yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] Legobricke:
Flashed today from 5.0.2 to 5.1..... Then factory reset....... and.................................

BOOOM...... Very impressed... Tab is running very smooth so far..... No Facebook yet...but Chrome appears to be very responsive....

So, whatever was messed up before have been fixed in this version.....
[Nexus 7 Q&A, Help & Troubleshooting] AndDiSa:
A factory reset is not needed, you can do a dirty flash and it's still fast :)
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
Only quirk I have noticed so far is I can't double pull down setting. Single pull for notifications OK, just can't get settings that way.

Weird, or I am just Doing It Wrong.

Sent from the aether.
[Nexus 7 Q&A, Help & Troubleshooting] bombadier:
Definitely improved performance with 5.1, now to try and enjoy lollipop which I really do not like
[Nexus 7 Q&A, Help & Troubleshooting] RusherDude:
Wow, 5.1 LP is actually faster than KK on my n7 (and KK was epicly fast on my n7..),

I am extremely impressed... not that 5.1 runs good, but that they really deployed that ****ty 5.0 version ruining devices for months. Come on Google, please do better QA and make us wait more if needed..

Edit: On my second N7, the ota ruined the system.. after the bootanimation there's an UI error for few secs and a black screen completely (which shows the power off menu if I hold the power button but nothing else).. and this was a completely stock N7, with bootloader locked and no root.

Any way to fix this locked n7 without unlocking the bootloader (and thus wiping)?

(sometimes I manage to get into a loop with the live wallpaper and a SystemUI crash over it, but nothing changes from there, nothing else on the screen (no bars, no icons, no nothing)..
[Nexus 7 Q&A, Help & Troubleshooting] stanley321:
I ran into the same problem with dirty flash. I just wiped it by factory reset and now all is well.
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
Same thing here.
[Nexus 7 Q&A, Help & Troubleshooting] tamanaco:
Anyone having performance issues using the Play Store to do batch updates? I find that installing one update at time is a LOT faster than clicking on "Update All" when multiple app updates are available. I also noticed that the overall performance of the N7 decreases after I use the Update All option. I have cleared the data and cache for the Play Store, cleared cache from the recovery and factory reset my N7 Wi-Fi 2012 running LP 5.1 rooted.

I find the overall performance of LP 5.1 to be better than that of LP 5.0.2, but still find that once in a while after running certain apps the overall performance of the N7 decreases. It all starts with slow response (lag) from buttons in the action bar. It takes a second or two for them to be highlighted and a "few" more seconds for the action to take effect.
[Nexus 7 Q&A, Help & Troubleshooting] MVPete1:
I've run into that Google Play Store issue when it's been connected to the same WiFi signal for a while. If I put it on Airplane Mode for like 10-15 seconds, and then reconnect it, that seems to enable me to do batch updates.
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
1 day in, not hating it yet, on my 2012 N7 32Gb WiFi.

Seems pretty decent, for my use ... mostly TapaTalk, Chrome, Feedly, Kindle, Zinio, Facebook.

Clean flash definitely better than dirty flash. Maybe dirty would be okay coming from stock 5.x ROM, maybe not.

"jeebus" but Facebook took *forever* to initialize, *seems* okay but too early to tell, for real. I also used Disable Service to disable all the 'mqtt' support services and the other notification services within FB. I don't use notifications/etc and don't see why it needs those constantly running if they're not used. Doesn't seem to otherwise affect use. Also saves battery consumption.

Chome seems to work okay once loaded but it certainly doesn't load "instantly"

Merely enabling wifi doesn't cause the performance hit on 5.1 that it did on 5.0.x, under my use. That's a help.

That is all, for now.
[Nexus 7 Q&A, Help & Troubleshooting] gsmyth:
If you dont use FB notifications and dont like all the permissions that is has access to, the below app is recommended. Basically the browser version but you can install it as an app, nice and light.

http://xdaforums.com/android/apps-games/app-facebook-browser-t2864561
[Nexus 7 Q&A, Help & Troubleshooting] cile1977:
I sideloaded 5.1 OTA and there were no problems and it is unbelievable improvement compared to 5.0.2! What did they do to make it fast again and why they didn't do it in previous version!?
[Nexus 7 Q&A, Help & Troubleshooting] tamanaco:
Thanks... I'll give your tip a try the next time I have a series of updates.
[Nexus 7 Q&A, Help & Troubleshooting] Legobricke:
As my Nexus 7 seemed to running pretty solid on 5.1, once I installed Facebook, it started to choke again just as it did when I was on 5.0.2.
[Nexus 7 Q&A, Help & Troubleshooting] FalconXtreme:
Is there a way to install the 5.1 OTA from windows?
[Nexus 7 Q&A, Help & Troubleshooting] Scooter30:
Lots of lag
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
Two days in and with some services disabled fb is not weighing the system down. User experience still superior to other options, IMO.

