yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] masprague:
What exactly is this feature???
[Nexus 7 Android Development] Flav106:
USB Audio is a feature which allow to use a DAC (Digital Audio Converter) with your device. The sound is processed by the external DAC which is far more performing than the internal chip.

You can find more information here : http://www.head-fi.org/t/595071/android-phones-and-usb-dacs
[Nexus 7 Android Development] theoctavist:
On paper yes, but being withing the ranges of audibility is another issue entirely. Expectation bias is a real bi*+h

Also. Head fi is OK for headphone reviews but they are not very scientific. More of an audiophile bent.

Anyway. Sorry to be ot
[Nexus 7 Android Development] cxw1219:
I too seem to have a non-existent usb audio functionality since the CM10.2/4.3 update....
[Nexus 7 Android Development] sireangelus:
could you provide a version WITHOUT selinux? Selinux si like 20% of performance wasted.. i'm asking since i've heard that you have the best OCed battery life.
[Nexus 7 Android Development] sireangelus:
just installed this marveous kernel.. a question.. why does it not keep the underclock settings, but after the screenlock it resets as 1,3ghz max?
[Nexus 7 Android Development] lilgiz:
Did you flash the no frequency power hal?
[Nexus 7 Android Development] sireangelus:
No, what is that.
[Nexus 7 Android Development] lilgiz:
I'm not sure of the technical details, but I believe the Power Hal has to do with the max frequency while the screen is off. In order for you to change frequencies in lean kernel, you need to flash his tweaked Power Hal for it to stick after a screen off. There should be 3 different versions in the download link in the OP. I use the no frequency one.
[Nexus 7 Android Development] poondog:
As the other member said, powerhal is responsible for setting the kernel settings (when it overrides yours)

Flash the no freq powerhal to stop it from changing freqs. The 1.5 powerhal makes the kernel set to 1.5GHz

If you've ever used a new qualcomm device its like mpdecision, it has a mind of its own
[Nexus 7 Android Development] gordonbennet:
Stupid question, but I want to install this over M-Kernel. Do I just flash this kernel and wipe cache/dalvik and it should be good. Sticking to stock freq most probably if that matters. Cheers
[Nexus 7 Android Development] poondog:
Yes that should be fine, as this kernel uses its own ramdisk

Wiping cache/dalvik is not required but it doesn't hurt too do it once in a while :P
[Nexus 7 Android Development] gordonbennet:
Thanks poondog.
[Nexus 7 Android Development] robgee789:
Is it possible to disable fsync on this kernel?
[Nexus 7 Android Development] Imoseyon:
Sorry no. If you see an unbiased benchmark showing how much difference fsync makes I'd love to see it... thanks
[Nexus 7 Android Development] robgee789:
here is the difference on my tf300 which is very similar in specs

the effect would be greater but the kernel i use on my tf300 is epic and so is the rom
[Nexus 7 Android Development] hanschke:
pleas a beta for cm10.2 nightly :D
[Nexus 7 Android Development] azoller1:
This works for cm10.2..
[Nexus 7 Android Development] hanschke:
latest nightly ramdisk changes and we got an update for maguro so I think we need a grouper update too
[Nexus 7 Android Development] adame09:
This kernel runs great with slimbean
[Nexus 7 Android Development] TheLastSidekick:
This is probably the best AOSP kernel currently out. It does work very well on SlimROM, but until the update comes I'm on M-Kernel which isn't too bad.
[Nexus 7 Android Development] azoller1:
V2.3 is up, should now work on cm10.2 nightlies
[Nexus 7 Android Development] Imoseyon:
thanks for updating the thread, azoller1.

https://github.com/imoseyon/leanKernel-grouper/wiki/jb-mr2-ChangeLog
[Nexus 7 Android Development] gsmyth:
[MENTION=4202973]azoller1[/MENTION] will this kernel be getting updated for use with 4.4? It gave me a great battery life on 4.3 and 4.4 is smoother for me, so this would be perfect.
[Nexus 7 Android Development] gsw5700:
Wow, v2.3 is flying on 4.3
[Nexus 7 Android Development] Imoseyon:
Here's a kitkat version: https://github.com/imoseyon/leanKernel-grouper/wiki/kitkat-mr0-ChangeLog
[Nexus 7 Android Development] azoller1:
Updated to V3.0 KitKat version
[Nexus 7 Android Development] applicationz:
little laggy

