yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] ironmaskusa:
Re: [NEW OK - KERNEL ] DhollmenCM for P51xx Cyanogenmod 10.1

Well I've been running it for few hours on latest 030913 CM10 nightly p5113 device and seems okay for me so far. I even used groove ip and chrome at same time..

I will keep at it and watch my battery today as well.. I'm happy so far.. Part of me is willing to see this kernel have even a 1600 max setting if possible but I'm by far the expert on knowing what this nice tablet can handle. I got it off amazon refurbished for 260 and has done everything I wanted to do... I'm not really a tablet gamer though. :P

Just wanted to also thank the development team for all their time and devotion to bringing us our best bang for the buck.. Furthermore, I think after I got it this tablet had only ran the stock rom for approximately 2 hours and was rooted and cwm recovery was flashed and my nightly was driving it! :P
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] muoino:
where to type the 'echo' command? I tried with Terminal Emulator and applied the command successfully but when I look into the file (by File Mananger of CM10.1) it still shows the default value (1200000 for CPU & 1 for GPU)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] clutz2000:
I have read thru the other posts (probably missing it) but I am not able to get this to go past the boot screen. I have a tab 2 10.1 running the latest CM10.1 (4.2.2) nightly. I restore from a backup that I just made and all is good, but would really like to run a different kernel to help speed things up as it seems laggy to me.

I tried a couple different times. I even let it sit about 10 minutes one time to see if I just needed to allow more time and quite being impatient

Did I miss something about incompatibility with that rom?
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
I'm now with nightly-2012.03.09. My tests are good for now.

I will upload the normal kernel in a while. I hope this will be an stable version fror a while.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
The normal version can't rise about 1200 Mhz. You can't really change much in it.

In HOT version:

echo 0 > /sys/devices/system/cpu/cpu0/cpufreq/gpu_oc change GPU oc at 307 MHz.

echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/gpu_oc change GPU oc at 384 MHz.

echo 2 > /sys/devices/system/cpu/cpu0/cpufreq/gpu_oc change GPU oc at 512 MHz.

You can see dmesg after echo.

In terms of CPU, you can see the possible values with: cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

and you can set the desired value with echo xxxxxxx > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq.

I think, this is not necessary since the governor scale, CPU frequencies, up and down when needed.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
However much we want to acelerate the CPU. the rest of the system will not be up to par.

When we talk about lag, we forget that from a certain optimization are brake disk and RAM. So the real improvement is not proportional to the increase in overclock.

This tablet is really stable at 384 MHz. for GPU and 1420 MHz for CPU.

The rest of optimizations should be done in OP system software, where there are much room for improvement.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] ketut.kumajaya:
I'm afraid your kernel does not lock the CPU frequency at scaling_max_freq per user set because CM 10.1 Power HAL will always try to set the frequency to the maximum value of scaling_available_frequencies. This is a known issue and has been resolved in blackhawk kernel by replacing CM 10.1 Power HAL taken from stock ROM.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] aquarist:
İ tested new 20120310 - 2 kernel, antutu score down 7707 :( and little laggy. İs that normal ? Old normal kernel more smooth.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] ketut.kumajaya:
OMAP4 platform has inbuilt protection: slow down the clock when the CPU too hot. And please remember, both CPU and GPU on a single chip.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Antutu lie far from one test to another.

I always do test three times and get the average.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Despite the protection, I mean rather that the performance increase is not proportional to overclock, battery comsuption and temperature increase.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] aquarist:
İ tested 3 times antutu score is max 7860 :)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
I know. I suppose this working well. Have you feedbak about?

For now, I hope the feedback from users. My normal version scale to 1200 MHz, the HOT version scale to 1480 MHz.:fingers-crossed:

Was not in my plans make oc version. In fact, this history began as a particular job, untill I came to share.

I take this opportunity to thank for your attention.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
I've thinking and I decided to try it. This library is /system/lib/libpower.so. I've replaced it with Samsung's stock.

Testing with both versions, I find no significant diferences in /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state:

the governor scales to high of scaling_available_frequencies when he needs.

Surely there is something I'm doing wrong. :confused:

P.S. I've been reviewing Cyanogenmod's code and I see that this library is part of energy's framework, intended to limit battery's

consumption by limiting CPU's performance.

However, kernel's governors working with other approach: regulate the optimal CPU's operation.

Therefore, I don't know if there is, really, something wrong in Cyanogenmod's code, unless they recognize this issue.

Finally, end users will have the last word.

P.S. Posibly YES, there are an issue in Cyanogenmod's code.