Facebook app disable service list

AnalyticsService

FacebookCalendarSyncAdaptorService

FacebookSyncAdaptorService

FbPushDataHandlerService

FbWallpaperService

GearCommunucationService

LockScreenService

MessageNotificationService

MqttPushService

MqttPushServiceInSeparateProcess

MqttReceiver

VideoAddsService

addendum 2015/3/23:

Ten more days and FB is still not a problem, 5.1 on my N7 still working well. No change to my FB disabled service list.

I've had Chrome take it down once or twice though, particularly with pages that had embedded video. I've turned DisableService against Chrome now and turned off 20 (of 38) services. This is way-early as I've only been targeting it for a few days but so far it's help.

Current Chrome Disabled Service List

MinDumpUploadService

NotificationService

NotifcationTransportControl$ListenerService

SandboxedProcessService 3 through 19.

Starts up much quicker and hasn't taken down my N7 in two days. Too early to tell if I'm missing something I care about though. I DO have Chrome sync'd from my N7 to my GS5 to my PC, and that continues to function, so hopefully I'll notice eventually if it is disabled.
[Nexus 7 Q&A, Help & Troubleshooting] bombadier:
Somethings are not meant to be, thought 5.1 was an improvement but very quickly its back to the lag fest that renders it unusable, going to go back to kit kat, wasted enough time on lollipop
[Nexus 7 Q&A, Help & Troubleshooting] fe98:
Same for me, dirty flashed 5.1 over 5.0.2 and it was a bit slower. Did a clean flash (whatever you call it) and it actually seems worse (if that's possible)!
[Nexus 7 Q&A, Help & Troubleshooting] Legobricke:
I've been pretty lucky on 5.1... But as soon as I install Facebook, it turns to crap.. So no Facebook...
[Nexus 7 Q&A, Help & Troubleshooting] iolinux333:
I've read through most of this thread, and the common theme seems to be Facebook=Lag. Maybe it ain't Lollipop that's the real issue here.
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
I think Faceboox, and Chrome, and possibly other apps may be highlighting a change in 5.x, or just doing something that was "gotten away with" before, dunno.

What I do know is that by disabling specific services of those apps their negative affects are reduced or eliminated, to my use.

I'm guessing there is something else fixable at the OS level, I just don't know whether it's worth anyone's time to find and code and test a fix for this device. {shrug}
[Nexus 7 Q&A, Help & Troubleshooting] Fobos531:
What kernel are you using? Is /data and /cache formatted to F2FS? My grouper runs flawlessy on 5.1. Chrome is ultra responsive.
[Nexus 7 Q&A, Help & Troubleshooting] fe98:
Everything's stock.

Can Titanium Backup restore data (only) for a specific app? I could try a factory reset again, and this time install my apps from scratch (as opposed to restoring the TB backup), but I'd need my data for them. Just a thought, really.

In any case, don't think I'll be spending too much time with the N7, maybe I'll try a custom ROM when they update to 5.1.
[Nexus 7 Q&A, Help & Troubleshooting] Fobos531:
I can't answer your question regarding Titanium Backup, but if you are bothered by LP lag, please try flashing latest franco kernel with /data and /cache formatted to F2FS. Before that LP would bring my Nexus 7 to knees, but now it is blazingly fast, stable and responsive.
[Nexus 7 Q&A, Help & Troubleshooting] fe98:
Thanks for the advice, will probably look into it on the weekend. Looked at TB but didn't find the option I was looking for (mightn't have made a difference anyway, I suppose).
[Nexus 7 Q&A, Help & Troubleshooting] gsmyth:
You should have the option to restore app data only as an option in titanium.
[Nexus 7 Q&A, Help & Troubleshooting] naoentrar:
It has been a long time since I was really happy with my Nexus 7. Like 99% of this device's owners, the user experience of the last versions of android have dramatically decreased the performance of the tablet.

Frequently 50% of the time I am using my tablet is full of lag. Sometimes, more than 30s are needed to get a response from the tablet.

I have tried all of the tips and tricks to solve the performance issues. I tried KitKat, All-F2FS, Lollipop 5.0.x, Lollipop 5.1, etc, etc...

Now I decided to try something else. I remember when I first bought the tablet it was blazing fast, never lagging, so I flashed android 4.1.2, cm 10. Until now, the tablet is the same as new. No lag, very very fast and responsive. I wonder if and when the lag will start to appear. I have more than 50% of flash memory filled, which should be a factor to reduce performance but it is still as fast as new.

