[ROM][UNOFFICIAL][10] LineageOS 17.1 [T710][T715][T715Y][T810][T815][T815Y]

Search This thread

lpedia

Senior Member
Sep 18, 2020
125
61
Is it just me - or is the last 810 release from april more instable with

* its wifi connection (dropping every hour or more and only to be reactivate by turnig wifi off and on again)
* random (reboots ?) while sleeping ..and ending up in boot animation ... to then be hard rebootet by hardbuttons only

Did not test it yet, but does a flash-over with an older image work (don't want to loose new apps and settings and since titanium root backup got worse ...) maybe a flash back works ?

If any one else have ideas for the probs above appreciate hints.

Thanks
You could try Migrate to back up your current config. See [APP][ROOT][5.0+][1st Nov 2020] Migrate - custom ROM migration tool.

I don't know if a 'flash back' to an earlier build will work, but if it doesn't, at least you should be able to clean-flash and then restore with Migrate.

I have a T710 and haven't had any extra problems with the latest build. It seems much the same as the previous one, with one exception: fingerprint unlock is actually working now. It hadn't worked on my device with any of the previous LOS 17.1 builds.
 
  • Like
Reactions: CuckooPenguin

CuckooPenguin

Senior Member
Dec 28, 2015
82
32
You could try Migrate to back up your current config. See [APP][ROOT][5.0+][1st Nov 2020] Migrate - custom ROM migration tool.

I don't know if a 'flash back' to an earlier build will work, but if it doesn't, at least you should be able to clean-flash and then restore with Migrate.

I have a T710 and haven't had any extra problems with the latest build. It seems much the same as the previous one, with one exception: fingerprint unlock is actually working now. It hadn't worked on my device with any of the previous LOS 17.1 builds.

Thanks ! Did not know migrate yet and was looking for a decent replacement of titanium root. Will give that a try for sure hope another clean flash will fix the/my wifi issue.
 

skas_2002

Senior Member
Dec 20, 2005
72
14
Very nice ROM. T815 doesn't feel like a 7 year old tablet. The only issue that really bugs me - random reboots when screen is off. When I decide to use it battery is drained every time I forget to turn it off. Installed April 15 version, hopefully the problem will go away. Or maybe there is some registry tweak that may help me?
 

lpedia

Senior Member
Sep 18, 2020
125
61
The "random reboots" usually aren't actually a reboot - it's dropping into an infinite loop of the bootanimation logo, without rebooting first. This will of course drain the battery after a while. It doesn't just happen while the screen's off, either. I've seen it a number of times lately while actually using my T710.

Unfortunately, it's a known problem, still present in the latest build, and no-one has reported a diagnosis or solution. My only workaround is to turn the device off when not using it.

The other main defect is wifi not connecting automatically although configured to do so. Toggling wifi or off/on or airplane mode on/off usually forces the connection, and on my device it usually stays up then. Some OPs have reported wifi being more unstable than that. As above, no diagnosis or solution reported so far.

Another defect - a lot less common than the above two, at least on my device - is a sudden real reboot, which can be to system or to recovery. So you might find it in TWRP for no reason if you've left it on.

On the whole I still find the device quite usable, but I'm not depending on it as a daily drive. For me's it's mainly an e-reader, and it makes a very good one.
 

crcowan

Member
Aug 10, 2012
36
19
The "random reboots" usually aren't actually a reboot - it's dropping into an infinite loop of the bootanimation logo, without rebooting first. This will of course drain the battery after a while. It doesn't just happen while the screen's off, either. I've seen it a number of times lately while actually using my T710.

Unfortunately, it's a known problem, still present in the latest build, and no-one has reported a diagnosis or solution. My only workaround is to turn the device off when not using it.

The other main defect is wifi not connecting automatically although configured to do so. Toggling wifi or off/on or airplane mode on/off usually forces the connection, and on my device it usually stays up then. Some OPs have reported wifi being more unstable than that. As above, no diagnosis or solution reported so far.

Another defect - a lot less common than the above two, at least on my device - is a sudden real reboot, which can be to system or to recovery. So you might find it in TWRP for no reason if you've left it on.

On the whole I still find the device quite usable, but I'm not depending on it as a daily drive. For me's it's mainly an e-reader, and it makes a very good one.
I have a very similar experience.
 

CuckooPenguin

Senior Member
Dec 28, 2015
82
32
[...] infinite loop of the bootanimation logo, without rebooting first. This will of

[...] The other main defect is wifi not connecting automatically

[..] a sudden real reboot, which can be to system

On the whole I still find the device quite usable, [..]

What he said :D

Did a clean fresh install - using Migrate to restore apps (thanks for the tipp)
sadly the wifi thing is bugging me still.

