yashsingh1/xdaforums huggingface dataset:
[Galaxy Note Pro 12.2 Android Development] monkeydogger:
There does seem to be an issue with video decoding. There is an error message I receive when using he Virgin Media TV Control app which says "Unsupported Hardware Codec" meaning that the application won't run.

Thanks.
[Galaxy Note Pro 12.2 Android Development] joluke:
@@Valera1978 do you intend on keeping the rom up to date? Several issues were reported here and I don't see any update from you stating they are being looked at. BTW people, which bootloader version is everyone using? Can't get the room to boot.. Won't pass the lineage logo for nothing. Came from latest lollipop and nothing
[Galaxy Note Pro 12.2 Android Development] Stuggy:
I had twrp from a few versions back and I used that to flash this. I since updated twrp to the latest 3.4 I think.

I also had a bit of a problem getting it to boot past the initial Lineage screen. I had originally flashed the standard gapps but then went and did mini gapps I think it was and it booted. It is possible that the full gapps was still working away on loading on boot but it seemed that it took too long to me so I redid with mini as stated.
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
Mine is on P900XXS0BPL2.

Once tried LOS17.1 with BiTGapps probably installed with TWRP3.4 .

Booted fine but had to much issues when running.

So I switched back to 14.1 and for that I had to downgrade to TWRP 3.3.1
[Galaxy Note Pro 12.2 Android Development] Smartie36:
Anyone else finding this rom slow & laggy, I mean are we expecting too much really by installing android 10 on such old hardware, this tablet is 6 years old after all & hardware specs have gotten a lot better since this tablet was released.
[Galaxy Note Pro 12.2 Android Development] Stuggy:
Actually for me it seems to have settled down and I don't find it any slower than the 14.1 that I was on.

I still don't know whether the hardware video acceleration is included or not but the little bit of video that I have watched seems ok.
[Galaxy Note Pro 12.2 Android Development] xda@davidsaylor.com:
Installation problem

May thanks [MENTION=2047373]Valera1978[/MENTION].

I have not previously installed custom ROMs on my devices. Now I am trying to install LineageOS 17.1 on my Galaxy Note Pro 12.2 and thus far have been unable.

I used ODIN to flash the latest TWRP to the boot loader and booted to recovery (so Samsung system boot would not replace TWRP with stock recovery) and TWRP recovery is stable. In TWRP, I installed SuperSU from a zip file on the extSD. After booting into the stock system, I was prompted to finish rooting, which I did using TWRP. I made another backup at this state. Once I was able to reliably boot into recovery or normally (stock system), I booted to recovery and made a backup of my stock image. I have reliably flashed Samsung stock image, which boots to the initial setup process, and restored by backed up image, which boots to the previously configured (and rooted) state.

At this point I downloaded the Lineage 17.1 image zip file onto the extSD card and tried flashing it from recovery. While unzipping the image, the recovery screen shows a couple of error messages, along the lines of image is 'for device v1awifi but this device is .' and flashing fails. I believe at this point rebooting hangs with the Samsung logo animation, but I have been able to boot recovery and restore my previous rooted Samsung stock state. Custom ROM Manager confirms my device Codename is v1awifi.

Am I missing some setting in TWRP that would tell it to install this ROM anyway? Any idea why it doesn't seem to be able to confirm that my device matches 'v1awifi' during flashing? Would this be more likely to success if installing from the Windows PC using ODIN? or ADB sideload? I have Custom ROM Manager and prefer to work from the tablet using TWRP recovery and the images on the extSD card. Should I try flashing the older LineageOS 14.1 image that I've seen some posts on?
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
Which stock ROM are you coming from.

Lollipop?

Whkch TWRP are you trying with?

Don't use SU as it's outdated.

Magisk is the choice.
[Galaxy Note Pro 12.2 Android Development] xda@davidsaylor.com:
Thanks for following up.

I have the Samsung LRX22G.P900XXS0BQA1 build - Android 5.0.2, TWRP v2.8.7.1.

Thanks for the tip on SU. I'll look at Magisk.
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
Your TWRP is ages old.

For 17.1 you need 3.4.0.
[Galaxy Note Pro 12.2 Android Development] xda@davidsaylor.com:
You are exactly right. I installed the official TWRP app, backed up my version, flashed the latest version to recovery, rebooted to it, took another backup of system,boot,data, and installed LineageOS. Works like a charm.

For now, I'm going it without Google apps or play services. I have my apks from SuperBackup, and installed XDA Labs.

