yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] AndDiSa:
[MENTION=6581116]akashkyh[/MENTION] please do not suggest to press vol+ and vol- in parallel to get into recovery mode because this combination in general in putting the device into APX mode !

To go to recovery mode, pressing vol+ and power is sufficient as is vol- and power to put the device into fastboot mode.

Regarding the different gapps-versions: it depends much what is included within the packages and how you are preparing the device. Using the OTA package, /system will be formatted without journalling which should provide some megabyte of additional memory. Flashing the gapps linked in the OP there should be still ~32MB of space left on /system. If you are flashing additional packages (SuperSU, Adaway, ...) in non systemless way, i.e. they will use space on /system or using other ('bigger') gapps packages you will run into problems ...
[Nexus 7 Android Development] CutGlass:
We used a minimal gapps installation to ensure the least background processes running as it is after all a rather old device :) However updates to apps move from /system to /data I believe and so do additional packages, I am not sure what the OP is suggesting with the beangapps, but recently there was a binary delta version of gapps which patches /system now that is a really bad idea for grouper as it's going to be filling up /system very quickly. Also the minimal gapps installation did have the advantage of avoiding the wizard crashing / set up issues reported elsewhere as the tablet is functional before installation so the wifi can be sorted out.
[Nexus 7 Android Development] k ahangar:
hi [MENTION=2188693]AndDiSa[/MENTION]

when i install this rom (7.1... Tilapia OTA-Package) (all versions) 2 RED lines are displayed(in picture). whats that? they arn't displayed in other roms.

[IMG="2 RED lines"]https://dl.xda-developers.com/4/1/1/4/4/6/4/IMG_20170416_181238.jpg?key=dh5JoBro3u6Nidqzh3LesQ&ts=1492351555[/IMG]

in this rom i heva more crash apps more time(in all versions).

and i downloaded latest version and installed that and Mini_Dynamic_GApps-7.x.x-20170121.zip... but it it stays on welcome to your nexus 7 3G page. i try to go on but it it says open app again and this Repeats.
[Nexus 7 Android Development] shaggyskunk:
Disregard the two red lines - it's most likely an issue from TWRP - It certainly has nothing to do with the Rom - It doesn't cause you any issues whatsoever.

I'm guessing but I suspect that it has something to do with TWRP looking for something that isn't there - The TWRP Devs are aware of the issue - But Again - It has ZERO effect on Flashing the Rom!
[Nexus 7 Android Development] AndDiSa:
[MENTION=7913386]k ahangar[/MENTION] if you update to twrp 3.1.x the read lines will dissapear ...
[Nexus 7 Android Development] aolins:
Hi [MENTION=2188693]AndDiSa[/MENTION], just installed the version from 20170410 over 20170207 - flashed smoothly without problems. Just, I am quite surprised that performance of the tablet now is very poor - like it were when no parrotmod optimizations were installed. Tried refreshing once again (wiping system, cache, dalvik cashe; installed open gapps pico and supersu), but performance is still the same poor. What could be a reason? I have Tilapia and with version from 20170207 performance was good.

---------- Post added at 07:46 PM ---------- Previous post was at 07:22 PM ----------

Yes, and I am also experiencing soft reboots now, too. This was never a case with 20170207 version.
[Nexus 7 Android Development] AndDiSa:
[MENTION=5773494]aolins[/MENTION] what kind of applications do you use generally? The problem with low performace might have two reasons:

1) you didn't trim the memory, so using trimmer would probably improve the situation ...

2) you are using several applications with a high memory footage. Due to zRAM we now have the possibility to run some more applications in parallel but when it comes to swapping / switching between large apps (Chrome, Maps, ...) this might slow down the device and in rare cases when swapping out / killing of applications cannot be done fast enough lead to a soft reboot ... You can try to play a bit with your zRAM settings to improve the situation.
[Nexus 7 Android Development] aolins:
Thank you [MENTION=2188693]AndDiSa[/MENTION]. I have a trimmer app installed and memory is being automatically trimmed once a day. With regards to apps, I have quite a lot installed on my tablet, mostly productivity focused (have no games at all). However, memory usage is quite high. How can I change zRAM settings? I would like to play with these...

By the way, I changed the governor from interactive to intelliactive and this seems to have improved performance a lot.
[Nexus 7 Android Development] capounet:
Kernel Adiutor allows to modify zRAM settings
[Nexus 7 Android Development] sziggins:
Nice work!

