yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] robert1968:
power off after screen off

Hi,

Latest weekly (lineage-14.1-20181229-UNOFFICIAL-v2awifi.zip) installed, and beautifull, lots of new features, so i really love it. Thanks Thompatry to keep tab pro 12.2 live ! :)

Battery has changed a few days ago and unfortunately i shorted wires for trice while soldering. I thought i ruin the whole mother board but fortunately only the NTC demaged (and maybe some part of the motherborard??)

No charge started because tablet shows battery is over 60 Celsius.

I left the middle blue cable unconnected so now tablet knows battery is 17 celsius, because there is no signal from battery.

So now charging is acceptable (1,5A), and tablet works fine,

but there is something very annoying thing:

After screen is off, 20-60 sec later tablet says: power off and then shut down the Lineage14.1.

I tried to modify CPU minimal speed and Tasker to weak up the processor, but no luck. if screen is off then shutdown is always forced.

Today i went back to the latest Samsung official Loli rom (5.1) and there is no such as issue!. If screen is off then no shutdown happens on stock ROM.

Is there a way to catch/understand what initiate shut down on Lineage and why it is not happens on official rom? Or should i try different kernel?

I provided some logs on Lineage but i did not find any suspecious messages. How can i provide some more proper logs?

I would love to use Lineage - if there is any way to stop shutdown after screen goes off.

Best regards,

Robert
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Piout:
Same here. Thank you for providing ongoing support for this tablet.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] ZaeZae:
I dirty flash the latest build 20190105 and I notice my tablet don't shutdown anymore and no flickering...thanks
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] ethicsveritas:
First off thanks to thompatry!!!

I am having issues with newest build of screen flickering....and some apps minimizing/closes.

Anyone else having issues?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] beaverlayland:
Great Rom , Any Oreo?

Hey thomparty,

Can I just say great job on the rom, makes my tab pro run buttery smooth. :D:D

Just wondering if you've had any joys with Oreo on the tab pro 12.2? :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] borntochill:
I currently have lineage-14.1-20180721-UNOFFICIAL-v2awifi on my SM-T900. I see the latest build is lineage-14.1-20190223-UNOFFICIAL-v2awifi. However, when I click on About Tablet > LineageOS updates, it says "No new updates found. To manually check for new updates, use the Refresh button."

After refreshing, it still shows "No new updates found." I'd like to stay up-to-date with the ROM. What am I doing wrong?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
Its an unofficial ROM. Nice try but doesn't work that way. You need to download the ROM and then flash it. Link on OP.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] borntochill:
Ah, okay, I didn't realize that unofficial ROMs didn't support that feature. On my other Android devices, all have official LineageOS builds.

To preserve my existing apps and data, is the best way to go about that using a Nandroid backup? Or is there some quicker method to install a newer ROM version than essentially starting from scratch with a newer build and then restoring a backup following steps in OP?

In other words, could I save some time by doing a dirty flash from my existing build to the latest 14.1 unofficial build, or is that a bad idea? If it's generally safe, do I need to make sure to reflash the same version of GAPPs I used before, and if reflashing the same version of GAPPs is necessary, is there a way I can identify that version on the tablet?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
Yes, make a nandroid. If you screw up easy recovery. No, nandroid zero use for new ROM. This ROM you can "dirty flash". Wipe cache and Dalvik, flash ROM. All your data (apps. WiFi settings, etc) stick. You may have to flash root after the ROM depending on what you use for root. Lineage SU sticks. SuperSU or Magisk needs to be flashed each time. Not 100% sure of Magisk as I'm somewhat new to it but I know it doesn't hurt.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] borntochill:
kb8no, thanks.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] sssvill:
Good day,

My SM T900 tablet has started restart loops, it stays on a minute or 2 nothing I do is retained, even when I shut it down before it crashes again. I cannot get into recovery mode (Power + Volume Up), it says no command then restarts. I can get to Download mode ("Odin" mode), and it seems to stay there without restarting.

My question is, would changing my OS to Lineage fix my issue? Do I need to do anything, like changing a setting or what not, before trying to use Odin to overwrite the current OS. I can't load files onto the tablet so i would need odin to do all the loading/installing etc. I never messed with the OS on an android device so a little worried about bricking it.

thanks much,

Steven
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Abdu mostafa:
You didn't provide a lot of info about the issue, but I recommend you reboot your device in safe mode to find out if the issue is caused by a rogue app (press and hold power button until the logo appears , then press and hold the volume down button) you should see "safe mode" in lower left corner of the screen.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] sssvill:
Safe mode crashes after a minute or so, any data changes (added, deleted, modified files) are reverted, so i can't work in safe mode. i have tried uninstalling apps but to no avail. Only app that was recently added was tower defense game "Defenders 2", but the crashes started a few days later.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Abdu mostafa:
Since you can get to download mode just reflash the stock rom using odin.

