yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Original Development] tpuserhp:
What changes included in your zip? It seems your zip does not do much. Please check. It is missing the important system/su.d folder.
[Nexus 7 Original Development] eNVy:
How to increase the minimum CPU freq ?
[Nexus 7 Original Development] gorneman:
No, the script simply adds some ui and background processes tweaks to build.prop
[Nexus 7 Original Development] adstraylight:
Also adds the tweaks to WiFi via the nvram.txt.
[Nexus 7 Original Development] tpuserhp:
Thx for clarification of the changes.
[Nexus 7 Original Development] chosin137:
Is there a changelog or somewhere to see changes in unlegacy android nightly builds? So far I'm not seeing much on Github and the MB size of the rom hasn't changed at all.
[Nexus 7 Original Development] sheffzor:
Follow our gerrit.unlegacy-android.cf

Enviado do meu A0001 através de Tapatalk
[Nexus 7 Original Development] abhifx:
They have a gerrit system. You can see what is getting merged. However, you are right that nothing much is happening regarding grouper. Haven't checked today though.
[Nexus 7 Original Development] samt3:
I've had a problem with numerous roms after the boot animation the screen just goes black. There was sound and everything just no picture. I flashed this rom and had the same problem but I played with it for a while and finally got the screen the come on. The problem is the screen goes completely black if i cut the brightness down below 50% and it has done with rom after rom. Anyone else experience this and maybe have a solution?
[Nexus 7 Original Development] erk1725:
Updated to the latest on black friday and everything is running good for my son....and he plays a lot of games. He is almost 8 and is always using google app (talking to now) and chrome to search for things, but mostly games. He pretty much killed it in 10 hours with 3 hours SOT the next day because he was having so much fun and everything was running really well. I made a few tweaks to the interactive governor settings using kernel adiutor and added ro.sys.fw.bg_apps_limit=20 to build prop and havent had any issues. Have substratum for pixel like navbar and the black pixel boot animation....its really smooth. No parrotmod or any other tweaks

Thank you very much for your time, effort and knowledge on this old thing DEVS!! You guys are amazing
[Nexus 7 Original Development] Sage:
16GB or 32GB version mate?
[Nexus 7 Original Development] erk1725:
16gb
[Nexus 7 Original Development] pruwait:
Kernel 3.4 for lollipop grouper

Where can I get Kernel 3.4 for lollipop grouper? Please post link for boot.img.
[Nexus 7 Original Development] abhifx:
if you follow the thread, this project entails more changes than simply kernel modifications including blobs, HAL etc.

Thus there is no boot.img to flash. this is a ROM plus kernel development thread. a similar efforts has to be made for 5.x ROMs
[Nexus 7 Original Development] abrls:
Anyone having problem to format or change partition filesystem to ext4 with wipe function in custom TWRP 3.0.2.0 (twrp-3.0.2-0-grouper-k3.4-20160822.img) posted in the 1st post of this thread?

Can I use the official Grouper TWRP 3.0.2.0 instead of custom TWRP to flash the new kernel (K3.4) and ROM?

Thank you!
[Nexus 7 Original Development] aquavalanche:
tried using the 0112 build on 32gb grouper, having a lots of lag and also lots of FCs (fast scrolling after opening new app).

It seems there are indeed some problems on 32gb grouper.
[Nexus 7 Original Development] kalafior12:
0112 version is the master of fc's on the 16gb too:(

Wysłane z mojego LG-D855 przy użyciu Tapatalka
[Nexus 7 Original Development] Sage:
everyone on 32gb seems to have the FCs...
[Nexus 7 Original Development] Ziyan:
Frankly, this isn't an issue with k3.4; it's an issue with outdated GPU drivers (it's happening on roms with k3.1 and Nougat as well). We have to open-source libnvos at least to fix it, which isn't easy (I'm like halfway done with it).
[Nexus 7 Original Development] abhifx:
this will definitely look like a noob question but.. what does libnvos do? i tried googling but with no proper answer.

also if this is proprietary blob, then hats off for making an open source substitute.
[Nexus 7 Original Development] chosin137:
mmmm updates gerrit.unlegacy-android.cf
[Nexus 7 Original Development] abhifx:
not to mention open source nvos libs are pushed. just have to wait to get it merged.

http://gerrit.unlegacy-android.cf/#/c/1081/
[Nexus 7 Original Development] kalafior12:
excellent ! let us know which version it will happen.