P.S. 2013.03.14. I must reconsider my previous comment. Perhaps it is not an issue from Cyanogenmod as they do not overclocks his kernel,

but nevertheless, this library throws unduly constant by raising the maximum rate every time he goes from a sleep state.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] ketut.kumajaya:
CM 10.1 Power HAL /system/lib/hw/power.piranha.so, but it will load /system/lib/hw/power.espresso.so if found, at least in P3100.

There's two unused CPU states, 1.35 and 1.42GHz:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] 19cam92:
No this kernel is only compatible with with AOSP ROM (CM10.1/CM10.2) not Stock Based

Sent from my Galaxy Tab 2 P5110
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
Dear [MENTION=5117218]tuxafgmur[/MENTION]

In the last kernel from august, I'm having worst performance than previous from July.

I'm on carbon 4.2

Performance seems to degrade after some time of use, specially with relative heavy (and not well coded) apps like tapatalk or chrome, taking sometimes even nearly 30 seconds to be running completely, and even then, slower than usual. Feels like memory bloated, but cleaning memory doesn't help. Reboot is needed to restore performance.

I thought it was just my feeling, but I've reverted to previous one, and it's performing better.

Not sure what exactly can be...
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Both last reviews are virtually identical as far as the kernel is concerned.

The major difference is the boot process and SElinux.

Moreover, the last revision includes new ducati-m3 firmaware.

Possibly with Android 4.2 we must use july revision.

However, I'm using August's revision with unofficial Carbon 4.3 and I have not problems.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
Perhaps is just 4.2, then...

Anyway, I'll check it a bit more, to be sure it's real or not!

Thanks!

Nexus⁴ / Cataclysm / Franco / Viper4Android

GT-p5110 / Carbón / DhollmenCM / Vper4Android
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Konsumhaus:
...than wie will Walt for unofficial carbon 4.3;)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] 19cam92:
[MENTION=5117218]tuxafgmur[/MENTION]

Would it be possible to add Xbox 360 controller support
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
I can look :)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] 19cam92:
Thanks mate :) :thumbup:

Sent from my POWER HOUSE Nexus 4
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] meistertom:
[MENTION=5117218]tuxafgmur[/MENTION]

Thanks a bunch for the great kernel anyway it seems, I'm having a small issue with the latest version. I'm getting an FC on "systemsettings -> security". For the record, currently I have SlimBean v8 o my tab running. It would be great if you could have a look on this. Meanwhile back to July version :)

Thx
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] voidstab:
Might give crossbreeder a try. I've noticed while waiting for the crossbreeder dev to transition to 4.3 that the tab with prolonged use does seemingly slow down. I'm not sure I could tolerate this tab without this kernel, and crossbreeder adds a bit more zing.

4.2 with this kernel and crossbreeder really was superb, been tempted to reload a bad nandroid.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
Interesting!

Haven't heard about it previously. I'll give it a try!

Thanks

Nexus⁴ / Cataclysm / Franco / Viper4Android

GT-p5110 / Carbón / DhollmenCM / Vper4Android
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] voidstab:
auto-correct fail?

I meant an old nandroid...
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] androider13579:
Works on the cm10.2 :)

Keep up the good work
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Of course, it works like a charm :good:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] mrlollog:
I really like this kernel, but i am too silly to find the right download link for P5110 cm10.2 :crying:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] freinet:
In OP take this:

Download last version here --> http://xdaforums.com/attachment.php?attachmentid=2213503&d=1377469319

It is for 10.1 and 10.2.

freinet
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] elcocolo50:
This kernel not work in stock jb 4.2.2.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Segamalaga:
Nobody said nothing about it. If you read OP it said "Jelly Bean 4.3.0 / 4.2.2 - CyanogenMod and another AOSP compatible"

It's well known it doesn't works on stock roms
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] elcocolo50:
Thanks but for any reason my tab stock on firs boot screen for long time.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] sharonbw:
You are gonna have to reinstall your stock Rom. This kernel won't boot your stock so you need to revert. Hopefully you have a nandroid but if not wipe and start over.

Sent from my GT-p511x
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Rataplan626:
+1 here on cm10.1 latest stable. Moving back to july kernel too.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Konsumhaus:
Could we expect a newer Kernel VERSION SOON?
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Yes, I'm check new improvements.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] saali:
Doest it support exFAT or will it support in upcoming version? Thanks a lot anyway, work smoothly! Great job!
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Yes, in check list OK
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Question

Hi,Tuxafgmur,

I wanted to ask whether I can revert myself back to stock kernel by just flashing the stock rom using ODIN or have to do some big process or whether it cannot be done????I am using GT-P5100 with cm 10.1.2 ...Also please explain me how your kernel works to give you a better performance and battery life as compared to stock Kernel of samsung..

