[Q] Investigating really slow Nexus 7 2012 - Nexus 7 Q&A, Help & Troubleshooting

Hi,
My Nexus 7 2012 (very first batch) is quite often behaving really slowly. It is common for the settings screen to take 15-20 seconds to open. From the homescreen. With no running app.
Here is a video after I've reset everything to factory defaults, let it run and index things on its own for an hour and then manually upgrade a small app:
At other times, the speed is pretty decent for such a tablet. I just can't figure out why this difference. I've tried to check for wakelocks, tried a logcat and many other things. I can't make any sense from it.
Rebooting the tablet seems to have 50% chance of fixing the problem. So it's probably not a memory leak.
The tablet is rooted, on the latest build and I noticed that App Ops X survived the reset but no funky software is installed and the behaviour predates the installation of App Ops X. The network is not a problem here. The 2013 Nexus 7 of my wife works just fine and so does the Nexus 5 taking the above video.
How can I investigate this ? Is there an app that can run various reliable diagnostics to find out what kind of activity is causing trouble ? I tried to use logcat but the result is quite verbose and nothing rings a bell. I would really like to understand rather than just return it and wait or, worse, buy a new device.
Thanks.

Let me know if you find a solution my Nexus 7 has been really slow, Im rooted with CM11 M6 & KK GAPPS, TWRP 2.7.0.0 I dont know what happened to this tablet.

edarchis said:
Hi,
My Nexus 7 2012 (very first batch) is quite often behaving really slowly. It is common for the settings screen to take 15-20 seconds to open. From the homescreen. With no running app.
At other times, the speed is pretty decent for such a tablet. I just can't figure out why this difference. I've tried to check for wakelocks, tried a logcat and many other things. I can't make any sense from it.
Rebooting the tablet seems to have 50% chance of fixing the problem. So it's probably not a memory leak.
The tablet is rooted, on the latest build and I noticed that App Ops X survived the reset but no funky software is installed and the behaviour predates the installation of App Ops X. The network is not a problem here. The 2013 Nexus 7 of my wife works just fine and so does the Nexus 5 taking the above video.
How can I investigate this ? Is there an app that can run various reliable diagnostics to find out what kind of activity is causing trouble ? I tried to use logcat but the result is quite verbose and nothing rings a bell. I would really like to understand rather than just return it and wait or, worse, buy a new device.
Thanks.
Click to expand...
Click to collapse
droid4lif3 said:
Let me know if you find a solution my Nexus 7 has been really slow, Im rooted with CM11 M6 & KK GAPPS, TWRP 2.7.0.0 I dont know what happened to this tablet.
Click to expand...
Click to collapse
Mine too. Nexus 7 2012 16GB running PA 3.99 (JB4.3). PA Kernel and GAPPS, PA launcher or whatever one came with stock PA.
It takes upwards of 10 seconds to unlock frequently, even from a fresh boot, and without any security just a simple swipe unlock.
App drawer can take 10-15 seconds to open.
If I touch too much during these lag times I will often get a launcher not responding error.
I've about given up myself and am looking at other ROMs. Before I reflash though I may try a different kernel.
I'm downloading a few right now and I'll hopefully remember to report back my results.

Mine is suddenly unbearably slow too. It's a 2012 edition and I'm not rooted, running the stock software. I've tried clearing caches (app and system), doing a factory reset, flashing the factory image, but it just runs like a dog. When I switch it on it takes a few minutes to become responsive, and apps regularly say they will take upwards of 20 minutes to download updates - small apps too, about 3MB. The download issues are nothing to do with my wifi as the tablet is slow wherever I use it, and my Nexus 5 downloads the same things in a matter of seconds. Would love to know what I could do to fix my N7. I don't want to root it or flash a custom ROM - don't want to go down that route - I just want the great performance that I had from it before.

