yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 10.1 Android Development] danielsf:
Thank you AAccount for the under-volting, I probably sound stupid, but I do find it fun to see how low I can go. :D For my tab 10.1 I can seem to get 1.6ghz down to 1325mV perfectly stably, and my battery is about 5%. I have been running a really good cpu stress test and everything is great. For 1.6ghz I can under-volt by -50mV and for all the other frequencies I can under-volt by 75mV and everything seems great so far. I plan to check for instability over the next day and I will try to go a bit lower on some frequencies. Thanks again :)

Also, I would probably say the voltage cap at 1375mV is probably the best cap to have. But I would say the absolute max if you plan to increase it should be 1400mV. Also, I think you should probably leave the stock voltages as stock and leave it up to the user to mess around with voltages if they want to. That's my opinion anyway :)
[Galaxy Tab 10.1 Android Development] AAccount:
Hello everyone,

With school starting this Monday, I will no longer have time for working on this kernel at break neck speeds. It's sad to say but development will come to a near grinding halt but

not a full stop

. I will still try to patch issues and add features here and there, but releases will no longer come as frequent as they do now.

Hope everyone can understand.

AAccount
[Galaxy Tab 10.1 Android Development] bijixda:
great man.... flashed on stock ICS (3G)

no problem so far

lets try asphalt 7 :)

Is GPU OC enabled by default? Can not find it in SetCPU
[Galaxy Tab 10.1 Android Development] M@31:
First, thank you so much!

We need more people like.....for people like me who can't do this!

I just flashed JellyBeanRom v6 and it says that it has added A1 Kernel support.

I am running the p7510 (wifi) with that ROM......I thought that it would be included in the ROM, which I do not think it was.

What Kernel do I need to flash?

Thanks for your time and effort!

---------- Post added at 12:08 PM ---------- Previous post was at 12:04 PM ----------

So, I am dumb....it has indeed come with A1 Kernel.

My real question is how to I choose the OC.

Do I need to install a 3rd party app? I assume that I need to install Voodoo sound app as well in order to get things going, correct?
[Galaxy Tab 10.1 Android Development] AAccount:
You can user system tuner--> choose cpu --> set maximum to whatever you feel like. System tuner also does UV. Look under voltages.
[Galaxy Tab 10.1 Android Development] AAccount:
Yes, GPU OC is enabled by default forever since V1.3. Actually, there is no way to turn it off.
[Galaxy Tab 10.1 Android Development] M@31:
If I want to get the most out of your Kernel, System Tuner is the best?

What other apps would you recommend?
[Galaxy Tab 10.1 Android Development] AAccount:
System tuner does everything i need. I guess you can try setcpu. Dont use voltage control. It pairs the voltages and frequencies incorrectly. Of course, don't forget to download voodoo control. That feature was available since V1.0!
[Galaxy Tab 10.1 Android Development] M@31:
I dont mess with the voltages anytime...never have and never will.............I don't think :)

Thanks so much for this, really appreciate it!
[Galaxy Tab 10.1 Android Development] AAccount:
Lowering them with system tuner is safe. The worse you can do is make it too low and then it freezes. Forced reboot solves it. UV is reset at boot anyways (like all sysfs variables I've messed with). I just manually apply my custom voltages after every boot. (I don't enable auto set).
[Galaxy Tab 10.1 Android Development] M@31:
Any tips for some safe UV?

Of course, battery saving is great.......But want to keep performance.
[Galaxy Tab 10.1 Android Development] Tistitus:
What governor and scheduler pairing do you recommend?

