yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] ud4:
Updated!

20191006:

-CPU OC to 1.3Ghz, Android GO, Introduce 256MB zRAM

This version can show you warning about vendor, just ignore it.
[Nexus 7 Android Development] TureX:
Hi!

So now android was converted to android go?
[Nexus 7 Android Development] laugeek57:
Hello,

I can't install mod sound on this 8.1.0 so sad :(

dolby atmos DDP nothing....
[Nexus 7 Android Development] ud4:
Android GO is just some parameters in build.prop
[Nexus 7 Android Development] ud4:
Please, don't spam in thread, I didn't support any mods. I can advice you "Audio Modification Library" and "Audio Compatibility Patch" in Magisk.
[Nexus 7 Android Development] andi63:
Version 2019/10/06 doesnt boot

Hello!

Thanks for your work on the old Nexus 7.

I've tried Version from 2019/10/01 with gapps mentioned in the starting post, this version worked fine for me.

Tried to update (dirty flash) to 2019/10/06, installation was ok but boot stuck at Lineageos logo.

Made a factory reset and tried a clean install of ROM + gapps with 2019/10/06 version - but it was the same. Installation went OK but first boot stuck at Lineageos logo (about 15 minutes, than I gave up).

Thanks for your help.
[Nexus 7 Android Development] brewer75:
I did a clean install and my grouper booted but apps kept crashing so I gave up for now.
[Nexus 7 Android Development] laugeek57:
It happened to me also at each installation the tablet freezes at a time or our on the bootanimation ... just enough to force reboot if it happens ... :)
[Nexus 7 Android Development] ud4:
Eh, I forgot to say, if tablet stuck at LineageOS logo, just do hard reboot
[Nexus 7 Android Development] andi63:
Thanks, I managed to get the tabled working (including Gapps + Magisk):

- Factory reset

- Install ROM (2019/10/06)

- Reboot to recovery

- Install GApps (from first post)

- Boot ROM (hard reboot wenn it freezes at bootscreen)

- Shut down, boot to recovery, install Magisk, boot rom

So far ROM, Playstore and Magisk are working. Looks like some settings (like magisk permissions, bluetooth on/off) got lost at reboot.

But biggest problem is - tablet freezes quite often with this rom. It even freezes while it lies on the table - I put it away, screen went a little bit darker after a while - when I take it up some minutes later, tablet is warm and doenst respond to touches or pressing any button. Only possibility is hard reboot.

BR Andi
[Nexus 7 Android Development] ud4:
Hello! I want to try build LOS with 3.1.10 kernel for more smooth and stability :)
[Nexus 7 Android Development] AndroidGuy087:
My plans for your device tree and kernel is to try using them to build LineageOS 16 instead of 15.1. I'll try playing around with them at some point to see if I can get LineageOS 16 to boot using them.
[Nexus 7 Android Development] iBristlecone:
Thanks for your work! I flashed the latest 2019/10/06 build from AOSP 7.1.2 after factory reset and it successfully booted. The system did stop working sometimes and I had to do a hard reboot. BTW, I noticed that I couldn't adjust the brightness. Other than that it's exciting so far. Looking forward to your next build!
[Nexus 7 Android Development] wilmsn:
What kind of filesystems are supported?

Can i use f2fs for data and cache?

If i use ext2 or ext4 it does not boot.

With f2fs it stops on the splash screen of LineageOS.
[Nexus 7 Android Development] GianniDPC:
Does safetynet work on here?
[Nexus 7 Android Development] vinibali:
same here. f2fs doesn't works even for the cache partition.
[MENTION=5213841]ud4[/MENTION], we could be so happy if you communicate something to us. can we expect some work on your rom?

we are here and ready to help :)
[Nexus 7 Android Development] enkrypt3d:
where is the vendor image for this build? Getting vendor mismatch on first boot. sorry if this was already covered...

I need one that matches:

OPM7.181205.001

Thanks!
[Nexus 7 Android Development] ud4:
I said about it in changelog, just ignore that.
[Nexus 7 Android Development] ud4:
If boot stucks on lineage logo just reboot it same times, I trying to fix it in next build :p
[Nexus 7 Android Development] vinibali:
I had to reboot couple of times even with EXT4 cache and data.