I was having the same issues described here as well after owning the tablet for awhile, and tried every custom ROM, kernel, and android version I could find for our device along the way, in the hopes of finding a solution.
The one thing that finally helped for me, was formatting the device to use F2FS file system format on all partitions. The initial setup is a bit tedious, as you will lose ALL data on the device, so first must back up everything, then restore it all once the device has been reformatted. But the payoff has been huge for both me and my wife.
Making this switch has made both of our tablets usable again, even enjoyable! It's well worth the effort put in to make the switch.
See this thread here http://forum.xda-developers.com/showthread.php?t=2678140, which has the modified recovery, files, and instructions needed to convert. It also helps to first make sure you can successfully use fastboot/ADB commands from your PC to the device, in case you get into any trouble along the way.
There's also an app now available for converting any rom to all-f2fs (prior to flashing), it's cheap and well worth the cost (about the price of a cup of coffee) https://play.google.com/store/apps/details?id=com.runnerway.converttof2fs&hl=en.

Related

Random Reboots / 4.2.1?

Hey guys... I'm still seeing some random reboots even after the 4.2.1 patch. Anyone else? Just curious if the patch is releieving this issue for some or if I'm unique. (It's disappointing to say the least... I hope it gets sorted out soon). My GN phone is having 4.2.1 reboot issues even with a custom ROM as well (though less than what I see with the tablet). Luckily, my wife's N7 has been pretty good (I suspect its rebooting on her while she's not around though, as both my other devices have done this as well).
My N10 randomly shut off (not rebooted) once so far after 4.2.1, but I only had 2 cases of random reboots back on 4.2
Yeah it's happened to me to.
Things that minimize reboots are removing apps and widgets that use Location Services. Disable location services as well.
I haven't had a reboot since I did a clean sweep. Thing like Maps will require you to go in and manually disable it. I found Facebook was one of the biggest offenders.
My old tablet (Transformer TF101) was plaqued with RR/SODs after the update to ICS. Really it still is but with a few tweaks and a custom kernel, I finally got it stablized. Why are you posting this here you say?
Because in that debacle, we found out a few things:
1, Asus will push out updates to help with the issue, but being that this is a Google "Experience" device, you should have a better chance of getting this fixed than we did.
2, I have heard repeatedly on almost every device that got 4.2 pushed that this is a problem. If you can stand it, hold out for a bit, I bet Google will get it sorted out (and not Asus).
3, we found that even though you think you are not having RRs, they may be occurring w/o your knowledge. There is an app in the market called Reboot Logger (can't remember off hand if it is a Root app or not) but it will show even the soft reboots that occur in the wee hours while you are asleep.
4, This is moved to Q&A
Good luck and I hope this gets worked out.
+1
Sent from my Nexus 10 using XDA Premium HD app
Ok... I'll stay patient. Really I was looking to make sure it wasn't something I did software wise in my setup. (I had to re-lock, to a clean reset of data/cache, finally get the .1 update, then unlocked again). (Still havn't rooted).
Someone mentioned google voice as having issues (which I suppose could go along with the location settings). I do have location off as far as GPS, but have been leaving it on for the other two checkboxes.
Thanks for the responses (and thanks for moving this thread to Q&A, sorry I posted in general!).

[Q] Any way to get the N7 to a state where I don't want to throw it against the wall?