Hi,

Just installed you ROM 7.1.2 Grouper (Build 20170410), using TWRP 3.1.0, [April 15th] Beans mini GApps, SuperUser v2.79SR3 (systemless) and DATA formatted to F2FS. Sytem partition has approximately 38MB free .

I think F2FS might have improved the lag people mentioning, but either someone can test it . The TWRP version linked at OP does support it so [MENTION=2188693]AndDiSa[/MENTION] you can update the #2 post

About the lag, I always turn off the animations and/or forcing GPU rendering in developer's options.

So far so good.

Thanks for your work!
[Nexus 7 Android Development] fidoedidoe:
Installed 7.1 today...followed instructions carefully and all installed smoothly without a hitch (included superSU). I've installed this on my tilapia (not grouper) by using twrp for grouper and modifying updater.script within the rom zip file (I don't use cellular data).

Overall I'm very impressed .. performance feels good given its such an early build .. great work! No noticeable issues.
[Nexus 7 Android Development] AndDiSa:
[MENTION=1727875]len207[/MENTION] Converting f2fs file systems back to ext4 is a good point I didn't have in mind yet, but as far as I know Android 7.1 changed encryption scheme (from full disk encryption to file based encryption) and there is the chance, that f2f2 is not supported fully. So people having installation problems should try to give ext4 a shoot ...
[Nexus 7 Android Development] dbesoli:
On my experience, coming from 4.4 and fsf2 partition the installer wasn't working. After changed to ext4 the fsf2 partition it worked like a charm.

So, for sure, is better to start with ext4 partitions
[Nexus 7 Android Development] ThaiFighterGo:
I just installed 7.1 from Marshmallow. It quicker and feels better now. A little slow after boot, but after that it's good. Maybe this think can be used more besides a desk clock.
[Nexus 7 Android Development] akashkyh:
Guys how did u change from ext4 the fsf2?
[Nexus 7 Android Development] dbesoli:
from recovery: http://xdaforums.com/transformer-tf700/general/guide-convert-data-to-f2fs-twrp-2-8-t3073471

but the goal is to not use fsf2
[Nexus 7 Android Development] brmpfgl:
Is the date of the next release known?
[Nexus 7 Android Development] AndDiSa:
Most likely either today evening or tomorrow.
[Nexus 7 Android Development] 239:
Reverted cache/data back from F2FS to ext4 for now and tried 7.1.0_r4 yesterday. It feels even better than 7.0 and everything important seems to work fine (Netflix/YouTube).

Music app crashes on startup but I disabled it anyway. I think I will wait for the next release then and keep it for daily use until there is a good reason to switch again.

Thank you for supporting the Nexus 7 :cool:
[Nexus 7 Android Development] AndDiSa:
From time to time some applications are closing directly on / immediately after start up, unfortunately it's not really a crash where you can see something within the log. It looks to me somehow like a racing condition especially because starting the app again in >90% it's running without problems.
[Nexus 7 Android Development] adstraylight:
I've been looking at this, and have a hunch it's connected to surface flinger, and the logs show that it is often tied up with webview. The most common apps to crash for me are ones with a list or scroll of text and images. Google Play Newsstand I find is the worst for this.

I've also noticed that once an app is established in RAM as a background process, it is much less likely to crash. I'm no developer so can make no further connections, but I hope my experience may be of some help.

I was using the port of Carbon ROM, and have to say that your build is markedly more stable in this regard.

Possibly a difference in how it uses RAM?

Edit: The reason for my mentioning surface flinger is that for me the crashes are most common if I try to scroll immediately after opening one of my "bad" apps.

Edit Edit: I've also found that setting scrolling cache to 3 results in smoother scrolling overall with little impact on stability.
[Nexus 7 Android Development] brmpfgl:
Nice. I will wait for the new release then.
[Nexus 7 Android Development] Timpact:
After installation, there where merely no icons and no background at the main screen. I installed Chrome and tried to save an image (to use it as a background) but I get the error, that no sd-card is installed. Which ist correct, but I can't download anything, which is strange.
[Nexus 7 Android Development] Bakica:
You have to give permission for storage (for Chrome, of course)
[Nexus 7 Android Development] adstraylight:
Following my last, I've just discovered that things get even smoother if I disable HW overlays in dev options, but leave gpu rendering turned off...unfortunately this is a setting that doesn't survive a reboot or help with the occasional app crashes though.
[Nexus 7 Android Development] Timpact:
I did. It has the permission for storage.