Scores good in benchmarks but feeling overall laggy in kitkat rendering is quiet slow

Stock felt little more smoother
[Nexus 7 Android Development] Reiven89:
thanks to the dev for developing this amazing kernel, as soon kitkat custom roms become stable i will update this kernel, currently im very happy with this kernel in 4.3 version :d
[Nexus 7 Android Development] Reiven89:
Updated to 4.4 and kernel its working good just as the 4.3 version...so far the kernel with the best battery life
[Nexus 7 Android Development] arjit mehra:
Hey is cm 11 supported?
[Nexus 7 Android Development] evilgenx:
Installed and runs on cm11 nightly just fine.
[Nexus 7 Android Development] jt.one:
is anybody using this on 4.4.2?

I'm looking for a kernel to accompany stock rom
[Nexus 7 Android Development] waz675:
Yup, using this on one of my spare groupers with slim ROM 1.7 beta. Can't say I've thoroughly tested it as I use my gen2 nexus7 mostly but the web browsing, titanium backup reinstalling and the odd bit of general use seems to be working fine.
[Nexus 7 Android Development] Imoseyon:
v3.1 is up: https://github.com/imoseyon/leanKernel-grouper/wiki/kitkat-ChangeLog
[Nexus 7 Android Development] redeyedjedi:
unable to view any of the commits in the changelog...github says not found.
[Nexus 7 Android Development] sgt. meow:
If you're looking for the Permissive commit, it's something like this

[B]init.rc[/B]

on init

-
+ setenforce 0

sysclktz 0

loglevel 3
[Nexus 7 Android Development] redeyedjedi:
yes exactly..... I need to do this, without using a ramdisk....... but a script instead..... wanted to see exactly how selinux permits init.d. I've heard that some init scripts need to be ran'from /data/local. plus, this guy knows e some things about'battery life.
[Nexus 7 Android Development] azoller1:
updated to v3.1
[Nexus 7 Android Development] Androidnow:
Is the latest kernel working with stock 4.4.2. ?. Thanks for the upload.
[Nexus 7 Android Development] nealkoy:
Yes.
[Nexus 7 Android Development] Leonhan:
Is the version 3.1 the same thing as the one you uploaded last the other day?@.@
[Nexus 7 Android Development] Androidnow:
Working with stock 4.4.2. Confirmed.

Wanted to know even after setting Max 1100 MHz. I can see 13000 MHz being used in CPU spy.?
[Nexus 7 Android Development] azoller1:
updated to kitkat changelog link
[Nexus 7 Android Development] Androidnow:
GPS is not working on my device. stock 4.4.2
[Nexus 7 Android Development] arjit mehra:
Is it working with CM 11 ?
[Nexus 7 Android Development] 57op:
Yes, i'm using it.

Does this kernel have GPU overclock capability?
[Nexus 7 Android Development] arjit mehra:
Everything working?Any issues?How's the performance?
[Nexus 7 Android Development] nealkoy:
I've got to be honest with you, i feel like my N7 got slower every google update. With that said my experience with this kernel is definitely better than stock. Works like a boss! :thumbup:
[Nexus 7 Android Development] outlawmodzz:
didn't say in op.

Kexec ??
[Nexus 7 Android Development] redeyedjedi:
yea......I'm almost certain it does.
[Nexus 7 Android Development] Najuto9tail:
This is the best kernel I have tried on my nexus 7. :)
[Nexus 7 Android Development] aromig:
Same here, getting amazing battery life running with BS Harmony ROM. Good stuff!