WysÅ‚ane z mojego LG-D855 przy uÅ¼yciu Tapatalka
[Nexus 7 Original Development] abhifx:
well monitoring grouper is a tad difficult as lots of stuff has been pushed in gerrit but lot less gets merged. lets see if nvos.so gets merged soon.

Edit: it turns out libnvos is being tested on another branch. so it should be a bit faraway before we see it mainline. but devs are doing amazing work, lets keep our patience.

Double Edit: newer libnvos is pushed. we need a test build :D
[Nexus 7 Original Development] kalafior12:
Ok where is it , where is it ? I can't wait :)

Wysłane z mojego Nexus 7 przy użyciu Tapatalka
[Nexus 7 Original Development] PJBrs:
[MENTION=2633638]Ziyan[/MENTION], [MENTION=4619263]sheffzor[/MENTION], I see you're doing impressive work! I'm still working on k3.4 for A2109. I have only one issue left (apart from the screen flashing, which I have worked around instead of fixed). Bluetooth audio doesn't work anymore. Did you have the same issues? I just wanted to check. I'm afraid my forward port of an old sound driver is breaking bluetooth audio, but if you have had the same issue, then perhaps there's more hope for a fix :)

For the rest - my compliments on your work! I'm not following it very closely, but even then I've already used a lot of it! Main difference - I'm using nvidia blobs from JB-4.1, but most principles remain the same.
[Nexus 7 Original Development] thagabe:
My Nexus 7 seems to stop working and after a while it will comeback (usually after a cold boot) then a reboot is required for everything to work again. Good work on the newer kernel! I am really enjoying this kernel+Rom. As an off base question, will you be pursuing kernel 3.10? Seems 3.4 has reached EOL. I am a programmer too (still student), if you are willing to give me a crashcourse I'll take a stab at helping contributing code to this great project!
[Nexus 7 Original Development] KawaiiAurora:
The AOSP 7.1 nightlies have been quite fast (and slightly unstable, I've read about the libnvos bug) BUT I've been having this issue, sometimes, the animations slow down to a crawl and after a few seconds or locking the screen, they're normal again. Anybody had this issue? It's been present in all 7.1.x nightlies for me IIRC.

Thanks for the awesome work!
[Nexus 7 Original Development] gorneman:
Hi, any news on new builds with open source libnvos ?
[Nexus 7 Original Development] anzi2001:
Yeah im interested in this hardcoding thingy too :D
[Nexus 7 Original Development] Ophidian_DarkCore:
https://github.com/Ziyann/android_k...45dd/arch/arm/mach-tegra/board-grouper-misc.c

change static unsigned int grouper_pcbid;

to static unsigned int grouper_pcbid=yourpcbidfromkmsg;

but apparently thats fixed now so it's irrelevant

---------- Post added at 09:15 PM ---------- Previous post was at 09:14 PM ----------

use abootimg to take your rom's boot.img and decompress it. take the ramdisk from that and put it in your 3.4 boot.img
[Nexus 7 Original Development] anzi2001:
just out of curiosity since made nvidia 3.1 and 3.4 kernels for our nexus is it possible to port 3.10 too? :eek:
[Nexus 7 Original Development] Ziyan:
Certainly, but we need a bug-free 3.4 base first... it's kind of sad how no dev is really interested in this, I was hoping someone would fix those third board revisions by now...
[Nexus 7 Original Development] anzi2001:
i would be in this 100% if i could develop like a real developer not just cherry-pick from other lo...to bad if franco or metallice would be here our nexus wouldbe like new :D glad i see you will still go to 3.10 :D
[Nexus 7 Original Development] namerke:
He didn't say that he will do it, he just said that it it possible to do so.