Thank you!
[Galaxy Tab 10.1 Android Development] ox_eye:
Hi all,

someone told me that I have to flash the ICS-StockROM A1Kernel2.2 from this thread. But I cant find the file in this thread. I only find the V1.7. Can someone help me?
[Galaxy Tab 10.1 Android Development] trunks986:
system tuner won't work to me.... it always stays at maximum frequencies.... never happened before
[Galaxy Tab 10.1 Android Development] scoffyburito:
Hi there love your kernel, I've been running it at 1.6ghz for days on 2.2.2 but now updating to 1.7 has made my tab freeze and dim the screen within a minute of boot. The only thing else that has changed is my battery. Its always been above 60% but now its on 4% and Ive tryed going to an older version but that is still not working.
[Galaxy Tab 10.1 Android Development] M@31:
Is there a reason my wifi would be slower with this Kernel?
[Galaxy Tab 10.1 Android Development] fusionjack:
I dont think that our tab needs UV. Our tab can perform 9-10 hours screen-on. I do UV on my galaxy s2 with 16 steps freqs. It is really really hard to find a stable voltage for each freq for your device. Every device behaves different for UV.

With UV on our tab maybe we only gain 1 hour more. It is not much for tab and we need to deal with instability until stable voltages found.

Just my two cents...
[Galaxy Tab 10.1 Android Development] M@31:
Much appreciated! I would thank you, but I blew my load earlier today.....Im sorry.

If I remember, Ill get it to you tomorrow!
[Galaxy Tab 10.1 Android Development] jaswinky:
+1

---------- Post added at 03:49 PM ---------- Previous post was at 03:43 PM ----------

You were bad advised. If you are new with this kernel and you have stock kernel or a different kernel, or you have a version equal or lower than 1.5.9 for this kernel, you can directly download 1.6.4 version (choose correctly 3G or wifi version for your model), because 1.7 is still beta. If you still have 2.x.x version, you must first download and flash stock kernel (choose correctly 3G or wifi version for your model), and then 1.6.4 version. All files are in first post.
[Galaxy Tab 10.1 Android Development] AAccount:
Undervolting was requested on the GT8.9 forum. I've never used it myself (this is the first time I'm playing with it). I left the older V1.6 up there in case UV isn't so hot.

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] danielsf:
AAcount do you think you could disable mmc_cap_erase please?
[Galaxy Tab 10.1 Android Development] lightman33:
any chance for this kernel to work with a JB ROM (AOSP for me) ?
[Galaxy Tab 10.1 Android Development] CazeW:
Re-read OP.
[Galaxy Tab 10.1 Android Development] jaswinky:
Read the changelog for 1.6.4 version...
[Galaxy Tab 10.1 Android Development] danielsf:
Thanks, sorry that was stupid of me. I read the OP frequently and I can't believe I have missed that, guess I am getting old or I need new glasses :P Thanks mate.
[Galaxy Tab 10.1 Android Development] georgesadam:
Hello

Thanks for the kernel a1 ..

I will try it as soon as i guarentee that it will fix the battery drainage from the italian stock kernel ..

I tried all solutions to fix this but still my battery on HC 3.2 was better

Thanks again

Sent from my GT-P7500
[Galaxy Tab 10.1 Android Development] im_on_fire:
Just to verify...the kernel linked in the 8.9 thread works for the 10.1?
[Galaxy Tab 10.1 Android Development] paua__:
Running Task650's ICS

What's Included:

Rooted with Supersu

Insecure Kernel

Fully Deodexed

Android 4.0.4 XXLPH Firmware

When i flash StockWifi.Zip the kernel doesnt change.

I mean, it flashes ok in cwm but kernel version is the same after reboot and values for cpu freq is the same as before (max 1000).

Is Task's rom not "stock" enough to use this kernel?
[Galaxy Tab 10.1 Android Development] Judgement5:
your flashing the samsung stock kernel the one you need is a1-p4-1.7-wifi
[Galaxy Tab 10.1 Android Development] wtgserpant:
where's preshoot's 09/01 cm9 build?

it seems preshoot removed the 09012012 build from his server ............. does any one still have it?
[Galaxy Tab 10.1 Android Development] jaswinky:
You should read what and how are you flashing something from the internet before do it. You don't need to read the full task, but just the first post carefully...

