yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
Okay. Much work to be done! 😅

Thanks for answering that fast!

Maybe I can help a little bit if you would provide me with some information. I am familiar with Java and Git (also with C# but I think, that doesn't matter...). I've a build system set up and did some building in the past. But I'm not really experienced... Tell me, how I can help and I'll try. 😉
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] LedgendaryEpics:
my hero, im going to have 2 android 12 devices? i love the future
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
I really want to that too. :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] etere:
The rom is excellent, the tablet does not seem to restart anymore (I had also changed the battery with an original one). Really good work!

Here is my little review:

1) excessive battery consumption (-70% in 5 hours) solved by disabling always on display

2) apps launched and never run solved via TWRP by cleaning chache and dalvik cache

3) unsolved: install large app (about 800mb) ... how to do?

:cowboy:(y)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] etere:
...witout always on display, 3% on 18 hours!!!!! Nice
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Super pumped to hear about Android 12 since I find 12 so much faster on my S20. Hopefully it's efficient on the Tab S3 too.

Just came to flash this and had a few issues. The instructions don't actually say how to flash the Zip. I copied it to my SD card and chose flash from SD. It kicked off OK but failed quickly with "E: failed to verify whole-file signature".

Any tips?

Edit: It's so weird when I search this thread for that error the XDA search redirects me to a thread about an LG phone. Not even search results, just another thread.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] bmwdroid:
Might try a 2nd download of the rom.

Or turn off "zip verification" in twrp settings if that doesn't work.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Tried redownloading ROM. Actually I just realised I'm not in TWRP. Might be in the normal recovery. Will try to reflash TWRP. I flashed the recommended one in the instructionswith Odin. 2 secs.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Reflashed TWRP and it said it succeeded in Odin. Rebooted and now stuck on Samsung logo. Up, Power & Home doing nothing :(

Edit: Was able to reboot into DL mode and then to recovery. Says "Installing System Update" with spinning wheel on an Android logo, before going back to what appears to be stock Recovery. Maybe TWRP is being overwritten?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
Yes, Samsung's OS is overwriting TWRP on first boot. Just flash TWRP with Odin and press Vol+ & Home immediately after success. Then you will boot to TWRP.

Sidenote: You can always exit a boot loop with Vol- & PWR (holding).
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
You will get this message in TWRP too if file signature verification is turned on. It's because this zip is not signed. But that's no problem. Just deactivate the feature...
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Cool thanks! I came to the same here: https://www.thecustomdroid.com/install-twrp-root-galaxy-tab-s3/

TWRP is on and ROM is installing :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Damn. Install went OK (couple of "failed to mount /data errors), and Gapps too install completed. Boots to Lineage logo and times-out before going back to TWRP.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
You have to format data (not only wiping) because it is encrypted by the Samsung OS. Please keep in mind that this deletes ALL of your data.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
That worked. Thanks :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] square_eyes:
Worked for a bit but now I'm getting boot loops after installing Nova Launcher and a couple of other apps.

Edit: Reinstalled form scratch and left out Nova. So far so good.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] LedgendaryEpics:
how do people get around the os being read only?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
What do you mean?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Thank you for enjoying this ROM. :)

You're right, audio has a little problem yet. I have a plan to fix that, but it will be after trying to use the Samsung binaries to fix the quad-speakers. If using Samsung binaries doesn't work, then will try to fix various issues with the bottom speakers.

And you can disable the alerts from Trust app by its settings.

The "Serial console enabled. Performance is impacted" message probably is by a kernel or bootloader problem. I can't sure, but fixing this may be quite the last part of my LOS 18.1 project because it seems not affects the performance actually. If fixing this is pretty easy than I thought, I will fix that promptly.

Enjoy. :)

I strongly agree that the stock ROM is quite slow than it supposed to be. Snapdragon 820 with 4GB RAM should not be slow like that. Even that is on Android 9. This is one of the strong reasons why I started the development for LineageOS 18.1.

I really hope this ROM works like a charm on your tablets too.

And I'll keep updating this ROM until it is really usable without any major issues.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] bmwdroid:
@Awesometic I'm really eager trying it out but don't wanna miss camera and LTE.

Running on stock debloated and my T825 sometimes just doesn't accept any input.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] EonOfBlack:
Hey there, how did you get that kernel to build for a Android 11 based ROM? I'm interested in developing for this device.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Thanks. I'm not sure about camera but I think I just managed to fix LTE using vendor RIL files.