I'll wait for the new build.

will F2FS enable in the next kernel config?

would you be able to find the backported sources for the flash-friendly filesystem?
[Nexus 7 Android Development] ud4:
F2FS is already enabled in kernel config and device tree.
[Nexus 7 Android Development] vinibali:
whatever I try I couldn't make it work even if only the cache partition is on F2FS
[Nexus 7 Android Development] :
I clean flashed this ROM yesterday plus gapps and magisk; all good with no major problems. It's a bit hesitant/laggy but seemed functional with no lock-ups or crashes.

Edit: fixed my issue. This is a functional ROM (imho) but it is laggy. I don't blame the ROM at all for that, I think I've reached the limit of my grouper's abilities running android 7.
[Nexus 7 Android Development] ud4:
Hello! Last build is the final build. I didn't have so much time to support this ROM. Maybe I update this ROM soon, but without major changes. Good luck!
[Nexus 7 Android Development] RelapseUK:
No root access and no recovery mode... now I'm stuck with an os that I cannot use! cannot install Gapps because TWRP needs root. Cannot root because no recovery mode. Catch 22!!!

Please help!!!

It gets worse. Since install Lineage OS, PC not detecting the device... I've tried usb debugging enabled/disabled etc...
[Nexus 7 Android Development] 00p513:
Try pressing power + volume down when you start up. You should end up in a screen with an android robot's belly open.

Reinstall TWRP from there website. Search for grouper in devices. Follow the fastboot install steps ignoring the adb reboot bootloader command.
[Nexus 7 Android Development] Wish39:
I can't get this rom to boot on my device. I've installed it multiple times and all it does is bootloop and then freeze.
[Nexus 7 Android Development] chinchulin01:
Hello everyone. Will there ever be a Tilapia version of this ROM? Kindest regards.
[Nexus 7 Android Development] 00p513:
Unfortunately this ROM is discontinued
[Nexus 7 Android Development] JT1510365:
how do you know your not the OP or the dev that made this ROM?
[Nexus 7 Android Development] AndroidGuy087:
Because the OP literally said that the latest released build will be the last one a couple of replies back.
[Nexus 7 Android Development] JT1510365:
Sorry must not of seen that post lol i am retarded sometimes:) Thanks for your answer!
[Nexus 7 Android Development] RelapseUK:
Sorry it has taken a while to get back to you. Busy life these days.

Anyhow, I should have mentioned this in my OP.

After downloading the grouper twrp img the option to flash does not appear. I am stuck in a loop of downloading and no flash option and App says device not rooted... which is the cause of all my issues. NO ROOT ACCESS
[Nexus 7 Android Development] 00p513:
uuuuhhhh scroll up...
[Nexus 7 Android Development] darkvicious:
No one to take over, because the rom is functional and my nexus 7 has come back to life no lag and it has been reacting well for more than a week already
[Nexus 7 Android Development] ch3mn3y:
I'm trying to boot it on my grouper, but always hangs up on the bootlogo... Tried ext4, tried f2fs (even after I read it wont work).

Do I HAVE t have stock prior flashing?

All I flashed was lates LOS and MAGISK 20.1. Nothing else...
[Nexus 7 Android Development] anorakophobia:
Hi,

successfully tried this rom, very nice, thanks for this.

Sadly camera isn't working as you have written in the known-issues-list.

Will it be fixed or anything I can do myself regarding it?

Thanks
[Nexus 7 Android Development] NikoNik7:
Cool! Please port to Tilapia!:angel::angel:
[Nexus 7 Android Development] vinibali:
pretty same for me. just trigger a reboot if it's stuck.
[Nexus 7 Android Development] ch3mn3y:
Didn't work. Nothing worked so I flashed different om...
[Nexus 7 Android Development] Bitkrake:
GPS not working

Hi,

thank you for the LOS ROM, which gives my grouper a new live :)

My GPS is not working.

In the settings it's switched on, but all GPS software (mainly OSMand, GPS test from FDroid) try to to switch it on again and do not

find a GPS signal.

The devices is not rooted and Gapps is not installed.

KR

Bitkrake
[Nexus 7 Android Development] juanmontero95:
Vendor image mistmatch after flashing

Hi, I tried to install Lineageos on my Nexus 7 (Grouper) with this rom.

After the starting screen of lineage os I have a popup saying

android system

a vendor image mistmatch has been detected

typically this mean your vendor image is out of date

please ensure your vendor image matches OPM7.181205.001.

