yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series Questions & Answers] glennza:
S'all good. I wiped System and reinstalled the ROM. Working now.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Well I have the February security patch update built, but have problems uploading it to sourceforge the last couple of days. Will try again over the next few days.

On the audio over bluetooth problem, I setup my linux computer with a blue tooth usb dongle and turned it into a bluetooth sink so it acts like a speaker (see instructions below) and I'm able to replicate the problem. However, I spent a few days trying to fix it and so far, I'm unable to. I will look at it again when/if I have time. I may not be able to fix though.

Turn Your Linux PC Into Bluetooth Speakers For Your Phone - OSTechNix

Do you know you can turn your Linux PC into Bluetooth speakers for your phone using Pulseaudio? Yes, you can use Linux PC as Bluetooth speakers for a phone.

ostechnix.com

.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210215-UNOFFICIAL-gt510wifi.zip. It's at

retiredtab - Browse /SM-T550/17.1 at SourceForge.net

sourceforge.net

Feb 15, 2021 release notes.

1. Feb 5 security patches

2. Whatever LiineageOS changed since last January release.
[Samsung Galaxy Tab A series Questions & Answers] layman22:
Thank you sir!
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Audio over bluetooth is now fixed. The fix will be added to the March security patches. The problem was that it needs android.hardware.audio@5.0 hal/hidl and didn't work with android.hardware.audio@2.0 for whatever reason.

If you cannot wait until the March security patch for this fix, you can download this file called

lineage-17.1-20210221-UNOFFICIAL-gt510wifi-working-bt.zip

If you don't use audio over bluetooth, there's no need for you to download the above file.

https://sourceforge.net/projects/retiredtab/files/SM-T550/17.1/
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
Thank you @retiredtab for all your work on the T550 . The bluetoooth audio is working perfectly.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New image called lineage-17.1-20210307-UNOFFICIAL-gt510wifi.zip

March 7, 2021 release notes

1. Mar 5 security patches.

2. Whatever LiineageOS changed since last February release.

3. audio over bluetooth fix incorporated. I had to use the audio.hardware@5.0 hal.
[Samsung Galaxy Tab A series Questions & Answers] Schaagi:
Thank you so much for your valuable work. Since today I use the tablet every day without any issues. (y)

Regards

Schaagi
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
The T550 rom is #1 out of all my builds with 258 downloads since Jan 1 and the #2 is the T560NU with 247. So T550, which I don't even own, is used by a lot of people. USA #1 with 57 users and Germany #2 with 56. Users from 37 different countries use this rom.
[Samsung Galaxy Tab A series Questions & Answers] ncmonteiro:
Last update runs like a charm (thank you very much for the Bluetooth, and all)
[Samsung Galaxy Tab A series Questions & Answers] dstars33:
Does anyone else notice when they use the volume rocker, the tablet goes to sleep after a few seconds? A minor annoyance.

Edit: It also occurs when setting the volume using the volume panel in quick settings. It doesn't happen when setting the media volume using Settings.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
What was your previous rom? Did you do a clean flash and format data?

If you can make this happen consistently, take a logcat.

# hookup microusb cable to tablet and usb to computer
# clear out logcat
adb logcat -c
# now start logcat and send to file
adb logcat > volume.txt
# use volume rocker up, wait 10 seconds, rocker down, wait 10 seconds.
hit Ctrl-C to stop logcat
#upload here
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
And what rom image are you running? I have released monthly patches so I have no idea which one you are running.
[Samsung Galaxy Tab A series Questions & Answers] dstars33:
Your latest ROM and yes, a clean flash. I always update when you release update. I'll try to get you a

I'm using 2/15. I am updating to latest now. I originally clean flashed your first one and dirty flash the updates. If the issue persists after the update, I will try to get you a logcat. Thanks.
[Samsung Galaxy Tab A series Questions & Answers] steje:
Hello,

my TM 550 was very slow so I search for a ROM an found this here.

Now, I rooted my Tab, flash recovery and your Rom.

Works perfect for the first try. Any chance to turn off the navigations buttons?

Thank you so much.