Thanks for LineageOS, and all the help.
[Galaxy Note Pro 12.2 Android Development] SimonSamaan:
Hi, I would like to know how stable it is, and if the spen works perfectly
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
Of course not as full spen support is only existing when either running stock ROM or using a bought app.
[Galaxy Note Pro 12.2 Android Development] Kcginc:
Is there any further development in this thread?

Not rushing anyone but I'm just curious if it's actually happening.

If the DEV is busy I totally understand.

Thanks
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
@Kcginc the dev has not been seen since the end of August.

The situation in his country is quite chaotic and I hope he has no problems with officials.
[Galaxy Note Pro 12.2 Android Development] cem_ari:
Hi. Thanks for your work.

I have installed it yesterday and i'll try with ElmScan ELM327 USB. It is a engine checking device. I'm using it for 10 years in Windows based pc. I hope it will work in this ROM.
[Galaxy Note Pro 12.2 Android Development] Kcginc:
Oh - I didn't know....

I hope he is OK.

He is an amazing developer.
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
I hope so too.

He's really great.
[Galaxy Note Pro 12.2 Android Development] Mateja10:
I would like to install it this weekend, because I have been with the tablet for two months with a new battery stopped because the android it has is very very old. Could you help me? Thank you
[Galaxy Note Pro 12.2 Android Development] xdaSEx10:
Great ROM. Thanks OP. Does anyone know how to turn off s pen pointer (when hovering) without root? Thanks very much.
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
@Mateja10 Here is a very good description what to do.

I followed it when getting my P900 and everything worked well.

As SU is no longer supported, you need to flash Magisk to get root.

Btw I'm still on that ROM as I wanted to keep the camera (Skype) and it's getting updated regularly.
[Galaxy Note Pro 12.2 Android Development] Mateja10:
One doubt, I would like to add the latest version of Android with this post that Varela1978 made. It's not possible? Thanks
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
Of course this is possible.

Just replace the mentioned ROM with valera's version.

I don't use that because I want to have a working camera.

Sent you a PN as well.
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
@Valera1978 thanks for your work.

I was worried as you were absent for quite a long time.

Good to see you're back.

I made a clean flash of this ROM which was very stable for the last hours after installing it.

I noticed a small bug which is that traffic isn't shown in the status and Cool tool as well doesn't notice any traffic activity.

Another thing is that I can't get AFWall+ to work.

Don't know yet what's wrong but will inquire further.

Camera app at least shows a pic on the screen although it's of course not working. Hope you can manage that in the future.

Thanks again and I wish you a happy new year soon.
[Galaxy Note Pro 12.2 Android Development] bigtelv37:
For some reason, my wifi goes in and out. and it is inconsistent. The rom I had before never had this issue. Anyone else dealing with this. And is there any fixes?
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
It's really peculiar that I can't get AFWall working.

On my T325 with LOS17.1 by @Valera1978 as well it does.

So to me it rather seems ROM related.
[Galaxy Note Pro 12.2 Android Development] libfab:
Flashed OK with latest TWRP.

Works fine, except for camera.

WhatsApp works fine but only receives video from caller and shows cameo front video from receiver (thumbnail). This shows that camera does work to some extent unlike what is otherwise reported. Yet caller does not receive it, just a green screen.

Issues installing stock gapps. Nano version did work though.
[Galaxy Note Pro 12.2 Android Development] Rudawg:
After cursing the stock OS and contemplating trying Lineage on my SM-P900 for years, I finally flashed @Valera1978's ROM ( 20201221: december security patch ). While thrilled that I didn't brick the tablet and it seems faster, I immediately installed Squid to try the S pen and unfortunately it looks like there's no palm rejection. However what is interesting is that a fix has already been implemented for the SM-P905 (e.g. https://xdaforums.com/t/rom-sm-p905...1-android-10-q-20201220.3978923/post-83281005) that goes back to this post (https://xdaforums.com/t/fix-enable-palm-rejection-for-spen-on-non-stock-roms.4042799/). It seems like a very basic change of a few lines of code but I guess this has not made it into @Valera1978's most recent build. My primary use for the tablet is based on the S-pen and so I really want/need palm rejection. Beyond flashing pre-built ROMs, I have minimal/zero knowledge in compiling but have already started installing VirtualBox and Ubuntu, trying to incorporate the palm rejection fix for my SM-P900 in desperation. However, I figured it would be worth asking here if anyone more experienced can do this (or already has!) and can share the built ROM - hopefully it would help others like me too!
[Galaxy Note Pro 12.2 Android Development] Kostareka:
Hi @Valera1978

Can i build rom for note 3 using that kernel
[Galaxy Note Pro 12.2 Android Development] shardsx:
Using @Valera1978's code, I have compiled the SM-P905 rom to get palm rejection going, along with a couple other fixes. Like you, I had to learn from scratch and I guess it's actually not completely daunting after your environment is set up, but I'm by no means even proficient. Still, if you have questions I'll try my best to answer.