@ripee If you would need any logs or have some hints what we can check to help keeping this great rom alive - let me know. So far the logs don't tell me much.

Besides that - big thanks - for keeping our Tab alive and kicking .. not only as e-book-reader ;D
 

lpedia

Senior Member
Sep 18, 2020
125
61
@lpedia @CuckooPenguin
dunno if you've tried already but on my T810 I'm having Havoc3. 12 and no! problems.
Neither reboots nor WiFi issues.
Of course it's a bit older (February).
Thanks, @bmwdroid - every so often I look at comparisons of LOS, Havoc, CRDroid, etc and usually don't see any particular reason to go for one of the others.

However, a more stable ROM for the T710 might just be that reason ;) ... so I think I will give it a try some time soon. It'd be nice if Havoc was getting regular monthly patch updates, though.
 
  • Like
Reactions: JoshReuben
Thanks, @bmwdroid - every so often I look at comparisons of LOS, Havoc, CRDroid, etc and usually don't see any particular reason to go for one of the others.... ..
Recently I learned (from the Telegram group where the dev ripee is a part from) that AOSP is the base for LOS and Havoc.
While crdroid and Resurrection Remix are just forks of LOS with differenting added features.
In that respect LOS and Havoc might well differ in their behaviour.
 
  • Like
Reactions: lpedia

lpedia

Senior Member
Sep 18, 2020
125
61
Recently I learned (from the Telegram group where the dev ripee is a part from) that AOSP is the base for LOS and Havoc.
While crdroid and Resurrection Remix are just forks of LOS with differenting added features.
In that respect LOS and Havoc might well differ in their behaviour.
They might well do so, indeed. Another reason for me to give Havoc a try. (y)
 

lpedia

Senior Member
Sep 18, 2020
125
61
They might well do so, indeed. Another reason for me to give Havoc a try. (y)
@bmwdroid, I hate to report that Havoc isn't trouble-free either, at least on my T710.

I installed Havoc 3.12 (20210221) yesterday, and all seemed well at first. Wifi still needed occasional help to connect (toggle off/on), but seemed stable once connected. Battery performance seems similar to LOS, ie very good.

I left it on overnight as a test, and at first this morning I thought it had survived the night. But it dropped into a bootanimation loop as soon as I unlocked it :( (that's when LOS often does it on this device, too). Not a reboot - no Samsung boot splash.

Another behaviour similar to LOS: fingerprint unlock is unpredictable. Only works sometimes.

When rebooted after the loop, the device had airplane mode on, but I hadn't set that mode, and it hadn't come on of its own accord after any of yesterday's reboots. I haven't seen LOS do that.

Anyway - I'll go back to LOS, as Havoc doesn't seem an improvement in any other way, and LOS has at least been getting the monthly patch updates.
 
@bmwdroid, I hate to report that Havoc isn't trouble-free either, at least on my T710.

I installed Havoc 3.12 (20210221) yesterday, and all seemed well at first. Wifi still needed occasional help to connect (toggle off/on), but seemed stable once connected. Battery performance seems similar to LOS, ie very good.

I left it on overnight as a test, and at first this morning I thought it had survived the night. But it dropped into a bootanimation loop as soon as I unlocked it :( (that's when LOS often does it on this device, too). Not a reboot - no Samsung boot splash.

Another behaviour similar to LOS: fingerprint unlock is unpredictable. Only works sometimes.

When rebooted after the loop, the device had airplane mode on, but I hadn't set that mode, and it hadn't come on of its own accord after any of yesterday's reboots. I haven't seen LOS do that.

Anyway - I'll go back to LOS, as Havoc doesn't seem an improvement in any other way, and LOS has at least been getting the monthly patch updates.
Sorry to hear that.
On my T810 I'm having none of these issues.
I turn WiFi off and it lasts a week and more with intermediate usage during which it immediately connects to WiFi when turned on.
Fingerprint btw I don't use.
 

lpedia

Senior Member
Sep 18, 2020
125
61
Sorry to hear that.
On my T810 I'm having none of these issues.
I turn WiFi off and it lasts a week and more with intermediate usage during which it immediately connects to WiFi when turned on.
Fingerprint btw I don't use.
I had hoped that since the T710 and T810 have almost identical hardware apart from screen size, my device would behave with Havoc, too :( - but am not too surprised that it didn't.
 

