yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] cviniciusm:
Hello,

For me, this function never worked, I have to restart in recovery and the search for the ROM on the lineageos_updater folder to get the ROM to update.

Enviado de meu Moto G (5S) Plus usando Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] b171leo:
+2 :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] corax2.05:
This is all still reported, but never changed.

For updates you can use the app "cyan delta", that works fine.

You can fix the lockscreen problem by yourself. You have to edit the build.prop.

But with the next update you will get a new build.prop and have to add the fix again.

https://xdaforums.com/showpost.php?p=72489839&postcount=429
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] loretta1980:
Thanx corax. That helps.

So i think, the unofficial version is the better won, because lockscreen turning works and i also have to boot into recovery by myself. Can use "cyan delta" with the unofficial version too?.

Or are there more differences to think about?

Is there a way to see the loudness slider all the time? The hardwaretoggles of the tab stuck everytime i press them.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] corax2.05:
Cyan delta only works with official versions.

I have no problems with my loudness buttons (official), sorry no idea.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] corax2.05:
You have to clean install. The official builds of LOS are signed so dirty install don`t work.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Jai Nanda:
Huge Thanks...

Works like a charm. Put life back into my old Tablet - thanks so much!

Found one thing that my help others - think it's an Andriod issue, not a particular issue with this ROM...

When connecting to a wifi extender, you need full location services switched on or it won't connect (ie full GPS location allowed). Weird, but true!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] loretta1980:
In both directions? At the moment i'm on official rom and i think the unofficial one is the better choice.

And i tried to use a OTG Adapter for HDMI. I think it is 11 pin, but its for an Samsung S4. It didn't work. Does somebody know wether i need a differnt adapter or does it not work with the latest roms?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
Can anyone tell me the original amp charging rate we got on oem samsung ROM when use to be able to 'fast charge'?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
picassowifi requires a 2.0 Amp/5.3 V
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] fast96:
Also try to keep the charging cable short. 1 meter cable works better for charging than 2 or 3 meter. :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
I actually have no cable issues. I am trying to increase the charge rate so that it charges at the rate of charge when running oem samsung build. I am back running official lineageos. Is there an official thread for our device? I'm tired of the device always system freezing for video and I've been trying and testing my own fixes.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
For Video problems perhaps you can try from buildprop (backup before!)

ro.media.enc.jpeg.quality=100

media.stagefright.enable-player=true

media.stagefright.enable-meta=true

media.stagefright.enable-scan=true

media.stagefright.enable-http=true

media.stagefright.enable-rtsp=true
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
Thanks for these settings. I might try them. I actually fixed the system freeze on video a week ago and have been testing since. If my fix ends up not working I'll try what you post.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] van_gogh:
If you will succeed, please kindly share your fixes with community. We will appreciate your efforts.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
One setting alone will fix the system freeze video issue. I am also testing a bunch of other settings like changes to 'dirty' virtual memory and battery charge rate. Note that I am running official rom at this time. Go into deathly adiutor and find virtual memory under kernel. Change swappiness setting to 0/disabled. Mine was previously set at 100. I recommend you DO NOT enable the apply on boot setting just in case something wacky happens. With that said on reboot this setting will not hold and you will have to disable swap again. There is also a 'profile' section where you can save changes you make or test. I've increased the charge rate and am testing it this week and will post more on that in future.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
If you set the swappiness 0 , there will be no swap memory(device need more ram sometimes & without swappiness,will have problem ) ... Τhe best setting "swappiness" in stock rom is 60...Ιf you use custom kernel,you can use & less...

In stock rom you can use Libidinoso kernel for picassowifi : https://xdaforums.com/galaxy-tab-pro-12-10-8/orig-development/kernel-libidinososc-kernel-t2857493

the best app for regulation the swapp is Ram Expander : https://play.google.com/store/apps/details?id=com.swapit.expander.de&hl=en (stock kernel are combatible )

(you can to find it & in Internet free ,without pay...Lol)

sry for english,I hope you understand me....

[this rom by exynos5420 team works very well on my device,may better than official builds & without video problems]
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
I know what swappiness is and use it in my linux system. We have 3gb ram on these devices. I've been testing almost 2 weeks no issues. Setting at zero won't cause a problem and feel free to to make no changes at all to your device.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
picassowifi has not 3gb ram , samsung says 2gb but in reality it is less from 2, (almost 1800)

when I was in stock rom,always using custom kernel...
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
Yes ...sorry you are right. 2gb in t520. I was thinking of my OPO. Still having zero issues with swappiness of 0 and I have tested with some large apps and games. I will give more details but I have also been testing underclocking and overclocking cpu for long time as well. Such as dramatically underclock cpu and watch hd video for long periods of time with no issues.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
Fixed the poor mic volume and in-app camera crashes (hangouts)

Hi ,

fresh of the boat here, but i thought i would share how i solved the low mic volume and in-app camera crashes.