Without any support from other devs it is kind of a big project and 3.4 is not even bug free yet

Fingers crossed though...
[Nexus 7 Original Development] anzi2001:
Well i think that he will do it cause he said he needs a bug free 3.4 kernel first :) but i would love to see it too :D and if some other developers join our n7 would be like new...too bad google didnt update the kernel tho :(
[Nexus 7 Original Development] Ophidian_DarkCore:
I have the third board revision. Whoever needs to work on it, send me a message.
[Nexus 7 Original Development] Streetwalker:
First thing would be to tell us how to identify the board revision, this question has been asked several times and no one actually answered it.
[Nexus 7 Original Development] Ziyan:
While running any 3.1 kernel (after a reboot):

dmesg | grep pcbid

Post the output - it should be similar to:

pcbid=0x01ae (projectid=0x00)

I might post a kernel later today for more people to test, so we could possibly identify what's different with those boards.
[Nexus 7 Original Development] chall32:
Mine:

127|root@grouper:/ # dmesg | grep pcbid

<6>[ 0.441419] [MISC]: pcbid=0x009e (projectid=0x00)

Hope this helps!
[Nexus 7 Original Development] Streetwalker:
I have the same pcb/project IDs and I found mentions of MAX77663 in my dmesg.

I know how to compile a kernel and can mess with it a little bit if needed.
[Nexus 7 Original Development] Ziyan:
Nice, report back if the kernel boots for you by default :)
[Nexus 7 Original Development] Streetwalker:
Just to be clear I meant 0x009e as my pcbid. I'll check it out when I have time and when my internet connection is fixed. My tablet is f2fs at the moment but I haven't been using it at all and I don't care if I need to reset it so I'll be fine.
[Nexus 7 Original Development] Ophidian_DarkCore:
just add f2fs to the source, takes <2 minutes
[Nexus 7 Original Development] Streetwalker:
Yeah the problem is, I'm on CM and I remember reading that you need extra patches for that. I don't really mind resetting, but right now I lent the tablet to my mom because her e-reader is broken.
[Nexus 7 Original Development] Servo260:
Hi, sorry if it's too difficult, but can someone compile this kernel with f2fs for use with ratapop? I would do it myself but I have no idea on how to do that...
[Nexus 7 Original Development] anzi2001:
http://xda-university.com/as-a-developer/getting-started-building-a-kernel-from-source

Its pretty easy really :) these are the basics of kernel building :) if you want f2fs on it you can just go to a kernel that has f2fs go to the source look at the commit where the f2fs was implemented and cherry pick it :) i would do it for you but my tablet's touchscreen is dead( ill miss you my dear tablet, and ill miss these forums too :( ) and i dont have rastapop neither dont i have f2fs :/
[Nexus 7 Original Development] Servo260:
Thanks! I'll look into that!
[Nexus 7 Original Development] anzi2001:
No problem man :) if you need help just pm me or message me here ill try to help you :) if i cant then go to the pros... to [MENTION=2633638]Ziyan[/MENTION] :D
[Nexus 7 Original Development] KawaiiAurora:
Nopes.. I occasionally check the Gerrit commit page and there's nothing.
[Nexus 7 Original Development] sheffzor:
Guys, for those who have issues flashing and/or booting grouper/tilapia, we would recommend to test our latest twrp builds built from kernel 3.4 sources and with some minor fixes.

We will w8 for your feed back.

PS: Don't forget that to flash this twrp builds, you need to boot to bootloader and use fastboot tool!!

PS2: We are near a solution for those FC issues, as you know, they are related with nvidia drivers, while open sourcering libnvos is a painful work, we are tracking a workaround to patch nvidia drivers to fix the issue, at least for now, since we aren't plain of time to work on this project the way we would like...
[Nexus 7 Original Development] abhifx:
cheers for ps2
[Nexus 7 Original Development] pincher65:
after flash this recovery on grooper I can't enter the recovery mode
[Nexus 7 Original Development] sheffzor:
Just flash the official one.