I am very happy with this version of android. The user experience is much much better with a snappy tablet than an updated laggy one, so I am planning yo stick to android 4.1.2.
[Nexus 7 Q&A, Help & Troubleshooting] claptnei:
Totally agree, gone back to rooted 4.4.4 and its like having a new tablet.
[Nexus 7 Q&A, Help & Troubleshooting] code65536:
I've read in a number of places that the N7 is slow because it has crappy NAND.

And my experience is consistent with this.

Pay attention to where things are really slow. Launching an app that's not resident from memory. During disk-intensive activities (such as installing software; and to the person who posted that "update all" is slower--no, you're seeing a placebo effect, as all updates are done sequentially, not in parallel). Loading resources (such as graphics), or reloading those resources when returning to them after they've been evicted from RAM. Virtually every time I see lag, I can attribute it to one of these things.

And, frankly, there really isn't a fix for this. Just mitigations and porcine lipstick. 5.0's memory leaks coupled with the small 1GB of RAM meant there was more eviction going on, which exacerbated the problem. But otherwise, this is a problem that should be pretty OS-agnostic. It's getting worse not because the software is getting worse (memory leak bugs not withstanding), but because the NAND is aging.
[Nexus 7 Q&A, Help & Troubleshooting] claptnei:
I see 5.1 still has a memory leak - http://www.androidpolice.com/2015/0...fixed-internally-no-timeline-for-release-yet/
[Nexus 7 Q&A, Help & Troubleshooting] tamanaco:
I just read the same thing in a couple other places. Too bad that Google doesn't even have a "target" release date for this fix. Since the first LP release my N7 2012 has been plagued with lag. I noticed that my friend's N7 2013 with stock 5.02 does not suffer from same severe lag as my N7 2012 experienced when I had the same release installed. I believe this is due to his N7 having a more powerful multi-core CPU and faster memory that's able to more efficiently handle a larger number of threads simultaneously. (A thread that is hung "might" be isolated in one of the cores) He might have exactly the same problem, but the power of his CPU masks the Lollipop deficiencies.
[Nexus 7 Q&A, Help & Troubleshooting] francisdu09:
I also think CM 10.2.1 is the best rom for N7

Hello.

I’ve got my n7 since Christmas. I tried a lot of roms. After many flash (I always format all partitions and sometimes also do a factory reset, but I'm not sure I does something more), here are my personal conclusions.

All Lollipop versions I tried have lags, even the last 5.1 that I found worse than unofficials 5.02 like XenonHD which is better for me. I think everything is a little laggy under LP on the N7 (opening an app, when opening tasks list...).

I experienced almost the same in KK versions, even in F2FS, particularly when app are being installed.

For me the better is CM10.2.1 (the last version downloadable on Cyanogenmod plus the last OTA 10.2.1). It's incredibly smooth, no lag, tasks list in a second. Even when first run of a new system installation, while loading / installing dozens of app, you can do what you want, there are little lags but nothing boring.

All this in ext4, no need for f2fs, and with a kernel like MKernel a63.1, it runs at 1.5 G, it's near perfect.

Have a nice day

Francis

Sorry for my English, I’m French.
[Nexus 7 Q&A, Help & Troubleshooting] zinko_pt:
Wich m-kernel version for cm10.2, can you please tell me?

EDIT: got it, a6.3.1

Is there any app update limitation? In other words, will any APP not update to most recent version due to JB ROM?
[Nexus 7 Q&A, Help & Troubleshooting] francisdu09:
I didn't have any problem, but I don't use app like FB or other wich are often updated (I suppose).
[Nexus 7 Q&A, Help & Troubleshooting] gogol:
I am a bit confused, which 10.2.1?

Looking at this official CM download page:

http://download.cyanogenmod.org/?type=snapshot&device=grouper

Last 10.2 is cm-10.2-20131102-SNAPSHOT-M1-grouper.zip

Is it this one?

I want to try this as well :)
[Nexus 7 Q&A, Help & Troubleshooting] francisdu09:
I installed that version and after I updated via parameters/update to the last cm 10.2.1
[Nexus 7 Q&A, Help & Troubleshooting] zinko_pt:
Is it a matter of personal taste or do you find relevant advantages in that particular ROM.?

I'm trying the Smoothrom 5.3 with the m-kernel you mentioned (I think it doesn't support fast charge). It's a AOKP and the only nag I found is not being able to select the number of desktop pages.