Sent from my GS3 running Pac-Man ROM 4.3 nightlies
[Nexus 7 Android Development] elnahir:
Can anyone please share their CPU min/max frequencies? I've just flashed yesterday and would very much like to see how others are using the kernel. :)
[Nexus 7 Android Development] Reiven89:
I often flash kernels but in the end i always come back to leankernel...im using stock settings only downclocked to 1.3...best battery life and very good performance....haved some problems with 3.0 but the new version its perfect with purity rom and ART awesome smoothness and superb battery life
[Nexus 7 Android Development] just lou:
Any chance of opening up the GPU settings for overclocking?
[Nexus 7 Android Development] akashtaker001:
Working great on Purity ROM 4.4.2
[Nexus 7 Android Development] Najuto9tail:
do not know why v3 works better for me that v3.1 on kitkat latest stock rooted rom.
[Nexus 7 Android Development] just lou:
What's better about it?
[Nexus 7 Android Development] SlavPala4a:
Is there a possibility to add per app settings? Previously I used several kernels which worked great with "app settings". Unfortunately no luck here - whatever I do with the dpi/resolution nothing change. Must have for Dashboard installation.

Any suggestions on how to make it work?:confused:
[Nexus 7 Android Development] Najuto9tail:
Battery life
[Nexus 7 Android Development] Faschoda:
Best Kernel for my nexus 7 to date. The speedboost is amazing, just like the battery life! Great job dev
[Nexus 7 Android Development] _frog hair:
Sounds like your using ART runtime, which isnt supported by xposed framework yet... ?

//ttpro on Nexus7
[Nexus 7 Android Development] pjcanales:
What's a good setting to get both great battery and purchase while on stock ROM. I love this kernal but want to get more life out of it. Also what app to use for configurations?
[Nexus 7 Android Development] LuckySwitz:
download trickster mod on playstore..
[Nexus 7 Android Development] pjcanales:
What setting do you suggest to provide best battery life. I don't really need it at 15000 but at 13000. Was thinking of flashing the mode but not sure if it works with kitkat
[Nexus 7 Android Development] Erovia:
Has anyone tried this kernel with PAC 4.3? I've tried with v2.3 (the last one for JB) but bootlooped. I guess it has something to do with zImage.
[Nexus 7 Android Development] aromig:
Have had the same results with Pac. Sucks, as Leankernel has always been my favorite N7 kernel. Oh well, Pac 4.4 should be out this week. The it's back to Leankernel!

Sent from my GS3 running Pac-Man ROM 4.3 nightlies
[Nexus 7 Android Development] pjcanales:
How do I under clock using trickster?
[Nexus 7 Android Development] slebit:
Lower max frequency.
[Nexus 7 Android Development] pjcanales:
Sorry ment undervolt to try try to get more battery life . how do I do that in trickster?
[Nexus 7 Android Development] Erovia:
On the "Specific" tab you can find the "MPU Voltages".
[Nexus 7 Android Development] pjcanales:
I don't see that option in that tab.
[Nexus 7 Android Development] Erovia:
It should be on the very bottom of the tab. (Maybe LK doesn't support undervolting, but I seriously doubt it)
[Nexus 7 Android Development] pjcanales:
Can you show screenshot where it suppose to be and your referring to trickster app correct?
[Nexus 7 Android Development] Erovia:
Sure thing.

(I'm using Oxydo v16 right now and this panel changes according to kernel features so it definitely looks a bit different with LK)
[Nexus 7 Android Development] pjcanales:
Think lean kernel doesn't support it.
[Nexus 7 Android Development] Erovia:
Maybe you can give Performance Control a try.
[Nexus 7 Android Development] hc007x:
do you get good battery life with this kernel?
[Nexus 7 Android Development] Erovia:
Maybe the best kernel when it comes to battery.
[Nexus 7 Android Development] jocke_lulle:
Just flashed this kernel alongside 4.4.2 stock ROM and until now everything runs great! I haven't tried lean kernel before but it seems to be a good one:) Thanks!

Skickat från min Nexus 7 via Tapatalk
[Nexus 7 Android Development] _-..zKiLLA..-_:
Would be so awesome to see this get an update. Definitely one of the best daily driver kernels out there
[Nexus 7 Android Development] poondog:
Whats wrong with the current one :)
[Nexus 7 Android Development] _-..zKiLLA..-_:
Oh dont get me wrong theres nothing wrong with it :good: im just a feature freak that can never be satisfied with what i have :p

---------- Post added at 05:03 PM ---------- Previous post was at 05:01 PM ----------