Enviado desde mi GT-P7510 usando Tapatalk 2
[Galaxy Tab 10.1 Android Development] daniel_fm:
I dont recall exactly why but he removed because it was causing trouble or so I recall, read his thread before you try, there coukd be risks if you dont.
[Galaxy Tab 10.1 Android Development] georgesadam:
Nice to see my tab going to deep sleep finally , ive been facing a high battery drainage from the stock ics kernel now i think its solved ..

But can someone plz tell me what is voodoo and how can i enter voodoo with kernel ? OR should i have a certain apk for that ?

Thanks a1 for the kernel :)

Sent from my GT-P7500
[Galaxy Tab 10.1 Android Development] dillfever:
Download it from the market..... For when you use headphones..
[Galaxy Tab 10.1 Android Development] AAccount:
Umm... NO!!! The A1 Kernel has been ported to the Galaxy Tab 8.9 which means it was modified to work on that device. Note that this means it will no longer work on the Galaxy Tab 10.1. That's why there's a version for the GT8.9 and GT10.1. They are NOT interchangeable. The source code linked will work if you apply it correctly on the GT10.1 and GT8.9.

Voodoo sound is a modification which is supposed to exponentially increase the recording and playback quality of music. If you use waverecoder to record whatever sound it is, you'll be amazed by the quality. This one I can tell.

As far as playback quality... I have a confession to make: I don't really notice a huge improvement. If you look through XDA you will find audiophiles that say it is like night and day, but to me it's more link sunrise and sunset. The control app for voodoo sound is here. My brain is just not programmed to tell the difference. (I think whatever difference I notice is probably placebo.)

PS: to everyone else: I've been so busy this week and didn't have time at all to work on the kernel. Thank you to everyone who downloads and uses my kernel.
[Galaxy Tab 10.1 Android Development] georgesadam:
Wow nice thing to try .. i will give it a try thanks again for your fast reply
[Galaxy Tab 10.1 Android Development] martin26765:
Im not sure if quality is increased but i know for sure that it raises up the max volume to the next level! I have a vmoda headphones and now its 100% louder thats for sure, also it sounds great!
[Galaxy Tab 10.1 Android Development] AAccount:
Take care of your hearing. Once you damage your inner ear it's not repairable. ;)

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] Bigzinewicz:
Which kernel to use for Task's ICS " the beginning" ROM?

Just looking to make sure I flash the correct kernel. Want to try this kernel out on my Galaxy Tab 10.1 Wifi only 32GB U.S.A. model. Running Task's ICS ROM " the beginning," if that is helpful at all. Thank you so much for the work your doing and any time it takes responding to noob questions like this.
[Galaxy Tab 10.1 Android Development] kishorsidu:
Just asking....can we use this with cm10 latest build.....?
[Galaxy Tab 10.1 Android Development] AAccount:
Read the first post cm notice.
[Galaxy Tab 10.1 Android Development] trunks986:
so we need to wait for a CM10's update from pershoot? am i right??
[Galaxy Tab 10.1 Android Development] hanspampel:
Yes your right.
[Galaxy Tab 10.1 Android Development] serosis:
Something that may or may not be happening to others; When hooking up to HDMI, Netflix videos will not go fullscreen, meaning the ICS system bar is visible on all videos I play on my TV through Netflix. I'm on stock ICS with the 1.7 wifi kernel.
[Galaxy Tab 10.1 Android Development] scaryshark:
Hi AAcount. I have to say your kernel is amazing! Especially the GPU over clock just makes some things noticibly faster.

One question though. I know quadrant scores don't mean anything (even though on stock HC I had a score of about 2200 & now it's 3300) but according to Quadrants standard little grapphy thing, their Galaxy tab 10.1 has a IO score in the range of 5000 whereas I only get 3000. Any idea why this is, is there potentially a faster io scheduler or are they just talking BS. In any case I love your work!
[Galaxy Tab 10.1 Android Development] Leviathan10000:
I updated kernel from previous version I've been using it for two days had table plugged into my laptop was transferring file when I finish i left it plugged into laptop when I heard it restart when I unplugged it I noticed it was frozen so I restarted by holding down power button when it restarted it froze again at the lock screen so I tried restarting in recovery and it wouldn't respond I left the tablet off for a while and tried again to get into recovery and I was able to and reverted back to a back up with previous kernel and the tablet is back to normal has anyone had a similar problem
[Galaxy Tab 10.1 Android Development] AAccount:
I don't have Netflix or an HDTV let alone HDMI so i can't test that. Sorry.