I have flashed the zip file which you provided for the kernel through TWRP.The kernel version shows the DhollmenCM name and details.Is it right the way I have flashed?????I also wiped dalvik/cache after flashing the kernel.But I didnt see any new bootanimation of the kernel,like many kernel always have,it was cyanogenmod animation only.How can I see the improvemnts ,like some of the things which would prove ,the performance has improved......etc....

Please guide me.....developer

Another thing,which I would like to tell you is , as compared to 10.1.2 ,CM 10.1.3 is not fast and snappy and has problems in multiuser Profile with features like settings app and privacy guard.I tried to pull a logcat ,but always my device is showing in offline mode. So now I have reverted Back to CM 10.1.2 and I feel its much smoother and does not have any problems on multiuser profile,quite smooth in multi user too.....How should I put up my problem on Cyanogenmod JIRA Bugtracker.They wont accept without logcat.PLESE HELP REGARDING LOGCAT ALSO Developer....

Please guide me regarding my questions.....

Thanks for the great work Developer.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
Bootanimation depends of ROMs, not kernel. No kernel changes it.

You will feel the kernel improvement in fluidity and battery use. And the possibility of tweaking it.

You can change to stock ROM through recovery (or ODIN) just through wipe and flash, exactly as any other ROM. If you want to go into completely stock (closed bootloader, no root, reset counter), there's a thread explaining how to do, search for it.

CM questions, in CM thread. Each dev cares about it's work! ;)

Nexus 4 / Cataclysm / Franco / V4A
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Problem

Hi developer,

I wanted to tell you that after I installed you r kernel zip file and wiped dalvik and cache and after that the settings/security would result in force close of settings....So I am not able to access security section for any purpose at all....My device is TAB 2 10.1 with CM 10.1.2.....So I have returned to stock.....Please tell me a fix.....
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
This issue have a simple solution:

You must download and install previous DhollmenCM july version.

This kernel is the same as august version for CM 10.1.2. :good:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Question

Thank you for the reply developer,but the august version has new features which you have put in your post (changelog)..Will I get those features in july version too......Will this solve my problem also......please clarify my doubt????
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
August version basically updates kernel for 4.3 android (cm 10.2). But does not perform so well in 4.2 (cm 10.1.x).

Use previous build. Works great, and you'll miss nothing!

Nexus⁴ / Cataclysm / Franco / Viper4Android

GT-p5110 / Dhollmen / Viper4Android
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
As says nachordez, august version is an adaptation for 4.3 and add some improvements for it.

Later CM 10.1 introduced an issue in settings security tab. :(

Don't worry, because with July version you don't miss anything while you are using CM 10.1. :)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Question

Thank you developers,

Its works great....Thanks a lot......

I had another question that,How come samsung kernel is not updated to v3.4 which is used in google nexus 4 but stock updates of android 4.2 is coming up without that....What I thought was,if the kernel is updated instead of just the android version.....We will have more snappiness and security and better overall experience????Am I right???? Why is that not happening developer and also you could develop a 3.0.39 version of the kernel and why not 3.2 or 3.4 for the device....?????Is it due to the processor......????

Please guide me regarding it....

Thanks....
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Kernel version is global. Refers to kernel for all possible devices, from a small TV to a Super-Mainframe.

Many of the changes included in each upstream version number does not affect, at all, our device. Therefore, this issue is not as significant as it seems.

In my case, I had to climb the 3.0.39 version that needed to update some internal fields to be compatible with one of my improvements. Others have made ​​changes, version numbers are higher, but it was not necessary to update the base number.

Kernel version is not related to Android version.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Problem

Hi developer,

I have a problem in my tablet that the other end cannot hear what i speak from my tab when i call them but I am able to hear the other side..I tries heaphones ,speaker etc....i am only able to hear the other side whereas they cannot hear me....My device is GT-P5100.....Can you help......How come this problem must have arised..All songs played,videos etc are crystal clear through my headphones on my tab and even the other persons voice can be heard,but my voice is not heard.....Its running cm 10.1.2 and u r kernel july 22 version...

Please help developer.....
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
That seems to me more probably a ROM problem than a Kernel one. Ask in cm's thread.

Nexus 4 / Cataclysm / Franco / V4A
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
First: You must check CM stock Rom with CM stock Kernel.

Second: If your problem not solved, you must try with CLEAN CM install.

Third: Please, tell us what happened

:confused:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Another problem

Thank you developer,

I will surely tell you after I follow your instructions.But before that, I am trying to pull a logcat as mentioned in cm wiki for bugtracker but not able to do it...when I do it ,it shows "unable to open log device /dev/log/main no such file or directory" ......How am I supposed to correct it.....

Also when I give the filename in place of -f like -media ,it also shows unknown option....