Also, the kernel doesn't allow to setup minimum frequency to 100MHz, through trickstermod. It would improve battery quit a bit.

Other than this, my n7 it's snappy as it could ever be.
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Nexus 7 8gb and 32gb

Okay so I flashed Google's 5.1 factory images on two different nexus 7 2012 models. One was the first gen 8gb model the other the 32gb. They both use google now launcher but the 32gb seems to lag badly compared to 8gb one.

The only difference between them is the 32gb, my personal one, has twrp and is rooted other than some varying apps installed. Could fb or another app be what's slowing it down or should I try just factory resetting it and redownloading all the apps?
[Nexus 7 Q&A, Help & Troubleshooting] bombadier:
Some may say apps are to blame but I have found that using franco kernel has really made it a lot more useable so try flashing that
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Thanks, I may try that out after I try a factory reset.

It just doesn't make a whole lot of sense to me why only one of them is experiencing lag and the other isn't when I flashed the factory image the same way on both.
[Nexus 7 Q&A, Help & Troubleshooting] bombadier:
Mines is the 16gb version and is unusable, no idea what the issue is but google sure didn't test it on the grouper !

Was honestly going to to go back to kitkat but tried franco kernel and whatever wizardry he has worked, it has made lollipop usable again
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Yeah hopefully one of those options will work. I mainly just use it for reading and web browsing, but if none of that fixes the lag I may just try flashing CM12 or some other rom.
[Nexus 7 Q&A, Help & Troubleshooting] C0derbear:
Fb and Chrome def impact usability of other apps. Anecdotally seems related to some combo of the services they implement and the quantity.
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Yeah the moment I installed fb on the 8gb it did start to lag and best part you couldn't even use fb the app lagged so bad asking to be forced closed.

I guess just not having fb on my Nexus 7 anymore would be one way to solve the problem.
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Okay so I factory reset it, downloaded all my apps manually, and installed the bricked kernel.

It's almost like a brand new tablet and now I just have get google play books to stop being dumb and sync the other half of my books.
[Nexus 7 Q&A, Help & Troubleshooting] Fobos531:
I find this app as a really good alternative: http://xdaforums.com/android/apps-games/app-facebook-browser-t2864561
[Nexus 7 Q&A, Help & Troubleshooting] Smaril:
Cool it looks like a good alternative but I ended up downloading Tinfoil for Facebook since it was quicker to download and install from the Play Store.
[Nexus 7 Q&A, Help & Troubleshooting] leortez:
performance kk vs. lp

i was able to try stock 5.0/5.0.2/5.1 versions, I can say non of them are fitted for the nexus 7, everything takes alot longer to work at all.

despite it may start smoothly, as you start giving it regular use and downloading apps, lag starts to happen. everything else is just slower than what it was on kitkat 4.4.4. i hope custom roms make lollipop a better alternative, but so far I think kitkat is where the N7 should stay. i dont recommend switching to LP.

I can do say that latest release for slimkat 4.4.4 might be the best rom i have ever used on this device. very stable and fast, this one truly gives life to the N7.
[Nexus 7 Q&A, Help & Troubleshooting] zer0lab.dev:
after spending the last month and even more to deeply test all the Lollipop custom ROMs and the official firmware on my

tilapia

, I decided to go back to KitKat, so I flashed Paranoid Android 4.6BETA 6..

Something weird - really really weird!!! - is that CyanogenMod does not store any CM 11 nightly into his repository! It's absurd to me, isn't? I mean: tilapia does NOT have a CM 11 stable version, it does NOT have a milestone build, hell, at least last nightly!!! :(

BTW, my experience with Lollipop on tilapia is pretty sad.. other devices run very smooth as always on Lollipop, but tilapia seems to be old.. or maybe Google developers messed up something! I hope that the 5.1 build (when will be released for tilapia, don't understand why the 3G version of the device costs more bucks but it receives update later! always!) will be better, much much better, but I'm not so confident atm.. :(

The best Lollipop ROM is Resurrection, in my opinion: is the only one that even after I installed 20 applications was still running good! Not smooth as a KitKat one, but really really good!
[Nexus 7 Q&A, Help & Troubleshooting] xateeq:
I have found a weird solution to lag issue, turn on the battery saving option in battery settings, it will stop all background sync and uodates unless u open the app. Which translate in no fb chrome news stand BG crap sync = no disk usage (slow disk to begin with) = surprisingly fast tablet.
[Nexus 7 Q&A, Help & Troubleshooting] zer0lab.dev:
Yep I noticed the same thing when I used to run Lollipop on my tilapia, but, as you may understand, this is a totally unacceptable solution..! :banghead:

[ zer0lab.dev ~ stock on gpad7 ~ xda free ]
[Nexus 7 Q&A, Help & Troubleshooting] rbeavers:
* FYI Update *

After flashing Franco Kernel and using TWRP to format cache to F2FS everything is buttery smooth.