There are newer linaro optimizations and i would love sio :p
[Nexus 7 Android Development] poondog:
New toolchains make like .0000001% difference ;)
[Nexus 7 Android Development] _-..zKiLLA..-_:
You may be right about that but sio makes a little more of a difference than that :p
[Nexus 7 Android Development] minifig:
Is there any chance of this kernel getting support for all-f2fs?
[Nexus 7 Android Development] Reiven89:
Thanks so much to imoseyon for making this amazing kernel for the Nexus 7 2012, the best available in my opinion. Running latest Purity + latest leankernel , even with only 2 cores active and underclocked 1ghz tablet is super smooth, 0 lags and battery life is really awesome, my Nexus 7 2012 feel like a new 2014 device... really fast...im really happy with this kernel
[Nexus 7 Android Development] Imoseyon:
Hey!!

v4.0 is up. Not a huge change but merged in 4.4.3/4 code so might as well bump up the major version number. :)

https://github.com/imoseyon/leanKernel-grouper/wiki/kitkat-ChangeLog
[Nexus 7 Android Development] Reiven89:
Thank you so much for your work! Will try the last update :) Best kernel ever please keep supporting the nexus 7 2012 :)
[Nexus 7 Android Development] theoctavist:
F2fs coming?
[Nexus 7 Android Development] minifig:
Great. Can you tell us if an all-f2fs version is something you're thinking about?
[Nexus 7 Android Development] Monfro:
+1 on F2FS request ?
[Nexus 7 Android Development] Imoseyon:
Hmmm how are you guys using f2fs currently? Is there an app, recovery or ROM that does the conversion for you? Does CM support f2fs?
[Nexus 7 Android Development] Monfro:
Most of us are using all-F2FS Roms:

http://xdaforums.com/showthread.php?t=2678140

Others only data partition formatted to F2FS:

http://xdaforums.com/showthread.php?t=2664392

Latest TWRP 2.7.1.1 support both formatting ext4 and f2fs.

Some kernels compiled with f2fs drivers are using only the zimage, like faux, carcosa or oxydo.

Or you can use agnostic flashing tool so the kernel can automatically detect the filesystem used:

http://xdaforums.com/showthread.php?t=2748975

It works very well.

Also M-kernel is using agnostic tool as a base.
[Nexus 7 Android Development] theoctavist:
I use carbon. Formatted f2fs using twrp.
[Nexus 7 Android Development] azoller1:
whoa i'm a little outdated! updated thread!
[Nexus 7 Android Development] autochef:
Server down

The Androtransfer server is down. Could you please update the mirror? 3.1 doesn't seem to play as well with 4.4.4 as it did with 4.4.2. Best kernel I've tried, as long as I don't mess much with the clock settings.
[Nexus 7 Android Development] adame09:
Same here... Can anyone post/host a mirror?
[Nexus 7 Android Development] Domino5:
+1 I'ts awesome kernel please upload it again on another site
[Nexus 7 Android Development] Imoseyon:
Sorry about the file host. Here's a new one: http://1drv.ms/1pYsqGb

I will work on F2FS as time permits...
[Nexus 7 Android Development] azoller1:
updated links
[Nexus 7 Android Development] ChavitoArg:
Nice
[Nexus 7 Android Development] adame09:
Running great
[Nexus 7 Android Development] Reiven89:
Hope to see the full f2fs support for this amazing kernel
[Nexus 7 Android Development] Imoseyon:
v5.0 is up: https://github.com/imoseyon/leanKernel-grouper/wiki/Lollipop-ChangeLog

Supports Lollipop and f2fs.
[Nexus 7 Android Development] r-l:
Not working for me. Stuck on Google logo

After this i can't even flash back to another kernel. Tablet stays on Google logo
[Nexus 7 Android Development] Imoseyon:
A couple of things in there that shouldn't have happened:

1) flashing my kernel should not get stuck on Google logo. Are you on grouper? What recovery did you use? Perhaps you had a bad download.