Can you please post here the bootloader screen of your device...
[Nexus 7 Original Development] pincher65:
I and have made

screen
[Nexus 7 Original Development] sheffzor:
Can you take one readable? ?

That would help! ?
[Nexus 7 Original Development] pincher65:
maybe I will just write what interests you?
[Nexus 7 Original Development] sheffzor:
Variant and HW
[Nexus 7 Original Development] pincher65:
variant - grouper

HW version - ER3

flash on your previous recovery
[Nexus 7 Original Development] gorneman:
Flashed wrp-3.0.2-0-grouper-k3.4-20170111.img without errors.

Variant: grouper

HW revision: ER5
[Nexus 7 Original Development] PJBrs:
Reacting to my own post... I fixed bluetooth audio by using a newer HAL for a different tegra3 tablet, the Wexler Tab 7t. There appears to be little or no development going on for this tablet, but there's one page that collects all kinds of info for it, including sources -->

http://4pda.ru/forum/index.php?showtopic=426283

(in Russian, unfortunately). They provide links for original firmwares.

I do think I still have one kernel issue left, I sometimes get a reboot when I plug in a charger while the tablet is asleep. Something to do with max77663 regulator and nested interrupts. Oh well :)
[Nexus 7 Original Development] TheDramatic:
Kernel rebuilt with default grouper_config and gcc 4.9 bootlooping on google-logo

Hey Guys,

I have huge issue getting a rebuilt kernel to boot. (Google-Logo Bootloop)

Target ROM I want to boot is AOSP-7.1.1 from UnlegacyAndroid.

(Which works with the kernel included in the ROM, but not if I compile the same kernel from git myself.)

Toolchain used is the prebuilt arm-linux-androideabi-4.9.

Steps I take: (maybe I do something wrong?):

1. git clone the kernel_grouper git repository.

2. Set ARCH and CROSS_COMPILE to "arm" and path to the toolchain.

3. make grouper_defconfig

4. make

5. unpack boot.img from latest Unlegacy-Android AOSP 7.1.1 build

6.replace unpacked zImage with the built zImage from ./arch/arm/boot/

7. mkbootimg --kernel zImage --ramdisk unpackedramdiskUA-7.1.1.cpio.gz -o new-boot.img

8. fastboot flash boot new-boot.img

9. reboot

10. google-logo-bootloop

11. google-logo-bootloop

12. google-logo-bootloop

13. google-logo-bootloop

...

I'll try to get UART to work via the audio-jack so I can get debug info,

but so far its driving me nuts.

Could you please confirm that the default grouper_defconfig works and the build procedure as described (and the current state of the gitrepo) can produce a bootable kernel to begin with?

Many Thanks
[Nexus 7 Original Development] abhifx:
some ksm & bfq related changes have been merged
[Nexus 7 Original Development] aleks10393:
When things get a little louder playing music or watching videos.... there this weird hissing sound coming from the speaker? Is that the metal sheet between the speaker and the hole in the case? Can i fix it?
[Nexus 7 Original Development] namerke:
I've flashed the build from the 10th of this month, unfortunately I'm facing some bugs which already got mentioned in the thread several times. It seems like opengapps support got broken again. Also, as you probably know apps are force closing pretty much constantly, but it happens way more often when the memory is under pressure. Not sure if there is a direct connection but that's my experience. Additionally, I'm facing random reboots, and when these reboots occurs I can hear some noise from the speakers, it sounds like it's charging up, and then there is a "pop"- ing sound in the end of it. Like when you blast a balloon, but obviously not so loud. Let me know if I can help in any way with the debugging.

Edit : after limiting the maximum number of background process to a maximum of 3 or to 2 the number of force closes got noticeably less. I'm still suspecting a relation with memory usage but that's just my 2 cents. :)
[Nexus 7 Original Development] tinybilbo:
Where can I download this rom?