OK, I know this is a pretty old tablet but I'd at least like to be able to get a smooth browsing, email, and streaming experience out of it; I'm not looking to be able to play games or multitask on it.
I'm running the latest version of lollipop and the N7 is rooted. Experiencing frequent serious intermittent lags/crashes, I mean like 60+ seconds can pass before the screen responds, apps hang, and the device occasionally will reboot itself. Other times, the tablet runs smoothly. Was hoping that update to lollipop would resolve some of this but, if anything, it's gotten worse. I've tried the usual "fixes" of clearing the cache, forcing TRIM, closing apps manually, and even did a factory reset + cleared all caches and still the problem persists. The problem seems to occur more frequently when I run apps like the Chrome browser, which I now avoid using. Not really sure if there is a decent process documented on how to troubleshoot these types of issues to find the root cause but the tablet is presently very annoying to use at best.
What I'd like is either: a) getting some help in determining what the root cause of the issue is, or b) switching to a ROM that doesn't have these problems.
Any thoughts, suggestions, or pointers to an in-depth troubleshooting article/thread?
If you find a solution, let me know.. I've tried combos of lollipop and kernels, kit Kat and kernels.. f2fs etc.. I keep mine as a docked alarm clock and ereader for bed.. but even that takes forever.
- Sent from Spaaaaaaaaace
I don't know if this will help, but I book marked it for when I update.
http://forum.xda-developers.com/nex...ndroid-5-0-t2999635/post58567333#post58567333
I gave up and went back to 4.4.4. I can FINALLY use my tablet again...
It's the flash memory in them. It's just degraded over time. I went back to 4.4.4 and it was excellent for about a week. Then it turned useless again.
That guide posted above seems to be a placebo other than the animation's being turned off. The n7 is absolutely fine after a fresh wipe, or a factory reset. For a week... I went through the guide and the only things it had that would make a real difference was animation speeds. I'll see how it does in a week.
- Sent from Spaaaaaaaaace
hi! I was having the same problem, my n7 was super laggy and sometimes rebooted itself. that was just after uprading to lollipop 5.0.2. it kinda solved after rooting, doing a factory reset and installing lollipop 5.1. I hope it helps!
4.4.4 stock with all-f2fs rom. M-kernel r69. Both can be found here on xda.
This is how I got mine running smoothly again, even after trying several lollipop roms including 5.1.
Sent from my Nexus 7 using XDA Free mobile app
CM12 is not doing any better, I hope 5.1 could make a difference.
Stock 5.1 + Franco kernel with /data and /cache formatted to f2fs works beautifully for me. No problems at all.
I had all the same problems (and more) you and other spoke about when (a structure that holds back water and sounds like Ham) Google hounded and hounded me to install LolliCrap 5.02 (I ignored 5.0, which somehow disappeared). I HATED my #1 Nexus 7 16GB v2012. I also have a #2 Nexus 7 32GB v2012 (running HAPPILY 4.4.4) which I am still ignoring for "ham" good reason to install 5.02, an I never will install it or the latest 5.1!!
I have been exploring reinstalling the stock 4.4.4, but first I want know how to turn OFF future Google OEM Android updates and stop the "ham" badgering that there is a "new update available. But in the mean time, want to make #1 N7 useful again, I bite the bullet, backed up everything and did a factory reset and reinstalled everything. Even though I still HATE LolliCrap, my #1 N7 16GB is running pretty snappy again though some apps absolutely DON'T LIKE LolliCrap OS and are hanging and hanging and slow and crash (lazy Devs that aren't fixing whatever is causing that with 5.x). Apps I've noticed that are horribly slow with 5.x are Outlook, Skype, Yahoo Mail, Weather Underground, Drop Box, others
So, do a full reset and reinstall after backing up your data. You're gonna lose everything anyway when you Root and Boot Unlock to install an older version of Android or a custom ROM.
Hope this helps.
Glad to see another post here on the very topic I'm looking for. I'm currently running stock 5.1, completely stock, and it's just as bad as 5.0 was. I've read up enough to realize the issue is a flaw with the device, but am going to try and devote an evening or 3 to making this thing work before I completely give up on it. My goal is a minimal, feature poor but reasonably fast device for browsing, email, and some specific apps (a game or 2 and the Harmony Remote app)
Below are the areas I'm looking at, if anyone has advice or tips on any of these I'd really appreciate it:
Custom Kernel- Franco or MKernel r69? Need to investigate
F2FS - This is probably the best shot
Custom ROM - May stay stock, but if anyone knows of a lean, limited feature bloat ROM let me know!