The thing to pay attention to with your development environment is having enough disk space. Similar to you, I use a virtual machine to set up my dev environment and I had to allocate in the neighborhood of about 200GB of space. You can get by with less than that, but I think after all is said and done, I had about 30GB remaining after compiling and I like the extra headroom. Also (and maybe just due to the age of my computer even though I'm doing this on SSD) it takes a very long time on the first compile, so be patient.
[Galaxy Note Pro 12.2 Android Development] Rudawg:
Cool, thanks very much for the encouragement - I will try again when I get a chance. May I ask what other fixes you added in - I wonder if they might be relevant for me and my SM-P900. Certainly the most important thing for me is the low-level functionality of the S-pen (e.g. palm rejection, accuracy within apps e.g. Squid).
[Galaxy Note Pro 12.2 Android Development] Rudawg:
Thanks a lot for the reply - indeed I probably won't need your extra fixes but thanks for explaining. I completely understand your constraints. It is crazy that it takes that much space, I'll be careful with that. I'll report back with any questions or progress!
[Galaxy Note Pro 12.2 Android Development] jodev:
Hey Nice to know! Does this palm rejection fix allows to use the spen and fingers together? It used to crash earlier. Can you share your build & code? Push the projects you modified to a github repo, update your local manifest and share them. I would love to build and test them.
[Galaxy Note Pro 12.2 Android Development] shardsx:
I do recall reading in this thread that the SM-P900 will crash with S-Pen and touch. I'm using Valera's SM-P905 code and I have not had any crashing or rebooting problems caused by combination of touch and S-Pen input, or palm rejection. So far everything works the same as Lineage 14.1 or Touchwiz 5.

I'm not a developer and I don't know how to use Github beyond the instructions in the official Lineage build guides and what Valera has posted in his repo, but I'll share the files that I've modified as attachments and indicate the path where those files are from:

For fixing touch input:

android_source_code_root\frameworks\native\services\inputflinger\InputReader.cpp

android_source_code_root\frameworks\native\services\inputflinger\InputReader.h

For fixing the DualShock4 controller input lag:

android_source_code_root\system\bt\bta\include\bta_hh_api.h
[Galaxy Note Pro 12.2 Android Development] nachomagic:
Hi mates

I'm looking for a working camera rom. I've tried serveral roms with o sucess. I know that this is not the pace to ask, so apologice but after readiing your message I would like to know the working camera rom that you are using.

Thanks in advance and sorry again
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
@nachomagic no need to be sorry.

My P900 is on latest vanilla Nougat by @thompatry.

Very stable and best for me since I got my device two years ago.
[Galaxy Note Pro 12.2 Android Development] nachomagic:
Thanks

This is the ROM I was using but from 2019. I Thought there is not nighttlies o_O

I've just updated to the latest version and the camera now works!!!

Thank you and thanks @thompatry
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
@nachomagic glad I could help.
[Galaxy Note Pro 12.2 Android Development] Ludespeed:
Does anyone know if this rom will work with the galaxy tab pro 12.2?
[Galaxy Note Pro 12.2 Android Development] bemanet:
this will works only with Galaxy note pro P905...
[Galaxy Note Pro 12.2 Android Development] bmwdroid:
I think you mistyped the last digit.

It's a P900 ROM and thread.
[Galaxy Note Pro 12.2 Android Development] bemanet:
oh sorry, you're right...o_O
[Galaxy Note Pro 12.2 Android Development] mattgod69:
OK... i have not done this for a while (I’m currently on Lineage 14.1 on my Note Pro 12.2 (P900).

I am thinking to update to 17.1 now…. I think it is stable?

When i download the ROM is the following:

LineageOS Builds

5. 20201221: december security patch: https://drive.google.com/file/d/1tYzL31kIA9dA3Cpe66h2AUD57kT9r5eY/view?usp=sharing

Or is this just a security patch? This might be a daft question….sorry.

or... do i need to download all five links?? Do they need to be in any set order?