IMEI and the baseband version recognized, but actually need to be tested for sure. 😅

Hi. You can check my commits on my MSM8996 kernel repository.

Commits · awesometic/android_kernel_samsung_msm8996

Contribute to awesometic/android_kernel_samsung_msm8996 development by creating an account on GitHub.

github.com

Not that much, I did only it can be built with Android 11 source tree.

It'd be really great if you join its development. :D
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] bmwdroid:
Wouldn't mind testing it if it can help.

Have few other tablets I could use meanwhile.

Btw. which TWRP do you use?

Mine is still on twrp_3.2.1-1_T825_ashyx_Valera1978_repack but I kept as well a copy of the 3.4.0 which was withdrawn later.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
If you can so it'd be great. Will upload this LTE fixed(?) version soon.

I use my TWRP that is 3.5.2_9.0. It works fine on my use case but not sure about further features including H/W decryption. Just, I put some files the same as the other MSM8996 devices have, roughly.

Actually I planned to upload that TWRP too, and it will be very soon after applying some more patches.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] EonOfBlack:
Cool as, thank you.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] EonOfBlack:
Some feedback on this. The kernel needs a lot of work. Why does the camera not work for a start? How much of the parts of this device are proprietary, is this kernel coming from the old Lineage 16.0 (Android Pie) builds?

What's the progress at the moment?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] samsuffit:
After a few days...

+ Very good kernel/cpu management, meaning, a real deep sleep and a good battery life. That's the problem with others roms, no deep sleep state (or not for long) and a lot of battery draining when the screen is off.

- I experienced a screen freeze, massive bug, it seems related to the bluetooth, but I never tried to use it. Here's a logcat:

@Awesometic Thank you for your interest in this damned tablet :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
I tried to fix the camera but after some number of tries, I decide to skip fixing that because the camera is not the first one for the project.

The proprietary, if it means vendor files, I roughly started the project because the first goal is to make the device working on LineageOS 18.1. But I tried to build the components as much as the other MSM8996 device does.

Actually, I had to write the proprietary-files.txt from scratch because it was an empty file... :( Probably this part has taken the most time of all the development period.

And the kernel is forked from Valera1978's repository, it is also for fast development. By the commit messages, maybe the current base is T825XXU3CSH7. Right, it has to be updated and maybe has to be fixed lots of things but I won't focus on the kernel right now because I think I should finish the device tree first.

It's been only 1 month since its first boot up on Android 11. :)

Thanks for the report. :) And also glad to hear that the power management working in the right way.

I didn't know that the Bluetooth may cause the screen to freeze. Will look into that issue on my side.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] supermike86:
honestly, I already use this as a system on a daily basis. for deep sleep turn off AOD. the only thing that didn't work for me is chrome this breaks. however I must say that apart from some small graphic lag the ROM runs really well.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Thanks for the review. :)

But I still should say that it is important to back up your data, because I even don't know what will be changed in future updates. 😅

Chrome, I always use Samsung Internet on Android devices so I didn't know that it might be not working. What kind of GApps did you install?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Dwightsch:
first of all, thank you very much sir/mam for this . I'm in iran and can't/won't afford anything else for the foreseeable future so this is potentially very valuable to me. thank you.

I just wanted to ask you to please consider implementing "palm rejection" or some sort of method for blocking or switching back and forth between input methods. I usually use this tablet for annotating textbooks or taking notes which without palm rejection or distinguishing between input methods is impossible. on the other hand the stock rom is absolute garbage riddled with looping errors and exceptions mainly from audits and GMS.

thank you again

wish you health and strength
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Thanks, glad it could help you.

But I am sorry I should say it won't be implemented quickly. 😅

If someone gives me an idea or lets me know a ROM supporting that, or directly helps me, I will apply that "(kind of) palm rejection" feature promptly.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] supermike86:
I don't care for my data, because I don't use this for storage or sensitive data. 🤣 I used "official" gapps but noticed that internet browsing doesn't work with all applications. so not just chrome. still nice job done by you.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
That's good. :)

By the way, what "official gapps" means? Is your installed GApps isn't OpenGApps?

This question is because OpenGApps itself, we may not define it as an official since it is not released by Google.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] bmwdroid:
@Awesometic thanks for your work so far.

Gave both a try today.

Things I've noticed

In TWRP: after flashing the ROM purely from mobile SD on fully wiped (+Format Data) T825 it doesn't recognise the SD any longer (even after several reboots) and wants to format it.