Greetings from Germany

Jens
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Your logcat shows magisk installed. Since no one else has reported this and I have never seen it happen on my own tablets, I suggest you do a completely fresh install. Wipe everything and format data. Then, just install the rom with nothing else (no gapps, no magisk). Then test volume rocker and see if device pauses. If it doesn't, then it's one of your apps causing the problem.

If it does pause with just the rom, try another rom to see if it happens. From these 2 tests, you should be able to determine if you have a hardware problem or it's the rom.
[Samsung Galaxy Tab A series Questions & Answers] dstars33:
Did a fresh install (formatted system, data, cache). No Magisk installed. Immediately tried the volume rocker and same issue. It appears using the rocker or quick settings volume panel causes a system ui crash. Oh well. Thanks for looking into this. I can live with it. The rest of the ROM is great.
[Samsung Galaxy Tab A series Questions & Answers] glennza:
Had to give up on this. All apps stripped to a bare minimum but can take up to two minutes for GMail or Google News (etc) to load. Reformatted and reinstalled but still the same. Thanks for trying though.
[Samsung Galaxy Tab A series Questions & Answers] RandomAndroidTinkerer:
Dear @retiredtab,

thank you so much for your incredible work!

I read everything you wrote regarding the T555 and I am trying to create a T555 build on top of your work here.

Of course I tried simply using your builds, but the screen stays black and it freezes (as expected).

Using your repos and aala27's repos I managed to build a config that resulted in a buildable LineageOS that I could install and that shows the Lineage boot animation but crashes/reboots after a while.

I know that you do not provide support for this, I am trying to most humbly ask for a few pointers to where I might look.

- What is your current local_manifest/roomservice? I could not locate this in your Github and used one posted by aala27 in a different thread, but it might be "off".

- Did you extract the required proprietary files by hand from stock ROMs or is there an automated way? I have "SM-T555_1_20190103084053_we4a668guy_fac" with T555XXU1CQHA/T555XXU1CRG1 that I know works on my T555.

- The repo "vendor-samsung-gt5note10wifi" in your Github only contains a branch for Lineage 18.1, is that intentional?

Fyi, my forks for the GT510LTE (SM-T555) I currently maintain here: https://github.com/blizzard4591?tab=repositories

I am willing to put in some time and effort to make this work, but I just do not know enough to do it efficiently.

If you can spare the time for a few hints, I believe I can make some progress!
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
For those following along with the T555 build, see

https://xdaforums.com/t/need-help-building-a-sm-t555-gt510lte-lineageos-rom.4255243/
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210411-UNOFFICIAL-gt510wifi.zip

April 11, 2021 release notes

1. April 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/307454

2. Whatever LiineageOS changed since last March release. Nearly 59,000 out of the 70,000 files had to be recompiled due to the last set of changes.
[Samsung Galaxy Tab A series Questions & Answers] Schaagi:
Hello Retiredtab

Thank you for the new image. Works as usual precise as a Swiss watch :D

As I have seen, there is in the meantime someone who builds an image for the T555. Since I own such a tablet myself, I am of course very interested.

As you told me last time, you are working on a new image for the T800, any success yet ?

Is there a link where I can follow this ?

Friendly greetings

Schaagi
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210509-UNOFFICIAL-gt510wifi.zip

May 9, 2021 release notes

1. May 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/309564

2. Whatever LiineageOS changed since last April release.
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
@retiredtab thank you for this update. It is working perfectly.
[Samsung Galaxy Tab A series Questions & Answers] jfora:
Thanks for the new build.

What is the SELinux policy of this version?
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
For 17.1, SELinux is permissive. If this is not an acceptable answer for you, do not use this rom.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
The reason for why 17.1 SElinux = permissive is because the msm8916 team made it permissive on purpose as per

https://xdaforums.com/t/rom-sm-t350...alaxy-tab-a-8-0.4158163/page-11#post-84779013

SELinux is Disabled By Default · Issue #44 · Galaxy-MSM8916/android_device_samsung_msm8916-common

please turn selinux on by default in msm8916

github.com

I have NO IDEA when or if they will make it enforcing as I'm using their repos to build the rom.
[Samsung Galaxy Tab A series Questions & Answers] Inti31:
Wow, can't belive, that my old SM-T550 is running fine with Android 10 (I used the latest rom (lineage-17.1-20210509-UNOFFICIAL-gt510wifi.zip)). very good job!