Do you know what's going on and how to fix it ?
[Nexus 7 Android Development] tomtom_38:
there will be a fix for the cam ? I want to use apps like zoom with this device
[Nexus 7 Android Development] enderzip:
Does this rom support treble?
[Nexus 7 Android Development] joam280:
Great job on this rom, looking forward to having android on our tablet [emoji12]

Enviado desde mi Nexus 9 mediante Tapatalk
[Nexus 7 Android Development] joam280:
I have freezing problems in the system, someone else with this problem? it solves when i reboot the device

Enviado desde mi Nexus 7 mediante Tapatalk
[Nexus 7 Android Development] johndaog:
Having difficulty

I have tried to load this ROM

Battling a bit

cant get it to load up with MindtheGapps as indicated, gets stuck at boot logo

With F2FS format it allows the installation but doesn't get into OS

it works only alone without Gapps, have to make a plan with FDroid

Thank you though
[Nexus 7 Android Development] Plbg:
Hello together,

thanks for creating this rom. But I have a small problem. I tried to install together with GAPPS pico and it tells me that I don't have enough space. Can anyone help what to do?

I looked for information for gapps-config but I didn't understand which apps I have to install and which not...
[Nexus 7 Android Development] cesedy:
Yesterday I had the same problem.

I tried to extend system partition, taking a bit from data partition, but I had the error from parted:

Error: /dev/block/mmcblk0: unrecognised disk label

So, as partitions are not recognized by parted, I could not extend.

When I tried to use newer parted, then I got an error, that kernel was too old.
[Nexus 7 Android Development] cesedy:
I got the MindTheGapps working on this device. At first, when I installed MTGapps, I got the "Unfortunately Google Play Services has stopped" error, when trying to log into Google account.

First, you can try to Factory Reset the device in Settings and see if that helps. If not, try the steps I took:

1. Wipe all partitions in recovery, then connect USB to computer and copy LinageOS, Magisk and MindTheGapps 8.1 ARM packages in system memory.

2. Installed LinageOS and after before restarting I installed Magisk. Now I did a reboot.

3. You might get stuck LinageOS boot logo, just hold Power button until the device reboots and now it should boot normally.

3. Go through SetupWizard until you get to Start screen.

4. Reboot into recovery and install MindTheGapps, clear dalvik/cache and reboot.

5. Try to open Play Store, but got the "Unfortunately Google Play Services has stopped" error.

6. In the settings do a Factory Reset.

7. Again, the device could hang on LineageOS boot logo, just hold Power button until the device reboots and now it should boot normally.

8. Go through SetupWizard until you get to Start screen.

9. Now on the Start screen there should be Play Store icon, open it and you should be able to log into your account.

So, these are the steps I took to get it working.
[Nexus 7 Android Development] ud4:
Updated! Changelog: Move to 3.1.10 kernel (more stable than 3.4), Remove Android GO, Some other tweaks
[Nexus 7 Android Development] ud4:
Once again... Updated and GPS Fixed!
[Nexus 7 Android Development] tomtom_38:
Is here anybody that use zoom with this build?
[Nexus 7 Android Development] wwt:
Thanks for the update! So far, everything is OK. There is one problem I tried to install open_gapps-arm-8.1-nano-20200516.zip, open_gapps-arm-8.1-pico-20200516.zip.MindTheGapps-8.1.0-arm-20180808_153837.zip .MindTheGapps -8.1.0-arm-20180808_153837.zip. All installations with an error
[Nexus 7 Android Development] laugeek57:
Same for me I did not manage to install a version gapps 8.1 compatible with this last version ....:confused:
[Nexus 7 Android Development] daimosship:
Hi

Thanks for image.

I can't install picogapps because there is lack of space on /system - it has 640MB size and 80MB free after installing LineageOS 15.1.

Is there way to install them or expand system partition ?
[Nexus 7 Android Development] ud4:
Updated! Add audio configs, enabled triple buffer, move configs to /vendor, vendor warning now gone. Also I update gapps link because I did something with MindTheGapps and now it can be installed on new builds!
[Nexus 7 Android Development] laugeek57:
I will test your build again to try to make a Dolby Atmos version work ...;)

Because I use my N7 only to watch movies or series :laugh:

Dolby-Atmos-Axon7-Oreo_Unity_01.15.2019 :D

AudioFx-MotoMobility-0.58:highfive: Thanks Guitardedhero

Must flash in magisk v19.3 :good:

change dpi 581 :cool:
[Nexus 7 Android Development] laugeek57:
After installing gapps impossible to launch google playstore the page remains frozen ... :confused:

tested youtube vanced sound works but no image ...:crying:
[Nexus 7 Android Development] ud4:
I really don't know, if someone finds a solution, please post here. You can also try installing the old version of Google Play.
[Nexus 7 Android Development] laugeek57:
I also tested vlc and the videos are not fluid you reported resolution for the audio but the rest is far from functional but thank you for your efforts for this 8.1:highfive:
[Nexus 7 Android Development] Galaxea:
Before I try this ROM, can anyone advise if there are any ROMs/kernels that enable battery charge limiting via either the app (Battery Charge Limiter) or the Magisk module (ACC)?