So after testing pure LOS I couldn't flash BitGapps64 (which I prefer to Opengapps pico as even smaller) and Magisk without deviation to USB.

SD is still readable in P900.

Btw. is it reasonable to save "System Image" or would that be restored anyway when going back to stock via Odin as I assume.

In LOS: my Playstore account lists apps I've bought but these three don't realise that and want to be bought again.

Vivaldi browser is laggy and freezes quite often.

LTE had during testing time (10') stable connection.

I will reinstall and check with NikGapps64-core first and later perhaps Opengapps-nano (nearly 3 times that big)

Edit a few installations later:

NikGapps didn't help with my SD card nor with bought app problems.

Tried older TWRP and 3.2.1... didn't loose the SD card and LOS18.1, BitGapps + Magisk were flashable also so I'll stick to that although less partitions can be backed up.

Fun fact is that now my past buys are recognised but don't know why now and not before.

Still setting up.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] samsuffit:
There's a bug with this tablet, the current date and time don't survive a reboot. It's since I don't remember which update, that also block any attempt to downgrade the bootloader... Your rom has updated the date at the date it was created. After a reboot, the date still reverts, but, it's kind a progress. Do you now in which hidden partition or wich mecanism store the date and time? I think maybe it's because this partition is updated then changed to read only that date and time don't survive a reboot.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Stogie87:
OMG this Device got a developer again. That's awesonme. I hope we will get a stable release for Wifi and LTE version :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] supermike86:
he apologizes, he is not specific as official. i used opengapps.🤗..I try to use other package, maybe some more gapss. True, a lot of work to do, but it's a shame for this tablet so light, and with such a good display. Thanks again.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] LedgendaryEpics:
Sorry, I meant android 10 to now. I cannot edit build prop or change lock screen sounds etc...
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
Hi,

thank you for this great work.

I installed your 18.1 to my SM-T825. Most works great, but I have one serious issue: activation of LTE conection is very unstable - I have to fiddle with mobile date / fly-mode switches to get it working or to reboot the tablet.

Further, when it connects, not all apps get internet connection. Within the browser, some webpages open, others do not (net:ERR_NAME_NOT_RESOLVED). Also many of other apps I use reject with message "no internet connection". Seems that the network stack is not setup properly - resolve problem.

WIFI works perfect.

Any idea how to solve it?

Thanks,

woec

Solved it! Problem was in the apn-Settings: ipv6 was enabled, which is not supported at all sites.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
HI,

I have one further problem with twrp: after install (the recommended version 3.6.0_9.0) by odin it boots and worked as expected.

But further boots get stuck: the message "recovery boot" appears, after one or two seconds display goes off and tablet stays in this mode. To recover, I have to install twrp again.

Any ideas how to solve?

Thanks,

woec
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
Did you activate recovery updates during LOS setup?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
Sounds like a DNS issue to me... :unsure:
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] masdaster:
You need root access to edit those things. With root access you are also able to remount /system RW. But for most customizations, this should not be necessary...
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
I am not sure if I checked recovery updates on my last install - can I check this within the running system?

Further, I found the camera not working: camera APP crashes!

I tried an other cam APP - this tells me that it can not Connecticut to the camera.

How can this be solved?

Thanks, woec
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
after rebooting the tablet, camera works!
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] LedgendaryEpics:
android has been read only since android 10, there are people who get around it, but searching for those forums/individuals have been somewhat difficult...
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Tomcar:
Worked for me on OnePlus 7t. Worth a try

https://xdaforums.com/t/script-android-10-universal-mount-systemrw-superrw-featuring-makerw-read-write.4247311/
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Hello all.

I uploaded the new versions of HavocOS and LineageOS.

Now we have Feb. 2022 Android security patch.

And I added, changed quite many things to improve stability and battery life, thermal management.

While I was experimenting I committed many things to the device tree and the kernel.

Consequently, it looks like better than before in terms of thermal at least. Now some units in the system manage the CPU frequency smartly, which means if the device's temperature gets so high then it reduces the CPU frequency a little bit to cool down the device.

This sounds like it may affect the overall performance, but for me it works very well so far. Yeah, we need some more tests.

And I think I fixed the hotspot working. But I don't have a sim card for a tablet device available so I need feedback from the real user. Please let me know the results. :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
Hi,

can I apply your new LineageOS version to my recently installed 18.1 by upgrade without new installation of all? If yes, how to do it?

