.8ghz CPU speed and 800 MHz on the gpu
[Galaxy Tab 4 Original Android Development] g_ding84:
[MENTION=6584695]CTXz[/MENTION] I updated the Kernels for SM-T230 and SM-T230NU - return to stock.....updated OD2 and OD1 respectively. :D

http://xdaforums.com/showthread.php?p=58109771
[Galaxy Tab 4 Original Android Development] CTXz:
Links are updated ;)
[Galaxy Tab 4 Original Android Development] CTXz:
If anyone of you has experience with porting I am glad to invite you to the CM 12.1 DEV thread. Any help is highly appreciated :good:

http://xdaforums.com/tab-4/general/dev-cm12-1-t230-nu-development-thread-t3190971
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Ive finally done it! Stable overclock to 1648! I also was able to add more freq steps, which is sweet and cpu will start up on performance (at least should) i will post the build tommorow!
[Galaxy Tab 4 Original Android Development] The_Anomalist:
OK so I have a few surprises but first, what features would u guys want added to the kernel? Of course I have a few bit maybe others that u guys might want or see on it. I will also be working on the cm11 and 12.1 once those are stable enough.

Also GPU is next on the list. I will be posting a build so stay tuned today lol. Expect bugs and what not, I've changed a lot and one of the weird thing is that the tablet would freeze without dvfs enabled,so I re-enabled it and it worked just fine also this is a build I made after work and I have another one right behind it with more freq steps and increased max clock to 1786 but this second build will need to be tested :)
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Here it is folks! first officially posted build. like ive said before it is still CTX's zipped file and it is a great possibility that it will freeze, just cuz it works on mine doesnt necessarily mean u wont lag or freeze.

https://www.mediafire.com/#ydoqiq77vtm18
[Galaxy Tab 4 Original Android Development] Dark_Cristian:
Can do a port to the sm-t231 please? . My tab is too laggy with some games May be OC can help
[Galaxy Tab 4 Original Android Development] The_Anomalist:
I'll look into . The sm t231 has 3g correct? If it does I would have to use the kernel source for your specific tablet cuz I don't really know to much on porting but since it has the same CPU it wouldn't be to bad to do,BTW if u can send me a link for the source I can possibly make a build within a couple of days. I still need to see if my kernel is stable that's y I posted . So if I were to do the same thing with ur tab then it would be kinda pointless cuz it would lag/freeze. :)

---------- Post added at 10:56 PM ---------- Previous post was at 10:21 PM ----------

new link

https://www.mediafire.com/folder/ydoqiq77vtm18//download
[Galaxy Tab 4 Original Android Development] doctazz:
Just tried it for a few minutes. My T230NU is stuck at the PIN screen after the boot animation with the new kernel. I'm running emoboy's Lollipop 5.0 rom, which is made to look like Lollipop, but is actually a modded T231 ROM on KitKat 4.4.2. Now back on 2.1 kernel.
[Galaxy Tab 4 Original Android Development] The_Anomalist:
Ya I figured it would. Its the memory bandwidth axi ,I'm figuring out why it won kick in to gear though?

Does it completely freeze or stay on the screen? Or reboot? If it don't reboot then that means it is indeed the memory bandwidth. Thanks for the feedback.