yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kjgratys:
Help Me: Random Reboots

Hi all,

I have been running Cyanogenmod 12 for awhile without any problems at all on my Tab Pro 8.4. However, I recently upgraded to Cyanogenmod 12.1 and have been experiencing random reboots. Sometimes I can go for hours without one, and then all of the sudden it can happen ten+ times in a row (I would consider it a boot loop because it never last long enough for the OS to actually start). Then after a bunch of reboots it can start and be stable for 5 minutes, or 5 hours, before another similar reboot episode. Sometimes when it reboots it acts like the cache/delvik was cleaned (ie it optimizes all my apps on reboot). I tried clean flashing my old Cyanogenmod 12 and the problem still persists. One thing I did do was wipe everything but the external_sd before flashing the ROMs. What am I doing wrong? Thank you all!

Kevin

---------- Post added at 09:18 PM ---------- Previous post was at 09:15 PM ----------

Part of me thinks it is an app causing the instability since the ROM runs fine before I start installing apps. BUT what could the app be? Is there a way of finding out what is causing the crash? Could it be a rooted app such as greenify or adaway?

---------- Post added at 09:58 PM ---------- Previous post was at 09:18 PM ----------

Sorry for multiple posts. I've been looking into this problem for awhile but I think I have an idea. Perhaps the tablet is overheating. It does feel hot when it goes through these episodes. One thing for sure is that the ROM version doesn't affect it. Whether its CM 12 or CM 12.1. The problem persisted after fresh/clean flashes of the two respective ROMS. That being said, I didn't have this problem until I wiped everything (cache, delvik, data, system, internal storage) and flashed CM 12.1. After that the problem started and I figured it was an unstable new ROM. I wiped everything again (minus external SD) and reflashed CM 12. But the problem persisted.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
People would have a much easier time helping you if you had logs...
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
Try www.apkmirror.com for official/latest google (and others) apks...

Like Google Calendar HERE
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] chengjih:
Encrypt tablet?

Hi, I just got this device on Tuesday, and have installed the 2015-04-28 Nightly on it.

I want to encrypt the device, but when I hit the "Encrypt" button and reboot, it seems to be stuck in the CM 12.1 boot logo. I can power cycle the device to get it back, but it obviously isn't encrypted.

Is this a known issue, or am I missing something?

Thanks.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
So now that we have selective DPI adjustments built into the ROM Settings > Display & Lights > LCD Density. Is there anyway to increase the number of 'spaces' for icons on the homepage. I've switched from the default 320DPI all the way down to 240DPI but I can't have anymore icons in a row than before so it seems like a waste. I do use the GNL as opposed to Trebuchet, would that be the issue? Any chance that there will be a setting baked into the ROM to customize the row/column icon density?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] mgp53:
Try apex launcher
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
I'd rather not use a different launcher and if I did I'd use Nova which I've paid for. It just seems silly to allow DPI adjustment but not tweak icon placement. Here's to hoping this becomes an option baked into the ROM.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
Guys, HW + and buffering (rutube-vkontakte) fix in the latest builds?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
GPL is a closed source Launcher, they can't tweak much if you use it.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] palmbeach05:
Reading the first post??? No one ever does that! :p jk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] csrow:
Video buffering wasn't fixed in 4-29.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] SilentEYE:
Just a small tutorial for all the people who want to try a dirty upgrade from CM12.

- Do a nandroid backup and titanium backup (or similar)

- download latest cm 12.1 and gbanks gapps

- delete your google account

- delete cache of playservice and playstore

- reboot into Recovery: install CM 12.1 and gapps

- reboot and re-create your google account

- test your apps. if some app is not working well restore your titantium backup or reinstall the app from playstore

and most important thing:

Do not post bugs if you did a dirty install.

good luck :highfive:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] pairdime:
Used the built-in CM updater to go from 04-23 to 05-03 and it worked fine, scrolling seems smoother now :good:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] jlvlawrence:
Which recovery do you use? The built-in updater always fails for me in TWRP.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] pairdime:
I use TWRP. Sometimes it works, usually it doesn't, I don't know why. This time it worked.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] SoberDogs:
I'm looking primarily for better battery life. Are you guys able to get more than 7h~ sot with CM12.1 and a rooted greenify and everything? Or is battery life not something that improves significantly? I searched through the thread, and only two people have commented on battery life (better for one; worse for the other).
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
I definitely don't get much more than 5 hours, same as under cm12, which was less than stock. I don't do anything about it though, no greenify... And lots of standby time. I basically charge it every night or second night besides my phone, doesn't bother me.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] jlvlawrence:
I can't compare battery life on CM12 to stock. Upon purchasing my tablet, I immediately wiped it and flashed CM11. I generally get around 5-6 hrs of SOT over a period of 3-4 days. I can I've with those numbers. One weird thing that I have noticed though is that the tablet charges at a very slow pace if I use the turbo charger that came with my nexus 6. The Samsung charger that came with the tablet works just fine though.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] chrisrf:
I don't think this tab is quick charge enabled
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
And that's a very sad thing. Onlt weakness of this tab is battery life/charging time (using CM, since stock rom is another weakness IMO).
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] SilentEYE:
The new CM changelog is reporting that f2fs is now available for our tab!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] jlvlawrence:
I know this tab doesn't support quick charging, but it shouldn't charge this slowly. The turbo charger charges my Galaxy Nexus and galaxy s5 at a normal rate. But it's incredibly slow with this tablet.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] MacFett:
I used to have charge problems and fixed it by opening my tab unplugging the battery for 2 minutes, plugging it back in and closing it up again.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
I install build 20150507. Not see f2fs, all sections in ext4 and vfat...