Check this thread

https://xdaforums.com/galaxy-tab-pro-12-10-8/general/firmware-stock-firmware-tab-pros-t3087238
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] stslimited84:
Having some issues trying to update to this after a long run on cyanogenmod. First off, thanks for all the hard work and effort keeping this old but fantastic tablet going.

I've updated to the latest TWRP, downloaded the most recent two nightlies and the recommended GApps from the OP. I can boot into TWRP without issue; however, after this is where things go wrong. Most of the time I can get through the install, but when I reboot the screen goes blank and fails to boot. This also happens during the actual install sometimes.

I'm not sure what the issue is or how to correct it. I can always get back into recovery.

What needs to be done to get this up and running?

Thanks in advance!

**Update**

This post from earlier in the thread fixed my issues and got it up and running:

Ty :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] ugabuga:
Need some help guys.

Installed TWRP from OP on my old rom. Odin and installed Samsung US Lollipop. Tablet started reboot looping. Re-did Odin and this time it booted a fresh Lollipop. Now it looks like i lost TWRP and it is now default recovery.

How do i install TRWP here so I can install this rom?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] matthelm:
Where did you get the ROM?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Rokil:
I am getting more reboots these days, so i am wondering if there is any progress on a new release?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Neekeet:
My device recently had rebooting issues while watching content on YouTube, thought it was just me.

Have you had any screen flickering?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Rokil:
No screen flickering here. Seems like there are memory issues. When i have used something like 10 apps the tab gets slower and slower and then gets stuck and reboots.

Now i restart into twrp and wipe the cache for about 3 to 4 times a day.

It's a shame that this great tablet isn't getting any support anymore....
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] guidol:
I got NO problems here with my SM-T900 with the following versions:

- twrp-3.3.1-0-v2awifi.img - https://dl.twrp.me/v2awifi/

- lineage-14.1-20190525-UNOFFICIAL-v2awifi.zip or

lineage-14.1-20190615-UNOFFICIAL-v2awifi.zip

https://download.exynos5420.com/LineageOS-14.1/v2awifi/

- Open GApps ARM Android 7.1 Pico 14.06.2019 (146MB) - https://opengapps.org/

- SuperSU-v2.82-201705271822.zip - Recovery Flashable.zip - http://www.supersu.com/download

and

I did buy the complete version of "Deathly Adiutor App" - maybe configure your SM-T900

here a bit more.

I have seldom a very short flicker (less than a hald second), but mostyl when the desktop is displayed.

The only thing I have - but not only on the SM-T900 - is that Google Chrome does freeze for a short time on very long Forum-Webpages where linux dmesg-bootlogs are embedded as code-display.

Does anyone know why the last update is from the 25.05.2019?

Is the - normal weekly - building-process on holidays? ;)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] srialmaster:
There are new updates:

https://download.exynos5420.com/LineageOS-14.1-Deathly/v2awifi/
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] wizard66:
After dusting off my SM-T900 and installing this 7.1 rom all working fine.

Many thanks to all peoples involved to make this possible.

What a great tablet this is, with the new rom it's back on track in time to come.

Thumbs up guys :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] djiscool:
I had screen flickering issues on mine for quite some time. I got annoyed and tried to replacing the battery with some Chinese knock off from Amazon last month, and to my surprise it stopped flickering.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] c19932:
Hi Thompatry, would you happen to have any personal oreo or newer android builds that you could share? That would be greatly appreciated by many. Thanks! I am assuming that you've probably moved on to another device
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] thompatry:
I have not moved on. I am currently working on Pie in my spare time.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] c19932:
ghats great to hear! . This device is way too capable to be abandoned , thank you for bringing life to this device and im sure a lot of other users will appreciate this
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] thompatry:
Just a small update, the pie build is coming a long nicely. I expect to release it in the next month or two at the latest. I will not guarantee all the features will work but I have kept you guys deprived for so long I will give it a shot. I will keep you updated.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Compumed:
Thanks so much for keeping this device viable!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
This morning the updater started to work, for the first time in two years! I'm on the September 21 build.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] NickosD:
I was thinking of selling the tablet because of the laggish filling of android 7. I will wait till you release the pie because I think it will be more smooth with pie. ?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
9/22 build not selinux enforcing. Does that mean something?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] thompatry:
No. Refer to the first post of the thread. It just means it is running a custom rom. I will look into why it is showing that.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
Geez. That was 3 years ago! I do remember reading that now. I have read every post. Still I don't remember that on my recent less frequent upgrades. Could easily be from not paying attention. BTW, very excited about Pie. That would be exceptional! Sitting on the edge of my seat.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] ibpalle:
Pie would be AMAZING. Was going to offer thanks but I have been using this rom for years now so a donation was more appropriate. Thank you for sharing your work with us.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
You're right, same here! Donated as well!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] thompatry:
Thanks both of you! I will enjoy some beer and coffee and keep working.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Evil-X-Live:
Hey there Thompatry. I'm happy that you're still here kicking that bucket.. But unfortunately I tried to download the updates from the site and comes out with a php error.