I also can't verify the mtp USB file transfer issue since mtp doesn't play well with Linux. I usually use FTP or adb push and those always work for me.

Wish I could be more helpful.

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] jaswinky:
Check io scheduler, changing it will give you different io scores. Cfq will give you very diffeent results than sio.

Enviado desde mi GT-P7510 usando Tapatalk 2
[Galaxy Tab 10.1 Android Development] Nash123:
Nice work AA :) I am new to your kernel, but it looks very good. One question. Which app should I use for gpu overclocking?
[Galaxy Tab 10.1 Android Development] scaryshark:
Im using no frills and it only gives me the option of noop, cfq and deadline. I've tried benchmarking by changing only one io scheduler at a time and they all give the same approximate results (cfq gives a tinnnny bit higher)

@Nash123

I'm pretty sure the GPU oc is built in. ie there is no need for any app
[Galaxy Tab 10.1 Android Development] chankarl:
Ok so i flash it back on a pure stock rom ,i have the 3g version ,so what version should i download? Stock 3g or A1 p4 1.7 3g?
[Galaxy Tab 10.1 Android Development] BeeGee_Tokyo:
Hello AAccount,

I try your kernel with my own ROM (Ganbarou GT-P7500). The latest version (not yet release) of the ROM is running fine on Pershoots latest 3.1 kernel. But when I flash you kernel I got stuck at the white "Samsung GALAXY Tab 10.1" logo. no more boot after that. Couldn't do a log yet, but do you have any idea where to start?

I flashed Stock 3G kernel than your A1-p4-1.7-3G kernel. When I revert to Pershoots kernel it boots just fine.
[Galaxy Tab 10.1 Android Development] AAccount:
Try using v1.6.4. I'm taking down v1.7 because of several stability complaints.
[Galaxy Tab 10.1 Android Development] kordellas:
I am on 1.5.9 Should I flash the stock kernel ( i am on stock rom ) before flashing 1.6.4 ?
[Galaxy Tab 10.1 Android Development] AAccount:
No.
[Galaxy Tab 10.1 Android Development] georgesadam:
Im on JellyBeanICS rom wich has your kernel but v2.2

should i install 1.6.4 over it ?

or its just fine ?
[Galaxy Tab 10.1 Android Development] jaswinky:
Your ROM is JellyBean 4.1.1 (CM10) or ICS 4.0.4? I supose ICS 4.0.4 if you are using fine A1 Kernel... no, you can not, you must slash stock ICS kernel first and then 1.6.4. Everything is explained in first post...
[Galaxy Tab 10.1 Android Development] BeeGee_Tokyo:
Not sure about the explanation:

a) I flash stock kernel and then immediately 1.6.4

or

b) I flash stock kernel, reboot, goto recovery again and flash 1.6.4

Are both ways the same or which one is the correct one?
[Galaxy Tab 10.1 Android Development] georgesadam:
I am using JellybeanICS rom by toldo not stock ics or cm10

and i didnt understand anything of what you said lol

i flash this kernel v1.6.4 directly through CWM if i already have a1 kernel v2.2 ???

is it ok to flash it over toldos ROM ?

And why did a1 did u remove the 1.7 kernel ?

and whats the difference between 1.6.4 and 2.2 ???
[Galaxy Tab 10.1 Android Development] jaswinky:
I think both ways are ok, but if you want to be sure, i did option b.