I installed Nova Launcher with compagnion app - which works like a charm... and th ebest thing, Kodi 19.1 with LifeTV (SAT-IP)) runs fine.

just one thing... It is possible to root, if yes, how?

Before I installed this version, I had the stockrom, which was rooted with super su.

Thx for any suggestion how to do this.
[Samsung Galaxy Tab A series Questions & Answers] damismtz:
If it is possible to root the device with the last rom.

To be able to root the device you need to download Magisk Manager using TWRP.

( https://magiskmanager.com/es/ )

View attachment 5318251View attachment 5318253
[Samsung Galaxy Tab A series Questions & Answers] rekibor:
Hi,

I just installed the rom coming from virsys lineageOS android 9 which I used for quite some time now. Just wanted to say that this los 17 rom is amazing, thanks for your work!

Cheers,

rekibor
[Samsung Galaxy Tab A series Questions & Answers] breversa:
I just found out this thread and I'm eager to try this ROM in the next days ! Thank you @retiredtab !! :D
[Samsung Galaxy Tab A series Questions & Answers] bilatche:
does anybody knows where is the link to download the latest build ? can't find in the first page...
[Samsung Galaxy Tab A series Questions & Answers] breversa:
It's no longer on the first page, it's here : https://xdaforums.com/t/open-beta-for-17-1-unofficial-lineageos-t550-rom.4204807/post-84986203
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210615-UNOFFICIAL-gt510wifi.zip

June 15, 2021 release notes

1. June 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/312240

2. Whatever LiineageOS changed since last May release (about 6000 files had to be recompiled).
[Samsung Galaxy Tab A series Questions & Answers] VLHorsorEM:
Thanks for creating this for us, retiredtab. Higly appreciated.
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
Worked perfectly. Thank you @retiredtab for all your hard work!
[Samsung Galaxy Tab A series Questions & Answers] Peabody0815:
Hello everyone, and especially hello @retiredtab

I just found this this ROM/Thread from the "old" thread from virsys .

Can't wait to try this one.

Hopefully, it will manage to revive my old SM-T550 so that I can give it to my mother-in-law. :)

One question though: Seeing that it got quite a few updates since the initial post, is TWRP 3.4.0.0 still the recommended version or should/could I use the latest version 3.5.2.9 (also listed on the page you linked)?
[Samsung Galaxy Tab A series Questions & Answers] VLHorsorEM:
I used TWRP 3.4.0-0 for the virsys rom and upgraded to TWRP 3.5.2_9 to flash this ROM. I did not try it with 3.4.0-0, though. because it is not much effort to upgrade.
[Samsung Galaxy Tab A series Questions & Answers] Peabody0815:
Thanks for the reply.

Now all I need is a step by step guide on how to flash the OS.

It has been a few years again, and I completely forgot again. :p

EDIT: Managed to almost brick my tab twice, but It's running now, and it looks really great!

Awesome work! Thank you very much!
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
Is there any way to boost the volume by reconfiguring the max volume that can be set using the rocker switch? Some times some programs I watch have very low volume.
[Samsung Galaxy Tab A series Questions & Answers] Peabody0815:
Hey again,

i was able to test the ROM (together with the GAPPS Mini version) on my SM-T550.

Am I the only one that experiences extrem lag/sluggishness with this rom?

EDIT: Okay! I think I figured it out.

I reinstalled the ROM but this time, I only used the PICO OpenGAPPS.

Now it runs super smooth and I couldn't be happier about it!

For anyone having the same issue: Don't install the Pixel Launcher/UI.

I am pretty sure that's what slowed my T550 to a crawl.

Thanks again @retiredtab
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
I tried changing the values of

android_device_samsung_gt5note10wifi/configs/audio/mixer_paths.xml at lineage-18.1 · retiredtab/android_device_samsung_gt5note10wifi

Contribute to retiredtab/android_device_samsung_gt5note10wifi development by creating an account on GitHub.

github.com

but it made no difference on my P550. You can try editing those values on T550.