2) going back to recovery and flashing another kernel (stock) should have fixed it regardless - i don't quite understand why it stays on google logo still...
[Nexus 7 Android Development] adomol:
Can you boot to bootloader or recovery?
[Nexus 7 Android Development] r-l:
Yes i'm on grouper. Using this rom (f2fs) version http://xdaforums.com/showthread.php?t=2931064

Using the latest twrp

I had to sideload the rom again to get it fixed

---------- Post added at 06:41 PM ---------- Previous post was at 06:39 PM ----------

Yes i did to reflash the rom
[Nexus 7 Android Development] PatrickMac:
Same problem here. I got also stuck on google logo. Did use the newest TWRP recovery. Rom was BSZAOSP LP Rom.
[Nexus 7 Android Development] Imoseyon:
Yikes, ok there must be some weird interaction with my kernel and (some) custom ROMs. I've only done my testing with stock. Can we compile a list of ROMs that work with my kernel and another list of ROMs that don't.

If I were to guess, it would have to be the kernel patch step for supersu that may be interfering with custom ROMs.
[Nexus 7 Android Development] adomol:
I would wipe data,cache,dalvik,system... then flash rom, flash kernel.
[Nexus 7 Android Development] Imoseyon:
Ok those of you having trouble with custom ROMs: flash this version?

https://onedrive.live.com/?cid=F1ED4BADFEE3FC02&id=F1ED4BADFEE3FC02!367

(you may have to re-root afterwards)
[Nexus 7 Android Development] r-l:
Trying it now. For now 5 minutes of Google logo. Gonna give it another 10

Edit: not working
[Nexus 7 Android Development] Imoseyon:
Ok I'm working with [MENTION=2687658]bshiznit[/MENTION] on this - maybe other custom ROMs are on the same boat. May take a couple of days since this is work week for me though..
[Nexus 7 Android Development] toastido:
Can confirm it works beautifully on Stock Lollipop on my N7 :)
[Nexus 7 Android Development] Imoseyon:
Here's another build for custom ROMs if anyone wants to try before I get home tonight to try myself: http://goo.gl/lpgQ8e

EDIT: nope that doesn't work either - just tried it. Stay tuned.
[Nexus 7 Android Development] bshiznit:
Ditto :) thanks for your support
[Nexus 7 Android Development] Imoseyon:
v5.0.3 is up: https://github.com/imoseyon/leanKernel-grouper/wiki/Lollipop-ChangeLog

Fixes custom ROM compatibility issue, at least with [MENTION=2687658]bshiznit[/MENTION] 's ROM. Not sure about other custom ROMs. ;)
[Nexus 7 Android Development] bshiznit:
Awesome thanks! If I were to make my next version also support an ALL-F2FS ROM I can bake this in right? Credit in OP (of course)!
[Nexus 7 Android Development] Reiven89:
Please add full f2fs support to this kernel :)

Thank you
[Nexus 7 Android Development] Imoseyon:
I purposely left out /system because I didn't see the need for it for a read-only partition. But yes it can be done - ping me when you want a build. Honestly I think user perceivable performance difference between ext4 and f2fs is debatable, but it does make you feel like you have a new device. :)

ditto
[Nexus 7 Android Development] Imoseyon:
alright v5.1 is up: https://github.com/imoseyon/leanKernel-grouper/wiki/Lollipop-ChangeLog

This should be a good one.
[Nexus 7 Android Development] arjit mehra:
Is f2fs necessary on this one or not?
[Nexus 7 Android Development] Imoseyon:
Each leanKernel build (starting with v5.x) is compatible with both f2fs (cache/data) and ext4 (all).
[Nexus 7 Android Development] HaRdC0r3:
I think you need to update your updater script in your zip...it's kinda funny what it says
[Nexus 7 Android Development] Imoseyon:
completely intentional. Check update-binary.
[Nexus 7 Android Development] HaRdC0r3:
It's still not installing. I put the boot.img in an agnostic zip and it flashed no problem. Now I'm on the cm12 by euroskank lollisomethingorother...full 2FS.
[Nexus 7 Android Development] Imoseyon:
Might be a problem with recovery. The update-binary modifications should work fine on latest TWRP.

Edit: oh the install would also fail if you're not rooted. It runs /system/bin/supolicy as a last step in installation.
[Nexus 7 Android Development] toastido:
Took the f2fs plunge.