I assume the GAPPS is the ARM Platfrom, Android 10 and Stock Variant? What is the difference between super, stock and full etc? i think my tablet is 32 bit?

When transferring to my device I assume they are put onto the storage card?

I currently have TWRP 3.3.1 installed. Do I need to update this before I do anything? How do I downgrade TWRP should I need to go back to 14.1?

Sorry if these are silly questions and many thanks for any comments and tips….

Matt
[Galaxy Note Pro 12.2 Android Development] dcarvil:
This ROM is mostly stable. The main lack is the camera does not work.

All you need is "5. 20201221: december security patch" - that is the entire ROM.

Yes, GAPPs, ARM, Android 10. The Variant is whatever you want - I use PICO. The difference is how much Google bloatware is installed. Aroma is the most, Pico is the least. Any apps that are not included in Pico can be downloaded from the Play Store if you want them. If you use a larger variant and have problems, try a smaller one. The tablet is 32 bit.

Putting the downloads on the storage card is where I put them.

I'm using TWRP 3.4.0. I'm not sure if updating TWRP is necessary, but I think it is recommended. Downgrading TWRP should just be a matter of using TWRP to flash 3.3.1 to Recovery, then reboot to recovery.
[Galaxy Note Pro 12.2 Android Development] mattgod69:
Many thanks for your help and info.... just done 17.1.... its at boot stage.... seems to be taking a while but i recall this can happen...
[Galaxy Note Pro 12.2 Android Development] mattgod69:
How long should it take to boot for the first time? Mine seems to be hanging on the Lineage graphic in the centre of the screen? Many thanks.
[Galaxy Note Pro 12.2 Android Development] mattgod69:
Sorry, another quick question.... after installing the ROM and GAPPS should you clear cache etc immediately before rebooting?
[Galaxy Note Pro 12.2 Android Development] dcarvil:
I don't know if it is mandatory or if it helps, but I always clear cache and dalvik before rebooting. I also clear it before flashing GAPPS.

I haven't timed the boot, and it has been a while since I upgraded, but I think 5 minutes should be sufficient for the first boot. I'd wait 10 minutes to be sure. If you still can't boot, try flashing again with Pico GAPPS.
[Galaxy Note Pro 12.2 Android Development] mattgod69:
I just downgraded to latest 14.1 because 17.1 was just hanging on the lineage logo... does anyone think this might be because i needed to update TWRP (I am currently using 3.3.1). Cheers. Matt

Thanks for the info.... flashed with pico and i chose not to install the TWRP app at the same time as the GAPPS. All seems ok now, booted in like 5mins....
[Galaxy Note Pro 12.2 Android Development] dcarvil:
The TWRP app was your problem. Never install that app.
[Galaxy Note Pro 12.2 Android Development] nsiti:
Hi, would microG work with this ROM?
[Galaxy Note Pro 12.2 Android Development] mattgod69:
.

sorry...I'm not sure....I have used google play... What is the advantage of microg?
[Galaxy Note Pro 12.2 Android Development] nsiti:
MicroG is more private.
[Galaxy Note Pro 12.2 Android Development] mattgod69:
I am finding that the device restarts quite a lot... Especially when using the back button and watching you tube using opera. Also when using the s pen. Not sure if others have an this?
[Galaxy Note Pro 12.2 Android Development] archimime:
Hi all, thanks for this wonderful thread with all its helpful details and ROMs.

I'm having a little difficulty getting an SM-P900 set up with LineageOS here and I'm hoping that some of you might be kind enough to offer suggestions on getting it working.

I've followed broadly the directions here and have TWRP 3.5.0 (twrp-3.5.0_9-0-v1awifi.img) set up on the device using Heimdall 1.4.1. Using TWRP I've attempted to get LineageOS installed and working on the device.

I've attempted to use both lineage-17.1-20200910-UNOFFICIAL-v1awifi.zip and lineage-17.1-20201221-UNOFFICIAL-v1awifi.zip and both appear to result in a boot loop when the device is switched on.

I was toying with the idea of attempting to modify lineage-17.1-20200815-UNOFFICIAL-viennalte to force it to install but would anticipate the possibility of this being unsuccessful. I would consider attempting to compile LineageOS also, but this is a process with which I am unfamiliar.