I used the following command after enabling superuser through terminal

"logcat -d -media /sdcard/logcat.log *:v" as mentioned in CM wiki for logcat through terminal emulator on device.

and then it either shows the first problem or the second one that I mentioned...please help....I want to learn.....(GT-P5100, CM10.1.2, DhollmenCM july 22)
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
To do a logcat with DhollmenCM kernel, first, you must load logger.ko module:

insmod /system/lib/modules/logger.ko
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Maintenance relase 20131026 uploaded

Best release for Cyanogen Mod 10.1.x is 20130722
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] venividivici87:
Thanks tux!

U said "maintenance release"... Is it a minor update of previous version? I see in the changelog "new framework".. Not a little thing.. Are u working on deeper changes of kernel?

Inviato dal mio Galaxy Nexus utilizzando Tapatalk
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Konsumhaus:
Did someone tested the New release oft Dholmen kernel 20131026 with an 4.2.2 Rom?

I'm still in my way with the last unofficial carbon Rom by sevenup30 with Dholmen kernel 20130806 and it works fine.

Should i stay vor change to the new one?

Gesendet von meinem GT-p5110 mit Tapatalk
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nachordez:
[MENTION=5097855]Konsumhaus[/MENTION]

As Op says, the recommended for cm 10.1.x (and other 4.2 Android roms) is the one from July.

Stay

Nexus⁴ / Cataclysm / Franco / Viper4Android

GT-p5110 / Dhollmen / Viper4Android
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
Maybe you can try july version.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Cataulin:
This kernel clocks like a dream.

Quick question though. How do I OC the gpu on my GT-P5113? I've tried using the Antutu CPU master and No Frills but I don't see the option.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nilkar08:
Is this compatible with the latest nightly of CM 10.2?
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Cataulin:
Yes it is. I'm using it quite successfully right now.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nilkar08:
Thank you for the info. I will try it now.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nilkar08:
I confirm that it is working with CM 10.2 nightly dated October 29.

Great work!
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Raghavender:
Slowing down

Hi developer,

I have noticed over the time that,slowly my system is slowing down after I have installed the kernel.....the widgets are taking time to load, the apps stuck in between many times......some times go into not responding and I can feel the experience getting less smooth and less snappy since the first time I installed it....why is this happening .Is it Due to the lack of TRIM functionality which is present in Android 4.3 and not it 4.2.2....I am unsure whether its due to kernel or CM..... but I would like to have guidance from experienced guy like you who is well versed in these.....Also I use only premium apps from google, then apps like flipboard etc...no non optimised apps or non updated apps.....please guide me....I am using a TAB 2 P5100-CM 10.1.2 with DhollCM kernel July 22....

Also possible solutions on this developer...???
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] voidstab:
Doubtful if your issues have anything to do with the kernel, but you could try reflashing your CM rom and return to the stock kernel, I would bet it would be slower due to the lack of optimizations specific to this device. Remember to make a nandroid first should something go wrong.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Cataulin:
Guys,

what are you using to overclock?
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] petermunster:
The settings.... Power....
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] Mystique:
I would look at the low memory killer settings as well as the swappiness..

You could get (I think it's called Performance Settings, it's an xda only application.. Not found in the market..)

And mess with that..

Minfree is another name for low memory killer..

http://xdaforums.com/showthread.php?p=44522561

That's the app..
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
In my humble opinion you are wrong with this application since it can only hinder the work of this kernel.

All, or nearly all, the things this app could make for you already been resolved for me.

However, I appreciate your interest :highfive:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] kbal:
Sooooooo, been playing Dead Trigger 2 with Ultra Graphic hack, and the game is running just perfect (well, water running on screen effect is a little strange), much better than some nexus 7 gameplays on Youtube.

Damn you tuxafgmur, because of you I have no excuse to replace my p5110 :laugh:

CPU @ 1350

GPU @ 512 (set with Trickster Mod, but I'm not sure if it's actually OCed :confused: )

Latest CM 10.2 nightly

Dhollmen-P51xx-Kernel_20131026

PS: Thank you!

EDIT: GPU OC is working, Score went from 4800+ to 5800+ in SnowCold Benchmark.
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nielowen:
After flashing the CM10.2 from 05/11 I kept getting the "process com.android.ph PO ne has stopped" error with this kernel. Reflashing with just the stock CM10.2 kernel and all is running well. I know from a similar issue with my i9305 that other kernels have also suffered from recent CyanogenMod changes. Has anyone else experienced this issue on a P5110? Are there any plans to tweak this kernel?
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] tuxafgmur:
May be you are flashing old kernel? :confused:
[Galaxy Tab 2 (Unified 7" + 10.1") Android Developm] nielowen:
You're correct, I've just checked. Sorry about that.