terminal - mount
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] the Doctor:
I take it you didn't read the comments in the gerrit code review for the f2fs item in the changelog yesterday. Pertinent information there.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
next build f2fs http://review.cyanogenmod.org/#/c/97537/
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
So we just need to flash next build to use f2fs or we need to format the system and data to f2fs before flashing rom?

Cheers
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] crpalmer:
There is no recovery that supports f2fs. You need one that does support f2fs to be able to move to f2fs without requiring some serious command line knowledge.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] arrrghhh:
TWRP should support it... perhaps not for the mondrianwifi (yet). I need to look into it and perhaps bother [MENTION=2638973]bigbiff[/MENTION].
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] gscollier:
It is a common complaint of CM ROMs. They seem to be more susceptible to charger/cable combinations. I was getting similar results until I used Ampere or CoolTool to track down which combos work best. It is certainly possible to get more than 1 amp (1.4 or 1.5 with certain charger/cables) and I could not live without CoolTool to keep an eye on the current.

I was noticing an actual drain using the tab while plugged in with certain cables that are now in the bin. Persevere :)

I have a battery pack which is very moody. Usually when I first plug in the current is negative, unplug and after a couple of seconds plug back in and it goes to well over 1 amp. Without Ampere or CoolTool I would not have know what is going on. CoolTool needs a custom label to get the current, I can provide details if needed.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] palmbeach05:
I see someone was paying attention to the f2fs development over on our msm8960s. It should work with TWRP once the code is implemented into the project.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
Need format only data and cache to f2sf?

Work for me)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] arrrghhh:
Yep, seems TWRP already supports f2fs for the mondrianwifi.

http://xdaforums.com/showpost.php?p=60598037&postcount=217

Thanks [MENTION=2638973]bigbiff[/MENTION]!!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
Does the official CM12.1 for our mondrianwifi has F2fs support in kernel and fstab for data and cache?

Cheers.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
So to be clear, updated TWRP, latest nightly, format cache/data and reinstall the ROM and I should be on F2FS? Or is that horribly oversimplifying it?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
Yep data-cache

I wipe all, format data-cache in f2fs. Install cm12.1
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Sicron:
If you haven't tried reseating your battery yet, you can try that. It gave me back some invisible and unusable batterylife. Battery life on CM12/CM12.1 is roughly the same for me as on stock. Depending on usage I can get anywhere between 5/6 hours (heavy usage, gaming, higher brightness) to 9/10 hours (light usage, mostly youtube or webbrowsing, max 15-20% brightness). Sometimes the Android System process does glitch out for me though, getting high CPU usage and drastically lowering battery life. Only happens on CM12.1.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Kamikaze19:
microSD Card

Anyone else having any issues with the microSD card not being mounted or recognized? Worked great on CM12.0 but hasn't worked since I updated to CM12.1 (running the latest nightly - 05/09).
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
Sandisk 64gb exFAT in fine
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Exculpo:
Yep, I got the same issue. I have a 32gb Samsung class 10 that has been working for me so long that I've forgotten what filesystem it's formatted in. Worked on cm12 though.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] mongonexus:
thankyou cr and cm, 5.1.1 is the smoothest rom on this device since purchase over a year ago, keep up the good work,thankyou,,steve
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Rhodesfreak:
Hi guys,

How can I format the tablet in f2fs?

I just flashed the latest nightly and I don't see the option in twrp.

Thanks!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
wipe-repair on change file system
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
Follow these directions: https://plus.google.com/+ChetKener/posts/7No16fUQaFz

Make sure you have the latest TWRP and at least the 5/8 nightly.