It does work with Opera, even though at first it did not. I tried after a few hours and it worked. I don't get that, because I didn't change a thing.
[Nexus 7 Android Development] AndDiSa:
New build based on 7.1.0_r5 is uploaded. November security patches included (as far as applyable to Grouper / 3.1.10-kernel). You can download from the OP, or directly from here.
[Nexus 7 Android Development] adstraylight:
Great new build many thanks, with this one it seems smoother if I don't disable HW overlays....that's development for you...
[Nexus 7 Android Development] 239:
7.1.0_r5 runs smoothly so far, much better than on last official version. Too bad the camera doesn't work anymore though, was quite useful for QR codes.
[Nexus 7 Android Development] abhifx:
i am assuming navbar tuner is not available in this ROM too. if anyone can confirm, otherwise i am downloading it anyway
[Nexus 7 Android Development] breaktheblock:
First of all thankyou to [MENTION=2188693]AndDiSa[/MENTION] for providing this for us.

My level of knowledge = noob.

Last night I unlocked my grouper loaded TWRP 3.1.0.0 and then flashed the ROM and also gapps pico. I didn't do any rooting at this stage because I just wanted to do a quick test.

Anyhow I have had a few crashes even with the clock, however I wanted to ask has anyone else had any issues with Google Chrome?

I keep getting the aw snap! message which keeps asking me to reload (I also had this with KitKat and Lollipop) is this down to the limited system partition of the grouper? all i have on there is the rom, gapps pico and chrome?
[Nexus 7 Android Development] AndDiSa:
[MENTION=7044820]breaktheblock[/MENTION] you need to explain a bit in more detail your issues ... I am running Chrome on my device without any issues. From time to time it's a bit slow to start but otherwise it's running without any problems at all. In contrary I was using Opera and Firefox before but Chrome was running best.
[Nexus 7 Android Development] breaktheblock:
[MENTION=2188693]AndDiSa[/MENTION] I wish I could be more specific, I go on different websites, not the same ones and it "crashes" randomly is there anyway I can debug Chrome?

Thank you for any help.
[Nexus 7 Android Development] AndDiSa:
[MENTION=7044820]breaktheblock[/MENTION] Chrome is force closing or it's closing without any message? In the second case did you flash already the version from 04/10/2017 ?
[Nexus 7 Android Development] breaktheblock:
[MENTION=2188693]AndDiSa[/MENTION] Chrome sometimes force closes, sometimes it says "aw snap!" and invited me to reload the page.

This has happened to me on KitKat and Lollipop stock ROM's so please don't think it is something wrong with your ROM.

Currently I flashed 10th April 2017.
[Nexus 7 Android Development] aolins:
Hi guys, can someone explain the memory settings in performance control app? Or at least point to the place where such explanations can be found?
[Nexus 7 Android Development] ruedihofer:
Dear all, Is there someone who has an answer for my questions?

Do I need root to start the Performance App?
[Nexus 7 Android Development] oldman_58:
I am rooted and Performance app does not crash.

Speakers are working fine here , I use netflix and audio books without issue.

Battery charging fine power on or off I don't know what "side Plug means"

You may may be experiencing some hardware issues as far as the volume and charging.
[Nexus 7 Android Development] breaktheblock:
RE: Performance App, I am not rooted and it has never worked so I think you need root.
[Nexus 7 Android Development] ruedihofer:
Yes, right, I installed supersu and now it works! Thank you.

---------- Post added at 09:25 PM ---------- Previous post was at 09:15 PM ----------

Hi Oldman, with side plugs I mean the pogo pins mentioned here: https://xdaforums.com/showthread.php?t=1800099. Annoying, but I'm able to charge through them.

What is bothering much more is the volume control. I'm talking just about the media volume control for the speaker, which - after i had set it to a medium value - always automatically goes up to highest volume. (Looks funny when the slider is automatically sliding). The speaker works as expected for alarm sounds, but not for media (youtube). Everything works well with headphones! Any ideas? Is there a way to debug this [MENTION=2188693]AndDiSa[/MENTION]?
[Nexus 7 Android Development] AndDiSa:
[MENTION=8213790]ruedihofer[/MENTION] looks to me as if you have the volume button stuck.
[Nexus 7 Android Development] ruedihofer:
[MENTION=2188693]AndDiSa[/MENTION] Very unlikely since it only happens with the media volume slider, not with the ringtone or alarm volume slider.
[Nexus 7 Android Development] FearXo:
Setup wizard stopping

I installed the custom ROM on my Nexus 7 but when I go to set the device up it keeps telling me at the setup wizard has stopped do you know how I can fix this
[Nexus 7 Android Development] oldman_58:
I understand about the side plug now, thanks for the info. I just changed my USB power board in the tablet because I had an issue getting the device to charge at all.