First off all i downloaded a fresh nightly build from the Lineage website download.lineageos.org/n2awifi

This way the user can update his/her device through the user-friendly procedure

I then unpacked the zip and modified the build.prop file in the system folder

I changed following existing keys/values:

media.stagefright.legacyencoder=false
media.stagefright.less-secure=false

And added following key/values

ro.media.enc.jpeg.quality=100
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-rtsp=true

This solves the in-app camera crashes

I then converted the system.new.dat file to an .img file

You can install the tool to do that using

git clone https://github.com/xpirt/sdat2img

and then convert it and then mount it by running these commands (linux)

python sdat2img/sdat2img.py system.transfer.list system.new.dat output.img
mkdir output/
sudo mount system.img output/

I then modified the following file : output/etc/mixer_paths.xml

Below is an example of what i modified.

<path name="main-mic">
<!--
{ "Main Mic Switch", 1 },
{ "SPKOUTL Input 4", "None" },
{ "SPKOUTR Input 4", "None" },
{ "LHPF1 Input 1", "IN1L" },
{ "AIF2TX1 Input 1", "ASRC1L" },
{ "AIF2TX2 Input 1", "ASRC1R" },
-->
<!--
{ "IN1L Volume", 18 },
{ "IN1L Digital Volume", 128 },
{ "LHPF1 Input 1 Volume", 32 },
-->
<path name="channel-left" />
<path name="verb-voicecall" />

<ctl name="Main Mic Switch" value="1" />
<ctl name="SPKOUTL Input 4" value="None" />
<ctl name="SPKOUTR Input 4" value="None" />
<ctl name="LHPF1 Input 1" value="IN1L" />
<ctl name="AIF2TX1 Input 1" value="ASRC1L" />
<ctl name="AIF2TX2 Input 1" value="ASRC1R" />

<ctl name="IN1L Volume" value="50" />
<ctl name="IN1L Digital Volume" value="128" />
<ctl name="LHPF1 Input 1 Volume" value="50" />
</path>

Every path with mic in it has the last three lines at the bottom. I all adjusted them to

<ctl name="IN1L Volume" value="50" />

<ctl name="IN1L Digital Volume" value="128" />

<ctl name="LHPF1 Input 1 Volume" value="50" />

This solved the silent mic problem.

I then unmounted the .img file

umount output

Then converted it back to a .dat file again.

git clone https://github.com/xpirt/img2sdat
./img2sdat.py system.img tmp 4

This creates system.new.dat, system.patch.dat, system.transfer.list in directory tmp.

Copied the new files into the zip dir I unpacked the zip in originally.

I then zipped it all up again and pulled a set of micro gapps from the opengapps.org website and put then both on the sdcard of the tablet.

Flashed with twrp3.0.2 and done! :highfive:

I don't know where to look or who to talk to, but maybe these changes could be applied to the nightly build?

Because i have a sneaking suspicion that when the user updates the tablet, my changes will be overwritten... :rolleyes::D
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
I don't know where to look or who to talk to, but maybe these changes could be applied to the nightly build?

Because i have a sneaking suspicion that when the user updates the tablet, my changes will be overwritten... :rolleyes::D[/QUOTE]

(edit)__ unfortunately yes, when you get the new update these changes will be lost,and you have to do it again (unless, if they are incorporated into the new build as you mentioned) .....this is of course theme of the developers of rom,if they will do this or not...

sry for english
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] supachris:
The build.prop part can easily flashed with buildprop:

https://notabug.org/kl3/tweakprop

I use this all the time for enabling the navigation bar. I add the lines, and now the camera works! Great!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
True, but in my opinion because this is a build for a specific device this should just be working out the gate.

People at xda can take these steps to solve the problem, but not all people are this tech savvy.

Also, there are situations where you don't want to root a device. And therefore cannot easily change these settings.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] supachris:
Yes, I'm completely with you. But I'm afraid this would not be implemented. It's the same with the navigation bar. It's not clear why this is not available via setting by default. Many people use the tablet in portrait mode, and in this mode the hardware buttons are completely useless. Even the LOS on my S4 does have the setting for enabling the navigation bar. Confusing....
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] shakatu:
You could create and share a flashable zip fix in the meantime. That way even after someone updates they can flash the fix right after and it still works.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
I will look into creating a flashable zip fix, but as i don't have the device in my possession anymore I'm unable to test that zip.

Would someone else be interested in testing it?