Regards,

Enviado desde mi GT-P7510 usando Tapatalk 2

---------- Post added at 06:58 PM ---------- Previous post was at 06:53 PM ----------

The answers to all your questions are in post #1 but anyway, you shouldn't have flashed this kernel to your rom except you were sure your toldo rom kernel is exactly the same as stock 4.0.4 ics oficial kernel... were you? You can see in the name for this thread that this kernel is only for stock ics and cm9 roms.

Enviado desde mi GT-P7510 usando Tapatalk 2
[Galaxy Tab 10.1 Android Development] AAccount:
Yes, just flash 1.6.4 over it. I realize the name "jellybean rom" can be ambiguous. That rom is an ICS rom based on samsung stock.

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] georgesadam:
Done , but what did you change from 1.7 to 1.6.4 ??
[Galaxy Tab 10.1 Android Development] AAccount:
Added voltage control. Up to you whether you want to play with it.
[Galaxy Tab 10.1 Android Development] AAccount:
Suggestions Please

This weekend I had a bit of time to work on the kernel and I tried something (but couldn't get working) that was suggested on the GT8.9 forum. Somebody suggested using the data partition to dual boot. I thought this would be neat. My attempt to try this did not work. Here is what I tried. Any suggestions on how to fix would be nice:

Create a folder called "secondaryrom" on /data

Inside /data/secondaryrom I extracted task ics's system folder to /data/secondaryrom/system

Created empty data and cache folders in /data/secondaryrom

Edit p3.init.rc in the ram disk to remove the old mount commands and mount /data as /maindata and symlink /maindata/secondaryrom/system as /system, /maindata/secondaryrom/data /data and so on for /cache

Unfortunately I got stuck on the GT10.1 screen. Any ideas or would this feature be much more complicated and I'm taking waaaaaaay too simple of an approach? Obviously, you would need to flash a different kernel to boot normally and from the data partition since the ram disks would be different.
[Galaxy Tab 10.1 Android Development] prasoeu168:
which one should i donwload for CM9 Nightly? thank before hand
[Galaxy Tab 10.1 Android Development] AAccount:
First, make sure your cm nightly supports the 3.1 kernel. Then, just download 1.7 wifi OR 3g depending on what model your tablet is.

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] moodloid:
After flashing this kernel, wifi doesnt work on P7500 (CM9)

any ideas how to fix it?
[Galaxy Tab 10.1 Android Development] hanspampel:
Did you flash the right one, for "CM9-3G"?

A1Kernel_CM9 (CM9 3G)
[Galaxy Tab 10.1 Android Development] moodloid:
Yeah :|
[Galaxy Tab 10.1 Android Development] hanspampel:
What Version of CM9 you are using. Afaik is there no CM9 Versions out there which is using the 3.11 Kernel. Maybe thats your solution.
[Galaxy Tab 10.1 Android Development] aelsharawi:
A good idea, why not create a new topic for it and attract more developers
[Galaxy Tab 10.1 Android Development] fusionjack:
@AAcount: Is CM9 kernel at the OP has mmc cap erase disabled? Thanks.
[Galaxy Tab 10.1 Android Development] AAccount:
Yes, all new releases include all previous features unless explicitly crossed out.

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] fusionjack:
No, what I meant is the stock CM9 kernel. But anyway, I just flash it. It is pershoot's CM9 build 09/01 one. I'm not sure if he has disabled mmc cap erase on this build.

The reason that I switch back the stock CM9 kernel is due to the charging problem while tab is off. Using your kernel 1.6.4 or 1.7, my tab won't charge. The green battery symbol doesn't show up, only a blank battery symbol and it seems stuck there. But by using stock CM9 kernel from the OP, the tab is charging while it is off.

I really want to use your kernel, but it is too risky if it has charging problem while tab is off. (At least on my tab with pershoot's CM9 build 09/01). Could you please take a look into it? I'm really appreciated it. Thanks.
[Galaxy Tab 10.1 Android Development] scaryshark:
OK sorry to confuse things but I'm using a 3g AOSP (non cm) rom on my wifi! What do I use :D

Edit

No worries a1 1.7 cm wifi works great!