Thanks
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] bmwdroid:
On both LOS and Havoc for my T825 this worked:

Backup everything with latetst TWRP to SD,

Wipe System and Caches,

Flash ROM, Gapps (I'm always using BitGapps64) and Magisk,

wipe Caches afterwards as usual,

Reboot and enjoy (after updating Gapps in Playstore and Magisk).

If that doesn't work directly make a full wipe (incl "Format Data") proceed as above and restore Data from backup afterwards.

Btw after three versions of LOS I've switched to Havoc which has more setting options.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] rdiaz02:
Thanks a lot for your work.

I installed Lineage 18.1 yesterday, and I have a question about security and file-based encryption (FBE). I've read in the first post that hardware encryption is not working and in https://xdaforums.com/t/rom-unoffic...-18-1-for-galaxy-tab-s3.4293069/post-85599509 we are told that we should not try encryption. But I thought this meant full disk encryption.

It seems that FBE is not working. I started TWRP in recovery, and I can see (Advanced -> File Manager) all of my files, including files that should not be visible (files under /data/data and under /data/media/0), directory names are not encrypted, etc. (And I was never asked for my password/pin). So this means that if my tablet is stolen, anyone can have access to all of my files by just booting into recovery. Is there a way to prevent this?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Hello all,

I just uploaded a new version that contains a hotfix for the hardware buttons.

In the previous version, we can't wake up the device using home button. And also there is nothing to setup the hardware buttons in the settings.

This was caused by my mistake, and just realized that yesterday. Sorry for the inconvenience 😅
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Right, FBE is not prepared yet. Currently I'm fixing the superficial issues like random freezing or thermal management. But as FBE is very important for the security as you mentioned, it is definitely in my to-do list for the ROM development. But sorry for that I cannot make sure of this for now. :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] rdiaz02:
Thanks a lot for the clarification (I wasn't sure if I was understanding correctly, or doing something wrong, etc).

And thanks a lot for considering the possibility of adding it to this fantastic ROM. :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] MachineMasher:
I finally got the courage up to try again, and as far as I can tell, it's working!!!

I installed LineageOS through TWRP, the cleared the cache and rebooted, went through the initial setup. Then went back to TWRP and installed OpenGAPPS Nano, then rebooted again, went through the next setup, installed a few apps, and as far as I can tell, everything is good!

Thanks very much for your suggestion, @xpil, and thanks @Awesometic for creating this great ROM!
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] woec:
After some period using LinageOS/HavacOS on my SM-T825 I must say, it's a great progress compared to the stock ROM. The Tablet is so much faster in it's response to inputs and in all apps! The fun lost using the tablet ist back again!

Thank you again for your work!

Nevertheless I encountered some few issues which I want to report:

S-Pen does not work in all cases:

the left hardware button can not be activated by the pen

in several apps the keyboard does not come up, when the pen is used to select an input field

I miss the handwriting recognition of the keyboard as is in the stock ROM

can this be substituted by some alternative?

Thanks
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] MachineMasher:
Since I installed this successfully yesterday, I'm mostly loving it so far. :)

One issue that I've noticed is that in the Zoom app when my camera is on, there is a green bar on the left side of my camera , and the colours are distorted on the rest of the camera. Here is an image of what my camera looks like in Zoom:

I realise that this is an app-specific issue (Zoom), so this is less likely to be tested and might not be able to be addressed by the OS. I also note that the built-in camera app does not have this issue; the built in camera app takes pictures and videos with the correct colours just fine. However, this was not an issue when using the stock ROM.

Do other people have this issue, or does it work fine for other people? Should I be reporting this even though it is app-specific?

Thanks all.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Sage:
Any way to get this to pass SafetyNet or with Permissive no way?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Thanks for the report,

The button on S-Pen is recognized well by the system, but we can't use that because there is no app to handle the button event.

We can't use handwriting for a similar reason. It is a software side too.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
Yeah, I have noticed that issue but I couldn't fix that yet. Does anyone have a clue about this? :)
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
You can use HavocOS for passing SafetyNet. It can be done with Magisk Hide.
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Sage:
actually got it working on this ROM.. just needed Safetynet Fix and PropsConfig!
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] dom001:
Does this ROM support signature spoofing?
[Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &] Awesometic:
No, it doesn't. I added nothing about signature spoofing and MicroG into it.

But as far as I know that feature is a built-in in the HavocOS