Be aware that this might mean you have to completely flash your device if the zip doesn't work....
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] loretta1980:
is there a changelog for the latest rom lineage-14.1-20171104_034012-UNOFFICIAL-n2awifi.zip? What does the second number mean? Is it already rooted?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] nachordez:
I could try it!

Enviado desde mi SM-G930F mediante Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] cviniciusm:
Hello,

Are you enabling StageFright vulnerability on your device with this settings ?!

Enviado de meu Moto G (5S) Plus usando Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
No,is only if there is a problem camera or video problems sometimes...

it is not entirely certain that it will always help, but you can try if you have problem(need backup your currently settings buildprop before!)

( read & post #647 ,these settings included in zip)

___ for test if your device is vulnerable you can use: https://play.google.com/store/apps/details?id=com.zimperium.stagefrightdetector#sthash.8P4LSVhK.dpuf

sry for badly english
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
I wouldn't think so.

The Stagefright issue was solved in a security patch, which sould be already applied to the android version this rom is based on.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
I just created a flashable zip following this how-to : [Guide]How to make a flashable zip

I uploaded it here : View attachment lineage-14.1-n2awifi-AVFix.zip

This replaces build.prop and mixer-paths.xml file.

Can someone test this and let me know what the result was? :)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] shakatu:
Thanks,

I might try it out sometime. I've been staying on the official OTA from June because that's the last update I've heard everything seems to work. Didn't notice the poor mic volume until I tried to hangout with my wife in the hospital while i was away. Hadn't needed to use the mic before then.

I used to do a lot of work on XDA for one of this tab's predecessor (Tab 2 10.1) but lately I've stuck with if everything I use works, then why fix it? And kept the work for the younger guys. Heck, I've never once attempted to unlock the bootloader on my Nexus 5x, let alone root!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] nachordez:
I'm this days with a lot of work, and need my tab for some of it. But in a few days I'll have some time to do a nandroid backup and test it!

Enviado desde mi SM-G930F mediante Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Friend of Bill W.:
William,

tried to flash but getting error

E1001: Failed to update system image

Updater process ended with ERROR: 7

Im wondering if it has anything to do with the TARGET/PATH?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] loretta1980:
Would it be possible to combine the su-addon, the the lockscreen-turning fix and this one, so that we just have to add one zip after an update?

Or wouldn't it be easy for the developers to add these fixes?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Friend of Bill W.:
It would be highly appreciated if the devs would actually fix those ongoing problems cor once and all :p
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
Did you try the whole process, or only the flashable zip?

If you try the whole process i did, you have to make sure you zip the the folders and files in the root folder of the zip

If for example the folder where your files and folders for the zip are in is named LineageOS, then you need to go into the LineageOS folder, select the contents and zip that.

Don't zip the parent LineageOS folder, because then the installer executables in there won't be found and the process will fail.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Friend of Bill W.:
Only your flashable zip...
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
What's the version of your twrp?

Did you clear your cache or anything before trying?

I read up on this error and, of course, it can be multiple things.

Most suggest updating twrp and wiping cache/dalvik..
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
Forget about my questions.

I had used the updater script from the lineage rom, but this does things that are not needed for this zip.

Rewrote the script, can you try with this version View attachment Lineage-14.1-n2awifi-AVFix-v0.2.zip
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] shakatu:
I wouldn't include SU in any fixes, since they don't include it in the ROM itself.

Not everyone wants SU, but everyone wants a fully working ROM. I used to root everything but I stopped and haven't used root in almost 2 years and haven't missed it. I ended up seeing it as an endless tweaking and update cycle where I couldn't just use and enjoy my device. Plus whenever there were stability issues, it was harder to pinpoint when I had root. Was it because I changed a certain setting? Is it because one of the apps with root access have gone rogue? Now I'm just using unrooted Lineage (because Samsung left this tablet in the past without ever updating the OS), and it's quite stable using the official June 8th OTA. I very rarely have any system crashes. Like, I can use it for a month or so without it crashing.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Friend of Bill W.:
Nope, same errors

I had updated TWRP a while ago when I ran into update/baxup problems. After updating i also had error 7 and read about it. It turned out that the newer version of TWRP was fo blame and it was suggested to revert to 3.0.2 which works.

So im reluctant now to update TWRP just to lossibly run into mlre serious problemy and start fromscratch as the tablet might softbrick agin..
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WilliamTheHack:
Did you try with the new zip I uploaded?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] O_Yashiro:
I'm flashing my tablet for the first time. Used TWRP 3.1.1 and flashed the latest nightly build (lineage-14.1-20171111_032151-UNOFFICIAL-n2awifi) and everything is cool. I would just like to note the following:

- Screen is lagging (slow refresh rate/FPS?) when i move from one screen to another, one browser tab to another or play videos, which is pretty disturning tbh. Anyone experiencing this too?