Sent from my Nexus 7 (2012) running Android 5.0 powered by leanKernel 5.1

---------- Post added at 08:40 AM ---------- Previous post was at 08:29 AM ----------

Also, [MENTION=4202973]azoller1[/MENTION], might want to update the title and OP regarding v5.x for Lollipop ;)
[Nexus 7 Android Development] azoller1:
Oh my its been awhile since I've been near these forums.... Thanks for the mention! Almost forgot! :D

Everything should be updated in OP!
[Nexus 7 Android Development] poondog:
Hi, just wanted to report that I flashed this kernel on stock lollipop, with f2fs and its running fantastic. This has always been a reliable go to kernel for me on grouper :)

Thanks Imoseyon for your work, its inspiring :)
[Nexus 7 Android Development] Reiven89:
Sorry for the noob question...can i have the link to the full f2fs flashable version if its released?
[Nexus 7 Android Development] slebit:
5.1 does work with both ext4 and f2fs.
[Nexus 7 Android Development] Reiven89:
If i flash the 5.1 version on a full f2fs rom, the tablet stuck in google logo...
[Nexus 7 Android Development] SkOrPn:
Sometimes you can fix that by repairing said partitions while in the recovery.
[Nexus 7 Android Development] poondog:
The ramdisk wont mount system as f2fs, only /cache and /data
[Nexus 7 Android Development] SkOrPn:
In that case, all he has to do is go back in and change /system to ext4 and flash the rom again. It should work then...
[Nexus 7 Android Development] Qwerty123 \m/:
Did clean install of rastapop, flashed rom adn kernel. Got error when flashing kernel :/
[Nexus 7 Android Development] r0nald:
"Never pay attention on notice.. Will try to flash v3" ;)

Flash v5.1, wipe cache partition & dalvik, No lack here. Stack at bootanimation... Comming from purity+franco.

Revert back to franco...;(
[Nexus 7 Android Development] gorneman:
Here is the agnostic version of the installer (so it works in all- F2FS too) fot 5.1 lollipop version.
[Nexus 7 Android Development] cwburns32:
Anyone know which version to use with most recent CM11 Nightly (12-06 build)? OP states that version 3.0+ are for 4.4 ROMs and when I go to downloads link I see v3.0 and v3.1 which I know I can likely use but what about v4.0 and 4.1? The OP doesn't talk about the 4.0+ version. Is this an updated version for 4.4 ROMs or something different entirely?
[Nexus 7 Android Development] JuggaloDroid:
I'm running 4.1 on the CM 11 nightlies. Works great. 3.0+ just means anything above 3.0 (except 5.0 which is for lollipop). Hope this helps :good:
[Nexus 7 Android Development] LucentBirch:
So wait, this won't work for all-f2fs?
[Nexus 7 Android Development] 57op:
As it is it won't work, just because the ramdisk doesn't mount /system in f2fs.

If you unpack boot.img and edit the ramdisk (fstab file), it would surely work.

Some posts before these, there is a flashable zip file which does it for you.

-

[MENTION=3357040]Imoseyon[/MENTION], could you please apply this commit ( https://github.com/CyanogenMod/andr...mmit/2bfad856683bb61e9f8ccd3f734d2a6d68116ca9 )? It solves stripes problem on gradient backgrounds
[Nexus 7 Android Development] Imoseyon:
I'll do all-f2fs for the next version as well as the gradient fix above. Stay tuned...
[Nexus 7 Android Development] LucentBirch:
Trickster mod doesn't hold the changes to the kernel...? What's a working alternative?
[Nexus 7 Android Development] ficino:
No problem download from link. Thanx, will flash your kernel

Edit works great! Thanx a lot! :thumbup:
[Nexus 7 Android Development] lmulli:
Not had one sod since using this kernel and battery/performance have been great.
[Nexus 7 Android Development] Nexus Theory II:
Running great w/ Freshly updated Smooth ROM v4.1. Great balance between Battery life & Performance. Using SetCPU to Tweak it out
[Nexus 7 Android Development] iamelton:
0.4 beta is up.. 8)

(dont have a github account to check the change log though..)

http://encounterandroid.com/imoseyon/grouper/beta/lk_nexus7_jb-v0.4.zip
[Nexus 7 Android Development] azoller1:
Ok updated to latest version, if you have problems with it just go back to v0.3 post issues on v0.4 at rootzwiki