The latest build link goes to a domain parking page and the downloads sections doesn't have the latest builds only 7.0x ones..

Thanks
[Nexus 7 Original Development] chosin137:
You are not missing anything, Unlegacy Android 7.1 builds for Grouper are not stable as a daily driver. Using ParrotMod does help but there is just too many apps closing, reboots and lagging issues in the UI to consider this for a daily use.
[Nexus 7 Original Development] tinybilbo:
Thanks for the reply...

I was looking to make a nethunter install, so needed a 3.4 kernel.

I actually installed the 7.0 rom, that I was to download, (& installed parrotmod).

I installed the latest nethunter fine.

I've had no reboot or lags, a couple of apps closing, nothing major.

However as soon as I installed gapps, everything went pear-shaped!

FC's everywhere....

Based on your reply (and reading through the thread) I'm going to rollback to an earlier version of nethunter on Lollipop..

I'm still curious to try the latest version of this rom... My Nexus 7 is retired, so I am just basically playing with it!...
[Nexus 7 Original Development] Ziyan:
We're having some serious lack of time. Anyways, the builds should be available from the updated link in OP. Yes, 7.1 has some strange FC issues, but 6.0 should be fine (and it uses exactly the same kernel).
[Nexus 7 Original Development] tinybilbo:
Thank you...

I'm not too fussed whether I run MM or N I really just need the 3.4 kernel for the latest Nethunter.

I'm downloading both 7.1 and 6.0 from the updated links, and I will go with whichever is more stable (6.0 I imagine).

I did'nt actually realise you had a 6.0 rom with the 3.4 kernel, so thanks again for that!!
[Nexus 7 Original Development] Cocalarix:
Thank you for this!
[Nexus 7 Original Development] tinybilbo:
Hi...

Could you please check the files

ua_grouper-6.0.1-20170207.zip

ua_grouper-6.0.1-20170221.zip

ua_grouper-6.0.1-20170227.zip

(ua_grouper-6.0.1-20170123.zip seems to be fine)

I've downloaded them multiple times now, They download correctly but won't install, and fail both a md5 hashcheck and winrar test.

Thanks for all the hard work... :)
[Nexus 7 Original Development] Ziyan:
Someone with a non-booting variant and the ability to test, please contact me on Hangouts to finally get to the bottom of the issue.
[Nexus 7 Original Development] chosin137:
Are we good to update to TWRP 3.1.0
[Nexus 7 Original Development] SGH-i200:
ua_grouper-7.1.1-20170311.zip has a crc checksum error

The newest 6.0.1 build (ua_grouper-6.0.1-20170313.zip) is ok says the 7zip archive check! :)

The newest 7.1.1 build (ua_grouper-7.1.1-20170311.zip) has a crc checksum error on file system.new.dat says the 7zip archive check. :(
[Nexus 7 Original Development] sheffzor:
Heys,

We've found an issue on cloudflare caching feature, we have disabled it until we know what's going on, builds should be ok to download without any issues.
[Nexus 7 Original Development] Ziyan:
Thanks to [MENTION=3218659]C--Mon[/MENTION], who had a non-booting variant, we were able to implement a fix so (at least) his variant is now booting fine as well. Starting from 03/16, the 6.0 (yes, 6.0 is still maintained as well) and 7.1 builds include the fix; if anyone else has an issue getting this to boot, please contact me :) there were also a few minor security patches added last week, and we're working on implementing a changelog system.
[Nexus 7 Original Development] DumF0rGaming:
7.1.1 still crashes often because of GPU, right?
[Nexus 7 Original Development] Oblivionevil:
My nexus 7 2012 32gb is still not booting

ua_grouper-7.1.1-20170317.zip

What do you need ?
[Nexus 7 Original Development] C--Mon:
I tryed the latest build today (clean flash) and it also won't boot for me. Maybe the fix is still not merged? Otherwise I'll try to gather some logs tomorrow.
[Nexus 7 Original Development] chosin137:
Hey guys so I know we have a custom recovery + kernel so do we need to update the specialized twrp for the newest version or are we good to just flash the latest twrp over 3.0.2.0?
[Nexus 7 Original Development] C--Mon:
I've just tested the latest version of the ROM (ua_grouper-7.1.1-20170317.zip) together with [MENTION=2633638]Ziyan[/MENTION].