Lightweight Browser - Can we get the original "Browser" App to install? Other options?
Basic EMail Client - not sure about this one..
The moment I saw the thread title, I knew I was not alone on this.
I remember the behavior first started with 4.4.4 actually, refusing to turn the screen on sometimes etc. I tried CM12+f2fs+mkernel 69 and it went well for a few days, then stuff broke again. I first suspected it's a RAM issue because I have two users running, but it constantly has about 150-200MB free (counting the cached apps, 400+ otherwise).
I guess I'll try slimkat 4.4.4 + f2fs modification, hope it can get the tablet running again.
Reapman said:
Glad to see another post here on the very topic I'm looking for. I'm currently running stock 5.1, completely stock, and it's just as bad as 5.0 was. I've read up enough to realize the issue is a flaw with the device, but am going to try and devote an evening or 3 to making this thing work before I completely give up on it. My goal is a minimal, feature poor but reasonably fast device for browsing, email, and some specific apps (a game or 2 and the Harmony Remote app)
Below are the areas I'm looking at, if anyone has advice or tips on any of these I'd really appreciate it:
Custom Kernel- Franco or MKernel r69? Need to investigate
F2FS - This is probably the best shot
Custom ROM - May stay stock, but if anyone knows of a lean, limited feature bloat ROM let me know!
Lightweight Browser - Can we get the original "Browser" App to install? Other options?
Basic EMail Client - not sure about this one..
Click to expand...
Click to collapse
1. For some reason Franco never boot my tablet for me...I've been using mkernel r69 and that's working really well.
2. Yep, a must.
3. Tried several custom roms and came back to stock.
4. Opera
5. Stock email, the one can be downloaded via playstore?
Rastapop with Franco kernel runs great to me. Keeping this thing alive.
VintageGuitarz said:
[...] I have been exploring reinstalling the stock 4.4.4, but first I want know how to turn OFF future Google OEM Android updates and stop the "ham" badgering that there is a "new update available [...]
Click to expand...
Click to collapse
To remove the update questions you got to root the device and disable the SystemUpdateService service of Google Service Framework and Google Play Services applications (don't know, maybe only Play Service one is really required, but better block both of them).
To do that use this application http://play.google.com/store/apps/details?id=cn.wq.disableservice
Reapman said:
Glad to see another post here on the very topic I'm looking for. I'm currently running stock 5.1, completely stock, and it's just as bad as 5.0 was. I've read up enough to realize the issue is a flaw with the device, but am going to try and devote an evening or 3 to making this thing work before I completely give up on it. My goal is a minimal, feature poor but reasonably fast device for browsing, email, and some specific apps (a game or 2 and the Harmony Remote app)
Below are the areas I'm looking at, if anyone has advice or tips on any of these I'd really appreciate it:
Custom Kernel- Franco or MKernel r69? Need to investigate
F2FS - This is probably the best shot
Custom ROM - May stay stock, but if anyone knows of a lean, limited feature bloat ROM let me know!
Lightweight Browser - Can we get the original "Browser" App to install? Other options?
Basic EMail Client - not sure about this one..
Click to expand...
Click to collapse
In my experience best custom ROM is Resurrection Remix.. I tried all tilapia Lolllipop ones except AICP, which now I'm very curious to try.. but I flashed Paranoid Android 4.6 BETA 6 yesterday and I will not change it until Google releases 5.1 firmware for tilapia too and people say this build is finally smooth and nice (well, too much hope, I know.. Lollipop will never be smooth on Nexus 7 2012, I fear )
Sofar I'm about 24 hours in using SlimKat with F2F2 (followed this post here - http://forum.xda-developers.com/showthread.php?t=2678142) using "Browser" that it comes with, and so far just GMail. Initial findings are very positive, it's quite fast, but I'm sure that could change.
Next steps (thanks for the ideas all!):
Install Opera
There's actually an update to SlimKat, but i'm waiting to see how the tablet performs as is without touching anything
Install and configure EMail client from Play store
Kernel - looks like this version of SK already uses the M Kernel so should be good there
There is an updated, F2FS modified version of Slimkat in that thread around page 90 or something.
I'm using that at the moment and it's been fine I guess.
Word of warning: recents menu is bugged to secondary user acounts. Only shows apps if they have been also installed for the primary user.
Yeah, I'm going to give myself a week or so on this older build and make sure it's stable before doing that. Definitely some stuff I miss from Lollipop in this, but if this is enough to breath new life into the tablet.. I'm willing to accept that loss :good:

[Q] Best choice: Cyanogenmod 12, or wait for Android 5.11?

Hello.
I enjoy my Nexus 7 2012 (Wi-Fi 32GB) tablet very much, when it is working properly and, unfortunately, that hasn't been often for some time. Android 5.02 helped a bit and the tablet is currently running 5.1 from a OTA update, which seemed to help a bit more. Android 5.1.1 has been mentioned however, I am not sure my issues will be helped by an update. For this reason, I am here to ask for advice or suggestions as to what I should do next (if anything!)
My first issue was the battery. The battery only lasts four hours per charge and since it is the original from 2012, I have ordered a new one and am awaiting its arrival. This tablet was a gift and whatever warranty it had has most likely expired so I am not concerned about invalidating a warranty. I hope that a new battery will make a big difference.
However, it is the second problem that is really annoying. The screen on my tablet freezes often, in any program and at any time. After charging the tablet, I've learned that it is best to restart the tablet to prolong the amount of time before the tablet freezes for the first time. Reading an article, for example, is a problem as I can read the first page but when it is time to slide the screen up to scroll to the next page, I am at risk of the screen freezing and it definitely freezes before page three. When typing a comment on Facebook or Twitter, etc. either they keyboard freezes while typing or if I can type the comment, the screen freezes before I can press the send key. I have other ways that are less portable to access these types of programs however, portability is the reason for a tablet. Using the tablet as a reader, I usually do not have any problems swiping page to page for usually as long as I'd like (although the swiping motion is a potential problem outside of the reading app.)
I backed up the tablet just prior to the 5.1 update and reset it to factory settings and for almost a week the difference was amazing. However, even with 5.1, the tablet is back to freezing again. Regarding the 32 GB internal storage; the actual available space after the OS is 28.17 GB and my available 23.90 GB. Due to the tablet's lack of response, I only reloaded a small number of apps and then, with the screen freezing multiple times in the four hours the battery allows, I uninstalled even more apps to get where I am now; I have never exceeded 50% at any time. In a browser, I often have more than one window open, yet it is the only program open. Sometimes, Facebook and Messenger are open at the same time but not always. If I get an incoming update, such as CNN, etc. if I open that for a few minutes, I'm risking another freeze. I am continuously aware of what programs are open and close them with the bottom square icon on my tablet. I have two frequent errors: SYSTEM UI is shutting down and the Process System is shutting down and they happen often. I am using Nova Launcher and the other Launcher on the tablet has been force stopped. I should probably note that I did the cache cleaning process two different times before I reset the tablet to factory settings.
Would going to something like the Cyanogen Mod be of assistance with this situation? There is an Official CM12 Mod available for this tablet however, the article I am referencing is from January 2015, written by Vinod Yalburgi titled, "Update Nexus 7 2012 (grouper) to Android 5.0.2 with CyanogenMod 12 official ROM." The tablet is already at 5.1 though and, as you have surmised correctly, I am not fluent in Mods of any type so I am unable to determine which mod is the best in this situation or if a mod is not going to be the right answer. I am open to rooting the tablet; the huge benefit I'd appreciate is the ease of creating a full back-up.
Is there another, more appropriate solution? My main concern is that if I wait for Lollipop 5.11, whenever that might be, it will not improve the issue with the screen freezing and I will have waited longer and ultimately gotten nowhere. Going back to KitKat 4.4 as I have read others have done is not appealing but if is the best solution . . .
Thank you for your patience with all of these details. I am hoping that with this info and all of the experience here, you can help me move in the right direction. Your time and any and all of your helpful suggestions are appreciated! This tablet can still work very well and as it was a gift, I want to make it work (on the days I do not want to hit it with a hammer!)
CShirey
I had the same freeze ups after the 5.1 update. I reset it 3 times to no avail! So I went back to KitKat 4.4.4. This lollipop is a big SUCKER, if you ask me... Google has screwed the pooch on this one.
? Take me to your Leader ?
Not the option I was hoping for but maybe the solution!
eLCruz said:
I had the same freeze ups after the 5.1 update. I reset it 3 times to no avail! So I went back to KitKat 4.4.4. This lollipop is a big SUCKER, if you ask me... Google has screwed the pooch on this one.
Take me to your Leader
Click to expand...
Click to collapse
Thank you for your suggestion! Does your tablet work well with KitKat 4.4.4? Any problems with freezing and battery drain? I have continued on with my research on this trying to determine what other owners have done in a similar situation. Lots of complaints but not a lot of answers, so far!
CShirey
General surprise at the lack of helpful replies!
I am grateful for the reply I received however, I am disappointed in the general lack of interest. Whenever I come to review posts here, I see that generally, most posts receive multiple answers. I am in the right forum . . . Is my question considered to be too simple . . . or did I miss an unwritten rule? Thanks.
CShirey
Sorry, had turned notifications off and forgot. It's working smoothly on 4.4.4! Should have never updated, IMO. I believe lollipop will be Google's windows vista... Hope every thing works out.
?Here, there be Whales...?