So go for it!
[Nexus 7 Q&A, Help & Troubleshooting] fe98:
Looks like I might have a faulty N7, tried this without any difference. Could you (or anyone else to uses Franco+F2FS) post some benchmarks so that I can compare? Maybe I'm expecting too much out of it?
[Nexus 7 Q&A, Help & Troubleshooting] Antar05:
Randomly shutting down

I held off on upgrading for a long, long time but finally got sick of the "update is available" notification popping up every five minutes (also was wondering if this wasn't causing any lag or performance issues, since my N7 seemed to have been getting slower since the update became available).

Upgraded a few days ago, and today the device is behaving very strangely and is completely turning itself off randomly. It's fully charged and boots right back up when I hold down the power button, and it only seems to do this when the screen's already asleep. Was just wondering if anyone else has seen this issue / knew of a fix.
[Nexus 7 Q&A, Help & Troubleshooting] genericfu:
you might try...

Sort of a blunt instrument, but you could try a factory reset if the device hasn't been wiped in a long time.

That said, if you're willing to erase the device and have adb set up, you might as well restore the factory image to see if there's any corruption in the firmware.

Or it could be a bug that Google will get around to fixing in 5.1.1.11111...:p

---------- Post added at 10:04 AM ---------- Previous post was at 09:39 AM ----------

it appears other people have a similar issue as you - check out Issue #2 in this thread for some suggestions.
[Nexus 7 Q&A, Help & Troubleshooting] bigstarrynight:
Just flashed factory image of 5.1 to Nexus 7 2012 mobile. So far its good. Super smooth, responsive. Life in the ol' dog yet.
[Nexus 7 Q&A, Help & Troubleshooting] sundog66:
OTA 5.1 on nakasig

Just got the OTA update 5.1 on my nakasig.

It runs far better then before. As 5.0 was a pain in the ass, 5.1 is abig step forward.

Still not completely responsiv like an overpowered new tablet but now it is far more fun to use again.

Frank
[Nexus 7 Q&A, Help & Troubleshooting] Drake008:
Flashed it complete new with 5.1 stock and it is slow as hell when it lays around waiting for something to do. Everything got wiped. Apps which are installed are WhatsApp and all google crap (which I want to get rid of somehow (mail could stay and the shop maybe,too).

So I tried different kernels without any luck.

So far this version is as bad as 5.0
[Nexus 7 Q&A, Help & Troubleshooting] xateeq:
For me the 5.1 update went from Best to worst to completely useless to i want to hurt some one.
[Nexus 7 Q&A, Help & Troubleshooting] Fobos531:
I have grouper and this is not the case for me at all. I use stock 5.1 + Franco kernel with /cache and /data formatted to F2FS. It's very fast and responsive. Have you tried that combination? Everything got wiped? Have you thought of making a backup? If you want to delete system apps(the google crap), root your Nexus 7 and download system app remover(https://play.google.com/store/apps/details?id=com.jumobile.manager.systemapp&hl=en).
[Nexus 7 Q&A, Help & Troubleshooting] krelvinaz:
Just walked back to 4.4.4 due to poor performance of 5.1 on my Nexus 7 2012 Wifi model. ended up making it pretty much unusable.

Back at 4.4.4 it is usable for what my wife uses it for and kids. Watching movies, playing some games. I don't use it.
[Nexus 7 Q&A, Help & Troubleshooting] rolldroids:
Battery drains on 5.1 for me ? come on Google ?
[Nexus 7 Q&A, Help & Troubleshooting] Sisqo:
Didn't tried 5.1 but i updated to ota 4.3, 4.4.4, 5.0.1 and it was going from worse to even worse... Wiping everything, unlocking bootloader all done but it didn't get better. Flashed the first firmware which the n7 came with, 4.2.2, and for a normal user seems the best version, almost no lag.. Any thoughts on a better firmware?
[Nexus 7 Q&A, Help & Troubleshooting] rbeavers:
On 5.1, after flashing Franco Kernel and using TWRP to format cache to F2FS , its about as good as when I got it 4.3 maybe.
[Nexus 7 Q&A, Help & Troubleshooting] steviemch:
I'm running Frank 5.0.2, Linux-Tegra kernel and Gravitybox and have no plans to update to 5.1 just now. My N7 on this combination is running as smooth as the day I bought it. If not smoother.

Sent by neural subspace transceiver node.