---------- Post added at 10:53 AM ---------- Previous post was at 10:49 AM ----------

I just converted to F2FS and everything worked in that I was able to convert the filesystem within TWRP and after a reboot into recovery I verified that System/Cache/Userdata were all F2FS formatted. I then proceeded to flash the 5/9 nightly and I noticed that in doing so it mentioned (and I don't recall specifically) something about EXT4. I flashed GApps and rebooted fine.

Upon reboot I opened adb shell and issued "mount | grep system" only to see that it's still EXT4. Cache and Userdata are both F2FS however. Did I miss a step in the process of flashing the ROM or is this the expected behaviour?

** Answering my own question. /system being reformatted by the ROM to ext4 looks to be expected behaviour and from what I'm reading, unless you modify the ROM to see/use the F2FS filesystem it will always do this. Also various sites are reporting that /system being F2FS is not going to produce a speed gain as it's all read and F2FS doesn't necessarily improve that aspect of the file system. So looks like this is correct, I guess to ask [MENTION=3857343]crpalmer[/MENTION] should we expect the ROM to ever take advantage of F2FS or is there no real gain so it's not going to be developed?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] caloyzki:
Where can we get the latest TWRP for this tab?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
https://dl.twrp.me/mondrianwifiue/
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] caloyzki:
How to flash the zip? When i flashed to twrp recovery i got error message.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
From here: https://twrp.me/devices/samsunggalaxytabpro8.4exynoswifi.html

"TWRP Install (Requires TWRP 2.8.4 or higher already installed):

Download the latest TWRP image file (.img) from the download link and boot TWRP. Go to install and find and select the Images... button. Browse to the image that you downloaded and select it. Choose recovery and swipe to flash."
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
Thanks for your input! And did you saw any significant usage and/or speed gain by using f2fs?

Thanks
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] caloyzki:
Yes i have 2.8.6.0. It wont let me flashed the zip file. It says error all the time

---------- Post added at 09:59 PM ---------- Previous post was at 09:50 PM ----------

Wow thank you. I just updated now. I didn't know about that img file to get flashed though. Lol. Ty alot
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] caloyzki:
I have 32gb sd card. How come no matter what i cant delete the files from sd? Wont delete using phone and wont delete using pc. My tab keeps lagging when i put the sd card. Any idea guys?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
Most SD cards don't last. Get a new one.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
Well I am now using f2fs. Will see very how it behaves :) Not sure if it was because of a clean install, everything is much smoother/clean transitions and a little less response time.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] rcook55:
Maybe? It seems snappy but I've noticed that on this tablet pretty much every time I flash a new nightly it feels really snappy before slowing down. The test will be if it stays snappy for a week. I did find that I had horrible battery drain but I can't see how it was related to F2FS, once I PG'ed GPS that went away.

Overall it seems like it was easy enough to do and I've not seen any downsides yet so I'd say to make the switch if you feel comfortable, especially on a tablet that I'll assume isn't use critical in any way.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] llapao:
[emoji1]

Well already did it and yes, snappy [emoji28]
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] direwolf1:
Random reboot

For the past several weeks now I've been getting random reboots. Not sure why, though they always happen when I interact with the tablet (i.e. tap on a setting or a search box, etc.). Lately they seem to have gotten worse and now render the tablet almost unusable. Which is unfortunate, because I LOVE this ROM. I've uploaded the last_kmsg here, so hopefully that'll be helpful in debugging this. Let me know if there's anything else I can do to help.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] palmbeach05:
Anyone getting a system ui crash after updating to 5/13 nightly?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] maximh23:
Im too
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] KarlDag:
Clean flash.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] direwolf1:
It was a clean flash. I've had this issue despite trying to clean flash to new nightlies several times.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] crpalmer:
Reboot to the Samsung splash screen or just a soft reboot to the CyanogenMod logo? Your lastkmsg doesn't contain a crash. If it is a soft reboot your want to grab a logcat.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] gewin:
Yes, tried to upgrade to 5/13 from 5/6 (I think that was what it was). Dirty flash, cleared cache with TWRP, have done this the same way many times.

Reboot and get system ui crash. Haven't had this one before. Might wait for next nightly and flash that over this mess to see if it fixes the issue. If not will have to try a clean install (hate having to set everything up again).

I see in the changelog there is a system ui fix coming in the next release "Point to correct permission for BIND_CUSTOM_TILE_LISTENER."

Hope this fixes the problem.

Shouldn't complain through they are nightlies.

Great ROM and really appreciate the work.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Magoo222:
I'm having a weird problem with a Torrent Client app, that manages a web server running on my desktop (qbittorent),

when I try to add a .torrent file from my downloads folder, the app reports "torrent sent" but does not show up in the app or on the desktop server and then after that my downloads folders, suddenly opens the app itself, instead of showing the contents of my downloads folder, Only a reboot fixes the download folder back to normal, but still can't get it to pass the .torrent file to the app on the tablet. Talked to the developer of the app said he has never heard of such a crazy thing........ :confused:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] gewin:
System Ui Crash

Flashing 5/14 over the top of the failed 5/13 fixed the system ui crash problem. That's service for you.