It USB Power connecter cost less than $10.00 and took 5 minutes to install. I still have nothing for the volume issue, if it is just a single app causing the issue then perhaps the app does not work well on this device. If multiple apps are having volume issues you may want to replace the volume rocker/board they are easily found on e-bay or Amazon.

https://www.amazon.com/ePartSolutio...rd_wg=omUjS&psc=1&refRID=J4CF50HNMDQK5M7MT7Y9
[Nexus 7 Android Development] namerke:
Keep touching the 4 corners of the screen clockwise when the setup wizard starts, it will let you skip the wizard. Once you are in you have to connect to a wifi network from the settings app and then you can log in to the play store, set everything up, etc. At least that's how I did it.
[Nexus 7 Android Development] FearXo:
Thx that worked
[Nexus 7 Android Development] LeSpark:
Is there a way to enable the WiFi hotspot / tethering function? Using Tilapia.

(Great work, btw!)
[Nexus 7 Android Development] ruedihofer:
I have opened my device and unplugged the little connector to the side switches on the motherboard. Still same behaviour, even without switches attached ;(.

As I said, it's only volume from media affected, neither ringtones nor alarm. How to debug this? Is there someting like /proc/?
[Nexus 7 Android Development] oldman_58:
I would suggest a clean install, wipe system, data , cache then install the ROM then the approved Gapps and see if the issue goes away or get better.
[Nexus 7 Android Development] tpuserhp:
You might want to try a volume app to adjust the volume and see if you have the same issue. I use Volume in Notification app so that I don't have to use the volume button.
[Nexus 7 Android Development] Codster314:
Hello! Testing out the new version of this ROM! Everything is looking good so far. I noticed though the "Night Light" option isn't in this ROM. I thought this was enabled in all 7.1 roms? I can't seem to see the option in the 7.1.2_r5 version of this rom under Display.
[Nexus 7 Android Development] NeoPreacher:
i guess it isn't there as it causes massive lag like livedisplay does
[Nexus 7 Android Development] Codster314:
Ah okay. Does it though? I run it on my Nexus 4 (mako), which was released around the same time. I know the specs are a bit better on the Nexus 4, but it doesn't cause any lag on the Nexus 4 at all running SAOSP-N (7.1.2).
[Nexus 7 Android Development] apocalypsenzn:
=/

my wi-fi stoped to work...

will downgrade now and test other roms in the future.

Tilapia here.
[Nexus 7 Android Development] n3kf:
Is there anyway to get rid of Google Assistant? I tried turning it off in Google now, but it just randomly opens up and tells me it can't understand what I am saying. Thanks.
[Nexus 7 Android Development] konnarides:
stuck on setup wizard, keeps force closing, tried pressing 4 corners of screen but cannot get past it, any help ?

Edit: fixed by installing Android 7.1.x then booting device , once system is running I then re-booted into recovery and

installed gapps (I used opengapps arm/7.1/pico) and re-booted and all was ok. I then re-booted into recovery and installed

supersu and all is working fine.
[Nexus 7 Android Development] omfal:
I have 20170410 and Wifi cannot connect reliably to networks. Even if I disable it and enable it again, it cannot connect to my WPA2 networks from a Netgear router. It works with the network from a OpenWRT Netgear, but not automatically after sleep.
[Nexus 7 Android Development] konnarides:
Try going into advanced wifi settings and select 2.4ghz only,,, worth a try ...
[Nexus 7 Android Development] omfal:
Grouper has no 5 GHz radio at all. I cannot see any 5 GHz network listed.
[Nexus 7 Android Development] zys52712:
If your using opengapps, anything later than 4/13 fixes that issue.
[Nexus 7 Android Development] n3kf:
Seemed to get this to stop by disabling Google App.
[Nexus 7 Android Development] harry_m:
Luv this rom.

Is there any DT2W-enabled kernel available?

I use my Nexus 7 as some kind of "homeautomation"-panel (wall mounted) and DT2W would be really awesome to have.

Thx.
[Nexus 7 Android Development] beppemila:
Battery Drain + Performance Control app FC

I've just installed the latest Grouper version, 10/4 7.1.2, on a previous 7.1.1 same ROM version (can't remember the exact build).

The previous 7.1.1 was working flawlessy with great battery time.

On this latest version I'm experiencing a huge battery drain. Plus the app Performance Control keeps force closing when I try to open it.