I can't find anything that works on the Nexus 7. I would like to leave the charger permanently connected and only have it recharge between certain levels. The control file for this is not editable on this device it seems.
[Nexus 7 Android Development] john_sal:
I managed to get the listed gapps installed, but it's unusable. System partition is full. Size: 639MB, Used: 618MB, Free: 20MB. Thank you for your efforts.
[Nexus 7 Android Development] colt2x:
Gapps not working

Hi,

First, thank you, ud4 for this ROM, which i can use my Nexus7 2012 again. (Official Lineage 7 was not secure since a year, but your ROM has the latest security update package :) .)

But i see a strange behaviour and maybe someone can help.

So i installed the Mindthegapps package to the tablet, and for the first time, Play Store worked fine. But after starting the second time, i only got the Google Play logo, and it was stuck there.

Can anyone suggest a fix, or experienced the same? For me, the application cache deletion didn't help,neither the reboot, only a factory reset. Tried to use the OpenGapps, but it did not install.

Thanks in advance :)
[Nexus 7 Android Development] laugeek57:
Hello,

Same here starting the second time, i only got the Google Play logo, and it was stuck there :mad:

Tested without gapps and tried VLC player laggs and freeze on vidéos :crying:

Positive point Dolby Atmos and audio Fx mobility works fine :D

I stay tuned for next build if better :good:
[Nexus 7 Android Development] colt2x:
I managed to keep Play store running while i installed my stuff. it came up with unresponsive system many times (app installation took a lot of hours), but after i installed the Google Play services update, it became behaving normal. Until i closed the Play store, so now it does no work again.

It would be great if Google play would work on this build, because with an up to date 8.1 and working app updates, this device is fully useable again.
[Nexus 7 Android Development] colt2x:
...removed Gapps (re-installed the OS),and installed Aptoide app store. Not as good as Google's, and missing Play Services functionality, but works for app installation and update. This tablet is a secondary device for me, so don't need Maps, and a lot of stuff which is using Play, and there are alternatives for Hangouts and Gmail.

But will be good to have the full Gapps installed :)
[Nexus 7 Android Development] hussaint:
Consider installing f-droid for free and open source software. The stuff in f-droid is, in general, so light weight as the apps aren't bloated with trackers and other things to commodatise you.

Also install the brilliant Aurora Store from f-droid to browse and install from the play store. It will not give you Google Play Services, but many Play Store apps will function.

If you really need Google Play Services for a must have app that needs notifications then consider Microg.

I just got my Nexus 7 2012 out of a drawer for one of my kids. I've installed this rom (thanks op), f-droid and Aurora Store. I will NOT installs Gapps and will even not bother with Microg as it is not a main daily driver.

These devices were poor when they were released and are really showing there age. However, with lineage and no Gapps they are kind of ok again. (Again, thanks op).
[Nexus 7 Android Development] colt2x:
Yes, F-Droid is another opportunity. However, this device wasn't poor in 2012. 4 cores, 1G RAM? Was impressive back then!
[Nexus 7 Android Development] hussaint:
Apologies, you are right in terms of specs. What it was, if I remember correctly, was the update from KitKat to Lollipop. As soon as I got it, the first thing to be done was the Lollipop update, which was out by then.
[Nexus 7 Android Development] Dan Dar3:
[MENTION=5213841]ud4[/MENTION]

Just wanted to thank you and everyone else for making this available! (Y)

It's quite early to tell, but initial feel is that it runs better than previous Android 7.1 and haven't seen any issues so far.

Can't post any links to my blog post with the install steps yet (new member), but I will come back and add it later.