Thanks so much.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] the Doctor:
SystemUI Crashes

Just to clarify for everybody, as Boeffla explains in this post, the cause of the crashes is that CyanogenMod made changes to their ramdisk that make it incompatible with custom kernels. Lots of devices with CM12.1 are experiencing crashes with custom kernels right now.

If you are on stock kernel, it should work fine.

If you are on a custom kernel, you have to wait for the dev to update it to accommodate the changes to ramdisk.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] direwolf1:
Sorry about that, and thanks for responding! I've had both soft and hard reboots, but hard reboots are more frequent. I'm going to clean flash the latest nightly today, and I'll be sure to grab a logcat if the issue persists. Thanks for your response.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] palmbeach05:
By stock, you mean CM stock kernel?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] the Doctor:
Yes.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] nephilim1:
Good rom!

Hello, I came from cm12.0 and it's quite good, I used it for months. Then I flashed the 05-12 12.1 rom then experienced system ui errors, so I decided to flash the 05-15 ,hoping that it would be fixed.Sadly, not. I will go back to stock and wait for this rom to be stable. This rom is good and beautiful, Thanks for the experience!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] the Doctor:
You shouldn't be experiencing problems with systemui unless you've flashed a custom kernel. The latest nightlies work fine with stock CM12.1 kernel.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] nephilim1:
Hi, I didnt flash any kernel. What happened is that when I launch an app. After a couple of minutes, it will bring me to the lockscreen itself, then when I try to unlock there is a black mesh covering half of the screen, then later systemUi has stopped. Maybe I will wait for a couple of nightlies again then try flashing again.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] the Doctor:
That probably won't fix it if the nighties are working normally on other devices. It points to some issue with your setup. I'd try a clean install after full wipes.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] gewin:
system ui

The problems with 5/13 for me at least were certainly nothing to do with custom kernel. I have never flashed one. Always totally standard CM. As I said the issue has been resolved in 5/14. I have had no problems with 5/14 over the past 24 hours.

Great ROM.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] dcsscd:
Ok i have big problem here, hope i haven't bricked my tab.

I installed the last cyanogen 12 for tab 8.4, worked good for a few hrs, then i restored my apps & data (no system data) with titanium backup , 2-3 hrs later (didn't used it right away after the restore but seemed to be with no problems) i had the message "android.process.media has stopped" or something similar, and also trebuchet , the message appeared some times right away after i clicked "ok" and the screen went black but the tab was turned on, i managed to reboot it. Then right away after the reboot i had the same message plus that google play store and others from google had stopped, the screen went black again but now the tab seems turned off, and i can't reboot or turn it on. The physical buttons don't light up, neither the turn on button is working, and if i plug it via usb the Mac doesn't detect it ( i still need to plug and test it at my PC where the drivers are installed )

Can somebody help?

Thanks.

---------- Post added at 09:42 PM ---------- Previous post was at 09:28 PM ----------

It turned on again, the same thing happened, screen went black, but i was able to select turn off for the moment.

What should i do to fix this? Wipe and flash CM & google apps again?

---------- Post added at 09:54 PM ---------- Previous post was at 09:42 PM ----------

edit: read old post from here, i understood that i need a new gapps, i guess that when i did the restore of apps i restored google play and this screwed my tab.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] gewin:
I had a similar problem a while back using backup to recover apps. To fix it I did a clean, fresh install of CM and all apps. Data on the sdcard is OK.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] _dsouza_:
GMail app does not support Exchange accounts in CM12.1

Just upgraded from CM11 to CM12.1 (cm-12.1-20150515-NIGHTLY-mondrianwifi + gapps-lpmr1-20150503-signed).

I did a full wipe, and a clean install. So far, everything is OK.

However I cannot add Exchange accounts to the GMail app (see below).

Is this a GApps issue or is CM12.1 missing any Exchange service required by GMail?

Thanks!

EDIT/PS: Exchange accounts work fine using the embedded/native CM email client app. This issue is only with GMail app.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Alexey71:
1. wifi is turned off when the tablet goes into sleep mode.

2. what happened to the width ?. In previous builds it was normal and beautiful

These fixes may affect a large width? You can return the fixes, I can test

I think that one of these patches spoils width

http://review.cyanogenmod.org/#/c/95888/

http://review.cyanogenmod.org/#/c/97544/

PRODUCT_AAPT_PREF_CONFIG

xhdpi (extra-high) ~320dpi

xxhdpi (extra-extra-high) ~480dpi

Build.prop 320 dpi

3. How to activate it?