- The multi tab menu that i used to have in stock has disappeared. It now behaves exactly like the mobile version (which i have on my Galaxy Alpha).

- Camera is not as stable (just like in my phone) and causes a total freeze, reboot or crashes after using it once or twice.

- I hear pitchy sounds with some music/videos (extremely annoying)

Please let me know if any of those issues are common. I will post again whenever i notice something else.

Also, if there is a more stable version for the SM-T520 i would very much appreciate anyone pointing me towards it (nightlies for this tablet is not something i'm looking for right now).
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Friend of Bill W.:
I have the same issues and questioned it a while ago but didnt get any reply so i thought its only me..!

---------- Post added at 23:43 ---------- Previous post was at 23:41 ----------

Yes, that's why i said: nope, same errors :crying:
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] O_Yashiro:
Alright. So the problem with samsung is all their proprietary drivers. On my phone, the person who create the ROM did had to use some blobs from other phones to barely get the camera working, and fingerprint sensor did not work. I'm guessing it's the same issue here.

So, unless Samsung provides drivers for this tablet for Android 7, or someone miraculously finds drivers compatible with it, i think the problem will persist for camera, sound and these weird slow FPS/frame rates.

Does anyone know if CM 13 is more stable than this ROM?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] atlharp:
Logcat or it didn't happen.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] nachordez:
Could anyone provide a link to the June the 8th build, that seems to be the last fully working one? I've checked the download site, but saw only more recent builds...

Thx

Enviado desde mi SM-G930F mediante Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] shakatu:
https://www.androidfilehost.com/?fid=817906626617947727

I still had it downloaded.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] daitalos:
Does anyone know if CM 13 is more stable than this ROM?[/QUOTE]

You can try with this last build Lineage13 (

just one test)

https://androidfilehost.com/?fid=385035244224412688 (nano or pico opengapps)

I think is fairly stable & fast..
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] charlesmarried:
Hello,

First of all, thank you for the rom.

I have one question: Anybody tried ScummvM app, when I load it,

it appears as a black screen and nothing happened

. Any idea?¿

Thank you!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] mjepson:
Isn't the SM-T520 PicassoWifi? Why is this called n2awifi? (Sorry if I ask a dumb question, just trying to avoid bricking my device)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] cviniciusm:
Hello,

Mine is picassowifi too.

I use n2awifi ROM since beginning.

Enviado de meu Moto G (5S) Plus usando Tapatalk
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] supachris:
Take a look into the Install script inside the zip file. There you can find that n2awifi is identical to picassowifi. As long as the download modus work, the device will not be bricked.

Since the correct recovery is installed, the install zip checks the correct device name.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] lepa71:
How is the battery compared to stock? Thanks
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Touz604:
I've been using this ROM for the past 24 hours and it's buttery smooth! thank you to the dev. latest update seems to fix some mic issue, but Hangouts crashes when trying to make a call and google assistant doesn't answer to my voice. using the search it seems a lot of people are experiencing mic issues. I guess the latest fix is not related to that?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] LaCruz:
I have no trouble with Google Assistent. I am using OpenGapps nano. [MENTION=5916960]Touz604[/MENTION]: Have you enabled authorization for mic for Google App?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] szwagier44:
I have had this Rom for 2 months and I don't have any problem with battery. Battery is similar like stock firmware.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] ZaeZae:
Very Nice

I flashed the latest builds and my only problem is the low volume on speaker but blue tooth volume is ok, I have this Tablet for 3 years and it seems the battery drain so quick even on Graved rom, bought battery at Newpower99 and replace the old one now I have 8 hours, thanks
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] crisis_trustee:
Wait lineage-15.1?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] van_gogh:
Wait when you stop using Google Translate and ask for ETA
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] Luxjack:
After wipe, flash rom, flash gapps and su no keyboard

Pls help. What am I doing wrong? System is starting but i get no keyboard on the screen, I wiped again and flashed rom, but still same Problem. Pls advise what can I do??
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] airtower:
Anyone else getting dropped frames when playing back from Netflix titles downloaded to an external SD card? I get this on every title and it's a mild annoyance. Changing governor settings seems to have no effect.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] WVUTampaAlum:
No. But I am running 06082017 build and io scheduler and elavator on cfq. I typically slow cpu to 900 for watching long movies to conserve battery.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Android Development] DanteGG:
I have been using these 'unofficial' builds for quite a while now, but the nightly updates have seemingly stopped mid-December. Should I switch to official for new security patches or are there some new builds also planned here?

Thanks!

EDIT: I see I have been too eager. Good to see more updates coming!