Thanks again!
[Nexus 7 Android Development] NoOne YouKnow:
dumb question

I know this is for [grouper], can someone help me understand why that matters? To be more clear, I have a Nexus 7 wi-fi 2013 [flo] and I am looking for custom ROMs. I just dug it out of the bottom of my desk and updated it to run NetHunter 2020.2 and I am 99.9% sure there are ROMs out that are more current than marshmallow(6.0.1, yeah real current). However, I can only find ROMs specifically designed for the 2012 version of this tablet.
[Nexus 7 Android Development] ud4:
https://xdaforums.com/nexus-7-2013/development You are welcome :)
[Nexus 7 Android Development] Dan Dar3:
Coming back with some issues I found following the initial install couple of of days ago:

1. USB debugging

Doesn't seem to work for me from Windows 10, doesn't recognize de device at all.

Enabled in "Developer options" > "Debugging" > "Android debugging" + "Debugging notify" with various combinations of "Select USB configuration" MTP, PTP with no luck.

Not a big issue as "ADB over the network" works very well, it asks me fine for the authorization.

adb connect IP_ADDRESS:5555

2. Google Play Store

It worked fine the first time I started, I was even able to install applications from the store. On subsequent runs it just hangs in the splash screen with the Play Store logo and that's it. Not sure if this still an issue with GPU.

06-11 21:49:19.104 1192 1262 D vndksupport: Loading /vendor/lib/egl/libEGL_tegra.so from current namespace instead of sphal namespace.

--------- beginning of crash
06-11 21:49:19.144 1192 1192 F libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 1192 (android.vending), pid 1192 (android.vending)
06-11 21:49:19.157 1192 1262 D libEGL : loaded /vendor/lib/egl/libEGL_tegra.so
06-11 21:49:19.160 1192 1262 D vndksupport: Loading /vendor/lib/egl/libGLESv1_CM_tegra.so from current namespace instead of sphal namespace.
06-11 21:49:19.185 1192 1262 D libEGL : loaded /vendor/lib/egl/libGLESv1_CM_tegra.so
06-11 21:49:19.204 1267 1267 F crash_dump32: crash_dump.cpp:298] failed to attach to thread 1192: I/O error
06-11 21:49:19.205 223 223 I /system/bin/tombstoned: received crash request for pid 1192
06-11 21:49:19.207 1192 1192 F libc : crash_dump helper failed to exec

It appears to work again if I Disable the app from Settings, enable it and then run it again. It asks me to accept the Google Play terms of Service, then it will work until next time.

3. No video render on own application using Google's ExoPlayer library, it just plays the audio with no video.

I/OpenGLRenderer: Initialized EGL, version 1.4
D/OpenGLRenderer: Swap behavior 1
D/vndksupport: Loading /vendor/lib/hw/gralloc.tegra3.so from current namespace instead of sphal namespace.
D/vndksupport: Loading /vendor/lib/hw/android.hardware.graphics.mapper@2.0-impl.so from current namespace instead of sphal namespace.
D/vndksupport: Loading /vendor/lib/hw/gralloc.tegra3.so from current namespace instead of sphal namespace.

Thanks again for you and everyone else's work on this, please let me know if there's anything else I could try or look into.

- Dan
[Nexus 7 Android Development] ud4:
Hello! The lack of support for HW Decoding is stated in the list of bugs. Unfortunately, I personally can't do anything about it (maybe someone else is more experienced than me). Thank you very much for the solution to the problem with Google Play. Also, thank you very much for correctly compiling a list of bugs along with logs.
[Nexus 7 Android Development] Dan Dar3:
Thank you, [MENTION=5213841]ud4[/MENTION]. No, I was just providing feedback for you and the others, I wasn't expecting a magic solution :)

I read the notes and i followed one of the repos where surblazer commited the triple buffering on 22nd May, is that where most likely the fix will be coming from?

Thanks, Dan.
[Nexus 7 Android Development] ud4:
Thanks anyway, surblazer = me. Unfortunately, the fix is not expected. (unless someone more experienced in the tegra platform takes a look at this)
[Nexus 7 Android Development] airheaded1076:
most recent build

Used to run aaopt's latest LOS14.1 (lineage-14.1-20181209-UNOFFICIAL-aaopt-grouper.zip), upgraded via dirty flash to latest (lineage-15.1-20200522-UNOFFICIAL-grouper.zip) and official AddonsSU from download.lineageos.org/extras ... and root didn't work. Tried again from clean install + official AddonsSU, and still didn't work. Now I'm using Magisk systemless root and it works with Root Explorer, Aptoide, etc.

Thank you for making everything happen!
[Nexus 7 Android Development] ud4:
Updated! Latest security patch, Various NFC fixes, Safetynet improvements.