Freeze on charge

I recently rooted and unlocked the bootloader on my Razr M and installed a nightly build of CyanogenMod (I like to live on the edge, I guess.) The first week or so with it was going great, no issues as far as I could tell.
Then I installed a social application that requires GPS location. I noticed that the first time after enabling this the phone would freeze when plugged in to charge. It would freeze to the point where hitting the wake up button wouldn't even activate the screen. Not always, but it has happened on several occasions. So now whenever I charge it (daily), I have to force reboot (hold down Up, Down, Power in that order.) Sometimes it'll even go through the process of "Optimizing Apps" as if they were all just installed.
Firstly, has anyone else experienced this? And if so, is there an "easy" workaround? I can't quite pinpoint how to reproduce the bug, though I've got 3 different Cleaning applications installed that are used daily. That in mind, it's unlikely this is a memory leak bug.
Second, if there's no "easy" workaround, when can one expect the next Stable build of CyanogenMod, if ever? Is it still in development? I see that the last Stable release for this phone was in 2013. It seems like I'll have to downgrade to an earlier build, but just want some input before I do it.
Thanks much in advance
Sounds like an issue with the app, not the ROM. You said yourself that the issues started AFTER installing that app. So, delete that app and report back. Also, a lot of those cleaner apps out there will just bork your phone if you're not careful.
Sent from my Nexus 5

New Nexus 6P User, problems out of the gate

So like the title says, I'm a new Nexus 6P user, and I had problems out of the gate.
I bought the device 2nd hand from a guy off craigslist, after my S6 edge started over heating after I had the screen replaced (don't buy Samsung "edge" phones, I know your careful, but on the off chance you drop it, your in a world of trouble).
I tested the phone, before I bought it, it appeared pretty much brand new, everything worked. When I got home, and hard reset it again for good measure all hell broke lose.
After a hard reset the phone wanted to update to build 19 something. After the update and a reboot, the phone app kept crashing before I could finish the setup process. The only thing I could do is factory reset it again. This appeared to clear up that problem. I did the near by device thing, and restored it from what Google could find out about my S6 edge. I wish it was more of a restore like what you can do in the iOS world, but it's better then what we had before so it's cool. I noticed that Chrome would crash everytime you tried to use it only in less I uninstalled the update. After I got the phone to the point where I wanted it, I thought I was free in the clear. When I started trying to use music apps, they all crash. Apple Music, Spotify, Soundcloud. Then I noticed YouTube also crashed the same way. When I tried to make a phone call, the phone app would crash too... So the phone was useless. I downloaded the SDK and the most current build which I think was 20 something. I followed a guide on here and formatted the phone reinstalling everything around build 20. The only thing this fixed was the phone issue.
I could now make phone calls without it crashing, but I was in the same boat with some applications working, and the same ones that didn't work not working. I flashed this phone 5, or 6 times, with the last time me formatting the userdata. I read that it wasn't a good idea because it could lock me to only 32GB ( I had a 64GB version), but after I did the flashing along with the usedata format, I still had 64GB of useable space, however I still had the same issue with the same types of applications crashing. I tried older builds, same issue (also the older builds all had the problem with the phone app crashing to the point that the phone wasn't usable).
I ended up sending the phone to the manufacturer, which appears to be in the same metroplex I live in. Hopefully they can find a hardware problem under warenty and fix it. I'm making this post to see if anyone else ran into similar issues, and if anyone knows if this is a hardware build issue, that was hopefully resolved.
I'm sorry to be so long winded...
Is the phone rooted and running a custom ROM?
Pappy35 said:
Is the phone rooted and running a custom ROM?
Click to expand...
Click to collapse
Everything appeared to be stock, I don't know if it was rooted before, but when I was finished with it it was stock, I even locked the boot loader again (it was locked before I started flashing it)
vmiyoshi said:
Everything appeared to be stock, I don't know if it was rooted before, but when I was finished with it it was stock, I even locked the boot loader again (it was locked before I started flashing it)
Click to expand...
Click to collapse
How much did you pay for it?
Sent from my LG-H830 using Tapatalk
RidinNerdy said:
How much did you pay for it?
Sent from my LG-H830 using Tapatalk
Click to expand...
Click to collapse
I paid 4 for it...

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