<?php

define('H5AI_VERSION', '0.29.0');
define('MIN_PHP_VERSION', '5.5.0');

if (!function_exists('version_compare') || version_compare(PHP_VERSION, MIN_PHP_VERSION, '<')) {
header('Content-type: text/plain;charset=utf-8');
exit('[ERR] h5ai requires PHP ' . MIN_PHP_VERSION . ' or later, but found PHP ' . PHP_VERSION);
}

if (substr(H5AI_VERSION, 0, 1) === '{') {
header('Content-type: text/plain;charset=utf-8');
exit('[ERR] h5ai sources must be preprocessed to work correctly');
}

require_once __DIR__ . '/../private/php/class-bootstrap.php';
Bootstrap::run();

Let me now when its fixed.. my tablet is 1 year out of date..... Thank ya!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] thompatry:
Should be fixed now. We were doing updates and it must of broke PHP.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
Indeed the download site is working again. I went to the Updater and indeed it identified 9/28 as the most recent ROM update. Yeah. Indeed, it downloaded the ROM. Yeah. It would not install with "install error". I am using TWRP 3.3.1-0. So I was going to manually update it but I cannot for the life of me find where Updater put the ROM. It is definitely not in Download. I have not used Updater in so so so long and can't remember where to find it and looking everywhere was unrewarding. So I manually downloaded the ROM again and manually installed it. Any advice???
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
The files downloaded by the Updater are stored in /data/lineageos_updates/

You still have to manually reboot into TWRP to install.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
I found it once again! Thanks. /lineageos_updates is in the root of the internal drive. [MENTION=4817899]thompatry[/MENTION] What does it take / how hard is it to script the update install button to open TWRP? Besides being really cool it would be interesting to just know how it is done and what issues there are.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] NickosD:
I know we shouldn't asking for ETA, but we are close to the end for the 2nd month ^^
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
More importantly, the October 2019 security patch was the last one released for Android 7.1.x.

Source: https://source.android.com/security/bulletin/2019-11-01

Pie would be a nice Christmas gift :angel:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Rokil:
I hope my Tab will make it untill pie is finaly released. Since two days the cpu runs constantly at high Mhz and the battery lasts only for half an hour. The cpu temp is between 75 and 85 Celsius. Didn't install anything, this just happened.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] NickosD:
My guess is that you still got a malware somehow. Try to run malware anti malware bytes or factory reset
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Rokil:
I figured out that Google Photos was the problem. It kept running in the background and drained my battery.

Once i removed that app, everything was back to normal.

Still hoping for Pie.....
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
OK guys and gals, it's time for a newb question.

I've read the whole thread, and understand the "TouchWiz things don't work" thing.

With the help of a youtube or two, I'm up and running on LineageOS 14.1 and stock GApps; BT mouse working, haven't tried other stuff yet.

Question is, are app folders on the home screen a TouchWiz thing? The drag & drop on top of another app icon doesn't work, no "Edit" option/function to create a folder.

If it's TouchWiz, are there any alternatives?

Thanks in advance! Great work by the OP and his help!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
Help! Newb question #2:

Realized I need root access to run Deathly Adiutor App. Downloaded the linked file "addon-16.0-arm-signed.zip"

Copied it to the downloads directory of tablet, selected it with Zip Signature Verification, Swipe to confirm Flash.

"Zip signature verification failed! Error installing zip file ..."

Attempted install without zip signature verification.

Installing zip file ...

Warning: No file_contexts

Installing su addon...

Done

But reboot, allow root in apps and ADB in settings, DA says no root access. Can't get a log file, need root for that. :(

Back into TWRP 3.3.1-0, factory reset (wipe Data, Cache, and Dalvik), reinstall ROM, root and GApps. same error.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
[MENTION=1919899]Pukat[/MENTION]

in reply to both of your posts:

Touchwiz was an overlay to Android specifically for Samsung phones and tablets a couple of years back, with a lot of custom features (and bloatware haha) only for Samsung. So it doesn't exist in your T900 anymore, since you've flashed LineageOS. And that is basically stock Android with some additional features.

However, you can make folders in your homescreen, by simply drag app icons into each other. Android will create a folder then, and you can name that folder as well. You cannot create folders in your app drawer (launcher).

You also tried to root your tablet. Now, I don't have much knowledge about rooting, because I don't do that. But, it seems like you are trying to install the root packages for Lineage 16.0, and that is Android 9 (Pie).