Edit 2

No wait it didn't do anything. Still on cm kernel
[Galaxy Tab 10.1 Android Development] AAccount:
Didnt do anything? I've flashed A1 on cm9 many times and it's always flashed. Usually test builds that crap out before releasing a new version. I use twrp.

Sent from my GT-P7510
[Galaxy Tab 10.1 Android Development] scaryshark:
Alright, I'll try TWRP I'm on CWM right now. Also, I'm using CM10 does that make a difference (and yes its a 3.1 kernel one).
[Galaxy Tab 10.1 Android Development] AAccount:
Which cm10 is that? Link?

Sent from my GT-I9300
[Galaxy Tab 10.1 Android Development] ThehypnooToad:
Hey there guys just wondering for advice or if anyone is encountering the same bug, on official ics with the 1.7 wifi and getting random freezes which i have to reboot the tab. This has ocooured on a few of the versions tried wiping cache and dalvik cache still same....

Thanks Dev really appreciate your work btw :laugh:
[Galaxy Tab 10.1 Android Development] scaryshark:
Check your PM ;)
[Galaxy Tab 10.1 Android Development] fusionjack:
It was isimobile build with pershoot's 3.1 kernel. He pulled that off because of audio problem.
[Galaxy Tab 10.1 Android Development] AAccount:
Any specific conditions? Need to be able to reproduce the same conditions to check it out.
[Galaxy Tab 10.1 Android Development] luke05dee:
Hi, have you had any more chance to look at the gpu clock speed please? As I was just browsing http://xdaforums.com/showthread.php?t=895825, and clemsyn managed to overclock it to 425000. Maybe you could ask him how he did it. Also he said on the tegra 3 nexus 7 forum he manged to get the tegra 2 gpu all the way up to 600mhz although it was highly unstable that high, maybe it is worth PM'ing him to ask how he did it? Thanks again for this kernel, it is working great :)
[Galaxy Tab 10.1 Android Development] fusionjack:
AAccount, could you please take a look into charging problem?
[Galaxy Tab 10.1 Android Development] AAccount:
Weird thing is that it worked perfectly on stock ics and with the identical kernel it has problems on cm9. I compared lpm.rc in cm9 and stock ics and they are the same. I also tried removing playlpm in hopes that it would just charge with a blank screen but for some reason, it fired up the logo. I also tried taking playlpm from my sgs3 with the same result.

Maybe ill try again tonight. I actually have a bit of time to work on the kernel :)

----------------------------Added-----------------------------

Are you using cyanogenmod by any chance?

--------------------------Added again--------------------------

I found the fix, which unfortunately, causes a bug in stock roms. I looked at pershoot's code and changed the charging boot mode. In stock roms samsung's suggestion is batt_lp_charging, while pershoot's is charging_mode_booting. In stock roms, pershoot's suggestion causes the tablet to boot when plugged in without touchscreen drivers. Either way, somebody's going to have to charge with the tablet turned on but the screen off. Either CM users or stock users. This change will probably be applied to future kernels since I'm a CM user.

What do you guys think?

Sent from my GT-P7510
[Galaxy Tab 10.1 Android Development] jaswinky:
I have no problem with charging in stock rom lph...

Enviado desde mi GT-P7510 usando Tapatalk 2
[Galaxy Tab 10.1 Android Development] Benzoman:
Is it going to affect all ROMs based on stock? I have no issues right now using toldos rooted stock ics. I'd really rather not switch to cm.

Maybe make a kernel for both such as you do now, or am I misunderstanding the issue?
[Galaxy Tab 10.1 Android Development] fusionjack:
Thanks for looking into it! I vote for CM! :D

My suggestion is for the time being you could release 2 versions. Currently there is no custom kernel for CM9 with 3.1 kernel. It's your call, but I want really use your kernel again. :)
[Galaxy Tab 10.1 Android Development] Benzoman:
I agree there should be two versions, but since the Dev is using CM, I would understand if that's the only way it goes.