It now works perfectly on my grouper! :cool:

The proplem was a wrong fileformat on my /cache partition.

It was on f2fs, which is currently not supported by the ROM. After I changed it to EXT4 it worked perfectly.

Maybe you have the same problem?
[Nexus 7 Original Development] Oblivionevil:
build 21.03.2017 boots thx
[Nexus 7 Original Development] Ziyan:
I didn't notice the crashes since a while now, but I'll keep my eye open...

Alright, the next builds will have the formattable flag defined in the fstab, so it should reformat /cache if the filesystem is wrong :)

Anyone else left with a non-booting variant?
[Nexus 7 Original Development] namerke:
With all due respect [MENTION=2633638]Ziyan[/MENTION] , since when should the force-closes be gone? The last build I tried was from the 8th (both 7.1.1 and 6.0) of this month, it booted just fine but unfortunately I've been introduced to a huge number of application force-closes, both for system apps and for manually installed ones. Apps have been closing on me so often that I was unable to use those builds for daily drivers.

Since I don't face this issue on any other 7.1.1 or 6.0 custom rom with 3.1 kernel I assume the culprit is either my user behaviour or something in your builds.

Should this issue be gone by now?

Is there any way I can help you guys to debug it if it is still persists?
[Nexus 7 Original Development] Ziyan:
Even on 6.0? :eek: anyways, I contacted you on Hangouts :)
[Nexus 7 Original Development] C--Mon:
You can also suffer from sudden app crashes on other ROM and 3.1 Kernels.

For example look at the AOSP ROM from [MENTION=2188693]AndDiSa[/MENTION]. It is at the moment one of the best 3.1 Kernel based ROM's that you can find for our Grouper device. But it also has app chrashes from time to time.

If I remember right [MENTION=2188693]AndDiSa[/MENTION] figured out that it was something webview related but couldn't fix the bug completely till yet.
[Nexus 7 Original Development] Ziyan:
I'm pretty sure that it is a 7.1 issue; AndDiSa has a lot of framework workarounds, trying to fix the issue... I'm going to install some apps today to trigger the issue (it appears that it won't appear with my light weight usage), then I'll see if I can do anything.
[Nexus 7 Original Development] AndDiSa:
[MENTION=2633638]Ziyan[/MENTION] it's very hard to reproduce. I have the impression, that those closes occur mostly after an update / new installation of an app and . I noticed also that on futher usage the device those closes occur less. So I am am thinking it might be related to art running in background optimizing the app while using the app in the foreground, but I am not sure. Mostly you can see some exception related to RenderThread when the close is happening.
[Nexus 7 Original Development] Ziyan:
Alright, I have a few ideas (and a workaround I'm testing) for the FC issue. Someone willing to help with testing, please contact me on Hangouts. [MENTION=2188693]AndDiSa[/MENTION]? I wanted to talk with you about a few things anyways... :)
[Nexus 7 Original Development] AndDiSa:
[MENTION=2633638]Ziyan[/MENTION] I've sent you a hangout invitation.
[Nexus 7 Original Development] DumF0rGaming:
[MENTION=2633638]Ziyan[/MENTION]; [MENTION=2188693]AndDiSa[/MENTION] heads up and fingers crossed for you guys, the tablet belongs to my father, so I'm willing for a rock stable build :fingers-crossed:
[Nexus 7 Original Development] C--Mon:
I would really like to help you by providing log files during the bug fixing.

But unfortunately I'm over the next 3 weeks in the US and have no time to create log files :(