1. Boot into twrp.

2. Mount system partition.

3. adb pull /system/vendor/etc/mixer_paths.xml

4. Edit mixer_paths.xml (try changing 84 to 93).

5. adb push mixer_paths.xml /system/vendor/etc/mixer_paths.xml

6. reboot into system
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Post #1 instructs you to install pico. I don't even know where you got gapps mini. Mini is not even an option to download for opengapps for Android 11.

Edit. Oops, my brain is focused on Android 11, not 10. You will see why in a few days.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210712-UNOFFICIAL-gt510wifi.zip

July 12, 2021 release notes

1. July 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/313448

2. Whatever LiineageOS changed since last June release (about 4500 files had to be recompiled).
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
Thanks @retiredtab will try that out
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
You can also try the opposite. Try making it quieter by lowering the number 84 to 44.

It's my understanding that increasing/decreasing the value by 3 is a dB scale. That is, when increased by 3 dB, the human ear thinks it's twice as loud. 84 -> 87 -> 90 -> 93 dB should be a noticeable difference in sound, if it works.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
For those who want to try 18.1 ALPHA, see

https://xdaforums.com/t/unofficial-...or-galaxy-tab-a-sm-t550-july-10-2021.4305889/
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
I found various keys in mixer_paths.xml which had the value 84 and changed all to 93 but it did not have any effect.

Here are the keys I changed. Dont know if I did it correctly

Line 52: <ctl name="RX1 Digital Volume" value="93" />

Line 53: <ctl name="RX2 Digital Volume" value="93" />

Line 54: <ctl name="RX3 Digital Volume" value="93" />

Line 55: <ctl name="IIR1 INP1 Volume" value="93" />

Line 56: <ctl name="IIR1 INP2 Volume" value="93" />

Line 57: <ctl name="IIR1 INP3 Volume" value="93" />

Line 58: <ctl name="IIR1 INP4 Volume" value="93" />

Line 62: <ctl name="DEC1 Volume" value="93" />

Line 63: <ctl name="DEC2 Volume" value="93" />

Line 490: <ctl name="RX1 Digital Volume" value="93" />
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
I don't know why it's not working. Can you use the app AudioFX that's built into LineageOS and increase the volume that way? I use it to add some bass and reduce the treble on my P550. I find the treble too high so I know AudioFX works and it may boost your volume?
[Samsung Galaxy Tab A series Questions & Answers] cdza1971:
AudioFX did the trick, thanks again @retiredtab !
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
I know the area to look around in the mixer_paths.xml, but not sure why it won't change the loudness. I may look at it again a bit later.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210807-UNOFFICIAL-gt510wifi.zip

Aug 7, 2021 release notes

1. August 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/314572

2. Whatever LiineageOS changed since last July release (about 5400 files had to be recompiled).
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20210917-UNOFFICIAL-gt510wifi.zip

Sept 17, 2021 release notes

1. Sept 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/316083

2. Whatever LiineageOS changed since last August release (about 49,500 files had to be recompiled).

NOTE: 18.1 continues to be my daily driver. I will likely stop making 17.1 monthly builds in 2022. That is, Dec 5, 2021 security patches will likely be the last 17.1 build.
[Samsung Galaxy Tab A series Questions & Answers] XDA_username00:
Just wanted to take the time and say thanks for working on this project and giving life to my old device.

Installed the Sep version using TWRP in the recovery partition (only) and using the Aurora Store (didn't even know about that option until I read your thread for v18) for the Play Store apps.

The system is much more responsive now than when I first installed the v17 Aug image with the micro version of opengapps and that was an upgrade from LineageOS v16.

I'll probably upgrade to v18 after a while, but anyone with the T550 should be very happy with your work.

Cheers!
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
@XDA_username00, Aurora Store uses less resources compared to any gapps.

Always use the smallest gapps which is pico. Micro is 3rd smallest, nano is second.

Thanks for creating an userid to express your gratitude. It's appreciated and it's a life lesson that will help you interact with others with positive results for everyone involved.
[Samsung Galaxy Tab A series Questions & Answers] XDA_username00:
I realized that soon after.

With v16, I used mindthegapps and didn't have any real perf issues and it was similar to how it was on original stock ROM. The strange thing is that with v16, I used the arm64 version and with v17, I had to use the 32bit version of opengapps so I thought maybe something else was amiss. Since it was my first upgrade with this new version, I ignored the perf issues until I was able to carve some time out to fix it. When that finally rolled around, I would up going with the newer v17 and Aurora Store. Much better on all fronts.