Are there any tricks I might try to get the device working? Many thanks
[Galaxy Note Pro 12.2 Android Development] dcarvil:
I've always used TWRP, Install, select the lineage zip, and flashed it. I don't know why those instructions say use "adb sideload".

What ROM was installed when you started? If you had a very old stock ROM, you might not have the Lollipop bootloader installed. The Lollipop bootloader has been a requirement for a long time.
[Galaxy Note Pro 12.2 Android Development] archimime:
Thank you very much for your thoughts on that. Yes, installing from a ROM ZIP is straightforward. I suppose the sideloading is used to reduce the steps.

The initial ROM was Android 4.4.2, so it sounds like you are on to something! I assume I'll need to reflash Android 4 or 5 onto the thing prior to LineageOS. Would it make sense to attempt to flash Android 5 on directly, and then to attempt a flash of LineageOS? What would be a sensible path to try?
[Galaxy Note Pro 12.2 Android Development] dcarvil:
Flashing the stock Android 5 ROM should work. See the "Bootloader Information" section of the first post in this thread for info on updating only the bootloader.

https://xdaforums.com/t/rom-p900-un...0-android-6-0-1-marshmallow-20160406.3366834/
[Galaxy Note Pro 12.2 Android Development] Jogar99:
Will this flash work with a Verizon 12.2 pro tablet?
[Galaxy Note Pro 12.2 Android Development] chicopc:
Hi. Rom is working fine for me. However, content in 1080p60 or above lags for some reason... Is this happening to any one else?

Cheers.
[Galaxy Note Pro 12.2 Android Development] nilse:
You are a hero!

I gave up expecting a newer ROM than Android 7 for the P900.

Thanks a lot for giving me back a bit of fun with my old ass tablet :D
[Galaxy Note Pro 12.2 Android Development] Joonmin:
Palm rejection is not working at all And it really often suddenly quit using s-pen.

do u have any plan to solve this problem?

Thanks
[Galaxy Note Pro 12.2 Android Development] NeedleGames:
Same here. Youtube @ 30fps lags until you skip or go back 10s, videos @ 60fps are shown @ 8fps on average.
[Galaxy Note Pro 12.2 Android Development] jehu17:
Same problem here. I've read on several forums, including xda, about apps capable of overclocking CPU and GPU on sm-p900, "synapse" for example. People talk about them like its a common knowledge. But there are no download links or any kind of comprehensive reviews on those apps. Any information,like download links and/or installation instructions would be awesome to have.

Looks like there is some info here:https://xdaforums.com/t/zip-synapse-script-universal-kernel-manager-v3-8-1.2736986/
[Galaxy Note Pro 12.2 Android Development] chicopc:
Interesting stuff! But, wouldn't overclocking the CPU and GPU, result in high temperatures (etc...) thus deteriorating themselves more quickly over time?

Is this (lagging in 60fps) a problem of the actual performance of the tablet or of the rom?
[Galaxy Note Pro 12.2 Android Development] GenghisKhan67:
Tried this on my old SM-P900, works well for the most part, but some apps I really like crash frequently, especially Marvel Unlimited (I know, I'm just a big kid at heart...). Any advice on how to fix this issue ? Maybe a kernel setting tweak ?
[Galaxy Note Pro 12.2 Android Development] Zero_Shadow:
Sorry for the noob quick brain isnt working right now.

For installing Magisk using the canary build for this device, when I go to install it ask for the .img to patch. Which img file are you using to patch are we to use the boot.img found in the ROM or are using something else?

Or should I be installing Magisk via recovery?
[Android Q&A, Help & Troubleshooting] Ivan-F.:
Hi community.

I have SM-A115F/DSN (Galaxy A11) running Android-10.

Can I root it and, if so, how?

Maybe someone has already rooted the same device.

I am a beginner and I need a complete step-by-step method. Thank you in advance.
[Android Q&A, Help & Troubleshooting] Raiz:
Hi,

You can root "any" device with a thorough Google search.

Here what I found :

https://magiskupdate.com/root-samsung-galaxy-a11/
[Android Q&A, Help & Troubleshooting] Ivan-F.:
Thanks for your answer. Yep, I have seen this site. I even left a comment there that instruction contains a broken link. You can use your mouse wheel (if using desktop) or swipe down (if using smartphone) to scroll down to see comments there. They fixed the issue, but they still have instructions that does not work. I apologize for mistrusting your link, but I am afraid to follow the incorrect instructions on this site. Since people say that this can lead to the fact that the phone stops working at all. No offense.