I dirty flashed the 7.1.2 version and then wiped cache and Dalvik.

Anyone getting the same issues? Ideas for fixing them?

Thank you,

Giuseppe

UPDATE: I just realized the system was not rooted anymore after the upgrade. This solved quickly the FC issue for performance control.

I'm now twekaing the governor in order to see if the drain issue disappears.
[Nexus 7 Android Development] AndDiSa:
[MENTION=4793590]beppemila[/MENTION] you might want to have a look on the apps which are draining battery. In most cases there are two possibilities:

- on initial startup there is ART running in background which is trying to optimize the apps installed. Those processes might drain battery a bit, but this should reduce much on further usage

- after updating Google Play Services I noticed several times a battery drain due to syncing issues ...

Other than that I cannot imagine at the moment.
[Nexus 7 Android Development] beppemila:
Thank you for the hints.

'Miscellaneous' and 'Google Play Services' are on top of the drainers list.

'Goolge play services' also keeps Force Closing and I get very frequent annoying messages. Maybe thiscan be the reason for the draining.

How can I fix this force close issue?
[Nexus 7 Android Development] AndDiSa:
[MENTION=4793590]beppemila[/MENTION] try to go to apps/permissions and have a look whether some permissions are missing. Grant all permissions to play services they are requesting in that case the force closes should disappear.
[Nexus 7 Android Development] thierry+:
Hi AndDiSa.......i just recently updated my rom to 7.1.2 version 20170407 and i now find i cannot connect MTP wise to my windows 10 laptop i cannot see directories via Win explorer anymore whilst i could in version 7.1.1.

Win explorer does connect but it drops out almost immediately, it does try multiple times to connect judging by the amount of times it bleeps but all with the same result and then it seems to give up. ADB mode seems to work just fine and i can connect via the NRT app.

Any ideas befor i go back to 7.1.1
[Nexus 7 Android Development] AndDiSa:
[MENTION=8043045]thierry+[/MENTION] probably you need to allow mtp file transfer from within the ROM. Normally all Android devices running >=7.x do connect with "charging only" mode to the PC.
[Nexus 7 Android Development] thierry+:
Hi...i tried that before i posted, in fact i tried switching usb modes before selecting MTP mode and it did not work, however it is strange that i have just tried it again after reading your response and it worked...go figure!

Do you know why USB connectivity is so hit and miss with Win 10, the trick with switching usb modes in the ROM was also sometimes neccesary in v7.1.1? I ask this question whilst assuming that you are using a Linux machine for all your dev.

regards
[Nexus 7 Android Development] beppemila:
Thank you.

All the permissions were ok so I decided to take the hard way... factory reset and reinstallation of the latest 7.1.2..

Now, after rebooting the setup wizard keeps force closing...!? And I'm stuck at this screen 'Welcome to your Nexus 7'...
[Nexus 7 Android Development] namerke:
Read back some pages, already discussed, not a ROM but a gapps issue.
[Nexus 7 Android Development] beppemila:
[MENTION=2188693]AndDiSa[/MENTION] ok, solved the setup wizard FC but I still get the 'google services stopped' message on latest 7.1.2

Factory reset again and installed 7.1.1 march edition... same 'google services' issue... !?

Factory reset again and installed 7.1.1 february edition... (the one I was using succesfully).. same 'google service' issue!

Now I'm puzzled... what should I try?

Thank you again!
[Nexus 7 Android Development] AndDiSa:
[MENTION=4793590]beppemila[/MENTION] for me the 'google services stopped' issue is an indication of lacking permissions but I might be wrong. Did you probably restore apps / settings / ... by e.g. Titanium? Can you provide with a logcat, so one could analyze a bit better, what's going on?
[Nexus 7 Android Development] beppemila:
Log attached. it is my first log so let me know if it is ok for your debugging.

Thank you again for your kind assistance!
[Nexus 7 Android Development] AndDiSa:
I think the issue is the following:

...
04-25 15:50:58.069 E/AndroidRuntime(816): FATAL EXCEPTION: GoogleLocationService
04-25 15:50:58.069 E/AndroidRuntime(816): Process: com.google.android.gms.persistent, PID: 816
04-25 15:50:58.069 E/AndroidRuntime(816): java.lang.SecurityException: "gps" location provider requires ACCESS_FINE_LOCATION permission.
...

this exceptions you can find all over the log file.

I am guessing now, but can you have another look at all of the google services in the app / permissions (you need to enable system apps, too) whether Google apps have all their permssions granted they are requesting? Especially also Google App, Location Services, ...