For the T900 the version is Lineage 14.1 (Android 7.1.2). So try to install an older version. That might help.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
[MENTION=1919899]Pukat[/MENTION] Last posts have good information for you. Indeed, Touchwiz is gone and LineageOS is close to stock Android. Do not use the Lineage addonsu to get root, it is obsolete. Use Magisk. You can download the zip or install Magisk Manager app and ask the app to download the latest app zip.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
Install TWRP using ODIN with reboot unchecked in options. Once you have successful flash, reboot with power and volume up, release power after 2nd screen flash. First screen asks if you want to modify, swipe yes so you keep TWRP.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
[MENTION=4465682]kb8no[/MENTION] Last posts? Last mention of Magisk was your post #490 back in February... :confused: :)

If the Lineage addonsu is obsolete, why is it still recommended in OP's post #1 ? I see that Magisk has some more tweaks available, but OP is still recommending the Lineage addonsu.

Does Magisk stick? Does it allow Netflix to be installed from Play Store? (If you know, I realize you don't use your Tab for that)

Thanks!

---------- Post added at 11:11 AM ---------- Previous post was at 11:01 AM ----------

[MENTION=10151767]Cebiidae90[/MENTION] OK, folders. I've tried, both on Home screen and in app drawer, to create a folder. Doesn't work. I have lineage-14.1-20191130-UNOFFICIAL-v2awifi with stock 7.1 GApps, not yet rooted. Can't find a way to create a folder.

Root. I was under the impression to get the latest version of the addonsu, wasn't aware that it was tied to the lineage OS version. I didn't scroll far enough down to see a 14.1 version, only saw the 16.0 and 15.1, also didn't know (then) that 16.0 was android 9. Learn something new every day! Thanks! :laugh:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
OP is old and maybe this detail could be updated. Just use Magisk and you will be happy. Magisk will stick even over dirty flash update. Netflix works perfectly, my wife uses it almost daily.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
Sounds good! One more question; as I attempted to install both addonsu 16.0 and 15.1 but didn't get root, do I need to use the addonsu-remove for both of them? Or will the Magisk install over-write them? I don't know if they use the same space or not.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] NickosD:
Use magisk for root. And do some more research, you might brick your device
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
I am not sure. I would start over. First, download Magisk Manager from the web site and copy it to your SD card. Then, full wipe and clean flash the ROM and Open Gapps and boot the ROM. Then install Magisk manager from SD card. Open apk so you can flash zip. It will download zip to download directory. I always move zip to SD so everything is in one place. Then reboot into TWRP and flash Magisk zip. Boot phone and you have root. Magisk Manager will keep you up to date. Magisk is brilliant and everybody uses it. Lineage no longer facilitates root and wants the user to take all responsibility. Back in the day the ROMs had root built in. Those days are gone and addon-su was the end end of an age.

Of course, allow TWRP to make system changes.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
[MENTION=4465682]kb8no[/MENTION] Yeah, that makes the most sense. I don't have much on the Tab other than a few apps, no data, so starting over will be a piece of cake. Although I merged the SD card, so I will just copy the Magisk manager into downloads after wipe.

Thanks again!

---------- Post added at 12:53 PM ---------- Previous post was at 12:52 PM ----------

Good point. Wiping and starting over.

Thanks!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
Well, that worked, eventually. Couldn't get Magisk.zip to install, zip signature error again. Turned off checking for signature and it installed with no complaints. Found the Netflix APK and installed. Now just to catch up on installing the other apps I previously had on this tab. Wow, so much faster!

Still can't get folders on home page or in app drawer. Pretty sure that's a TouchWiz function.

Is anyone able to create folders for apps on the home page?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
Just take an app icon and drag and drop it on top of another icon and it becomes a folder. You can then drag and drop as many as you want into folder.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
[MENTION=4465682]kb8no[/MENTION] As I said, I've tried that. Numerous times. The bottom app icon just slides over to the next open position. Did it all the time under KitKat. Do it with my S9+ on OS 9, so I'm familiar with the technique; S9+ even has folders in the app drawer... Dunno if there's a setting somewhere I'm missing or what. Have you actually done it under Lineage OS?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] kb8no:
You are not missing anything. It is sometimes annoying but it is all in the technique. Speed, approach, delivery, feel. If you push the icon over, don't let go, back off and the icon will come back to where it was and try again. The first time it works you will have it figured out and then you will be golden.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Pukat:
WHAT AN EFFIN' PITA!

You have to move it around until the target shows a circle around it, then drop immediately! Or the folder pops open then drop it into the folder (if already created). Not sure it's worth the hassle... But it works. Thanks!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Cebiidae90:
First of all: Happy New Year everyone!

But, I am wondering: [MENTION=4817899]thompatry[/MENTION] what's the progress on the Pie build since the last time you gave us an update? You are probably busy with a lot of stuff but I'm very eager to get a glimpse of it :D