Trying to figure this out from scratch isn't the easiest on these older devices when the source material disappears - and the googles doesn't always lead you here right off the bat.

Keep up the great work!
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20211010-UNOFFICIAL-gt510wifi.zip

Oct 10, 2021 release notes

1. Oct 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/317410

2. Whatever LiineageOS changed since last Sept release (about 4,400 files had to be recompiled).

NOTE: 18.1 continues to be my daily driver. I will likely stop making 17.1 monthly builds in 2022. That is, Dec 5, 2021 security patches will likely be the last 17.1 build.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
New build called lineage-17.1-20211108-UNOFFICIAL-gt510wifi.zip

Nov 8, 2021 release notes

1. Nov 5 security patches as per https://review.lineageos.org/c/LineageOS/android_build/+/318647

2. Whatever LiineageOS changed since last October release (about 5,100 files had to be recompiled).

NOTE: 18.1 continues to be my daily driver. I will likely stop making 17.1 monthly builds in 2022. That is, Dec 5, 2021 security patches will likely be the last 17.1 build.
[Samsung Galaxy Tab A series Questions & Answers] VLHorsorEM:
Looking forward to flashing the latest 17.1 build, which is likely imminent. I am planning to keep it running for some time. Thanks for your efforts, retiredtab.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
I found a problem with the 17.1 Dec 5th build on both SM-T560NU and SM-T350. Both these 2 tablets share the same common base code as the SM-T550 and SM-P550.

If I can't fix the 17.1 Dec 5th build easily, the 17.1 Nov 5th build will be the last one. The 18.1 Dec 5th patches work fine for the exact same devices so it's not a hardware problem.

As I mentioned many months ago, I will be discontinuing the 17.1 builds in 2021 as 18.1 is my daily driver since March 2021.

All the 17.1 functionality works, but for some reason, on the subsequent reboot, it goes to a black screen. I have been able to replicate this consistently now. I test ALL my builds for functionality, but not subsequent reboots as I have never had this issue before. It will now be added to future tests.

@VLHorsorEM, 18.1 for the T550 has been available for a while now at

https://xdaforums.com/t/unofficial-...for-galaxy-tab-a-sm-t550-dec-11-2021.4305889/
[Samsung Galaxy Tab A series Questions & Answers] VLHorsorEM:
@retiredtab, Thank you for all your time and efforts in relation to these >5 years old devices. You should be awarded an eco-star for the avoidance of electrical waste.

I have not yet upgraded to 18.1 for convenience. The Nov 5th build will be also fine for quite some time. Do you have any plans for 19? I may then directly switch from 17.1 to 19, otherwise I will jump to 18.1 at a later point.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Yes, I like to squeeze the performance out of older hardware devices until it's really too slow for basic things. Much like squeezing every ounce of toothpaste or using both sides of a sheet of paper until it's full.

This family of 2015/2016 devices also have fairly easily removeable batteries and replacements can be found for fairly cheap. Newer devices have locked bootloaders and/or hard/impossible to remove batteries which involve removing the screen using a heatgun.

The real limitation of these devices is the non upgradable 1.5GB DRAM. Each LineageOS/Android release uses more and more resources. The OS needs to go on a major diet.

It's up to you when/if you upgrade. My plan is to build 18.1 monthly security patches for all my devices for all of 2022 and start work on 19.0 in 2022.

Right now, I have a couple of devices running 19.0 that were not built by me and I can honestly say they are not daily driver material even for my simple needs. There's things missing from LineageOS that the developers are still working on.

If/when I get 19.0 running, I usually use it myself for about 3 months + handful of advanced and willing testers before announcing it to the public. Right now, I can't even guess as to when in 2022.
[Samsung Galaxy Tab A series Questions & Answers] retiredtab:
Okay, I found that Dec 5th patch is causing the problem, but will have to wait for the LineageOS devs to solve it. It's beyond my knowledge level. This is the patch

https://review.lineageos.org/c/LineageOS/android_frameworks_base/+/320289