Max_C

Member
Jun 19, 2011
7
1
The "random reboots" usually aren't actually a reboot - it's dropping into an infinite loop of the bootanimation logo, without rebooting first.
This problem only for last LOS? I have the same problem - infinite loop after some time and battery drain. Which OS does not have this bug?
 

lpedia

Senior Member
Sep 18, 2020
125
61
This problem only for last LOS? I have the same problem - infinite loop after some time and battery drain. Which OS does not have this bug?
This series of LOS 17.1 builds have had this problem all along. It has become a little less frequent with the later builds, but hasn't gone away. I tried Havoc 3.12 (= Android 10 based, like LOS 17.1) on my T710 and after half a day saw it do the infinite bootanimation loop, but @bmwdroid has a T810 with Havoc 3.12 that hasn't had any problems. You should try it - you might be lucky too.
[Edit: add link to Havoc thread] [ROM][UNOFFICIAL][10] Havoc-OS 3.x [T710][T715][T715Y][T810][T815][T815Y]
 
  • Like
Reactions: Max_C

XDroidA

Member
Dec 9, 2019
25
20
SM-T815 and flashed latest lineage-17.1-20210509-UNOFFICIAL-gts210ltexx.zip
Shows error starting:
Decryption unsuccessful
The password you entered is correct, but unfortunately your data is corrupt.

Flashed back lineage-17.1-20210415-UNOFFICIAL-gts210ltexx.zip and tablet working again.
What's wrong with the latest build? Anyone having the same problem?
 

MrBlubke

Senior Member
Jan 24, 2011
838
82
SM-T815 and flashed latest lineage-17.1-20210509-UNOFFICIAL-gts210ltexx.zip
Shows error starting:
Decryption unsuccessful
The password you entered is correct, but unfortunately your data is corrupt.

Flashed back lineage-17.1-20210415-UNOFFICIAL-gts210ltexx.zip and tablet working again.
What's wrong with the latest build? Anyone having the same problem?
SM-T810 here and no issues installing latest build, not sure if anything is fixed yet though...
are you certain it was uploaded completely when you downloaded it? maybe it was still being upped? so you didn't get the complete build? I don't know, just guessing since it's pretty recent...
have you tried downloading the build again?
 

XDroidA

Member
Dec 9, 2019
25
20
SM-T810 here and no issues installing latest build, not sure if anything is fixed yet though...
are you certain it was uploaded completely when you downloaded it? maybe it was still being upped? so you didn't get the complete build? I don't know, just guessing since it's pretty recent...
have you tried downloading the build again?
I re-downloaded the file and it's identical to what I flashed.
lineage-17.1-20210509-UNOFFICIAL-gts210ltexx.zip SHA256: E0B36F5206915E314D93F94966DB10749B757BAB391F35E4F58345D98D360FB2

"Decryption unsuccessful" refers tablet's encrypted /data partition. Latest build cannot open and decrypt it for some reason. Previous build can open and decrypt it successfully.
 

Surfer_II

Member
Jul 6, 2019
11
3
I re-downloaded the file and it's identical to what I flashed.
lineage-17.1-20210509-UNOFFICIAL-gts210ltexx.zip SHA256: E0B36F5206915E314D93F94966DB10749B757BAB391F35E4F58345D98D360FB2

"Decryption unsuccessful" refers tablet's encrypted /data partition. Latest build cannot open and decrypt it for some reason. Previous build can open and decrypt it successfully.
Have flashed lineage-17.1-20210509-UNOFFICIAL-gts210ltexx.zip on T815 successfully without any issue.
Please double-check if you have installed latest TWRP version twrp-3.5.2_9-0-gts210ltexx.img and maybe the actual Magisk 22.1 (in case you use this root tool) as well.
This combination seems to work, at least on my tablet.
 

Top Liked Posts

  • There are no posts matching your filters.
  • 4
    Odin was mentioned as thought this process would be similar. Instructions initially don't mention twrp.. havent used that.
    It currently looks like 1st pic.
    Does installing twrp change it to 2nd pic or give a new recovery screen option?
    @bmwdroid's second image is TWRP. You still have the stock recovery.

    Odin can only flash ROMS that are stock Samsung - so to flash LineageOS you'll need a custom recovery, and TWRP is by far the best-known.

    Odin can flash custom recoveries such as TWRP, however. Also, once you have TWRP, you can use TWRP to upgrade or downgrade itself - you only need Odin for the first TWRP install.

    The official download site for TWRP for the T810 is https://dl.twrp.me/gts210wifi/. Start with the latest version, 3.5.2_9-0, and if that doesn't work properly for you, try earlier versions. For this flashing, will need the .img.tar file, not the .img. [To update TWRP with TWRP itself, you use the .img file.]

    This site https://www.getdroidtips.com/flash-twrp-recovery-samsung-phone/ describes the full process, but note that the Galaxy Tab S2 devices don't have an option to unlock the bootloader. That step isn't needed, but you do need to enable Developer mode and turn on OEM Unlocking [if that option is present; if it isn't, it isn't needed] and USB debugging as described in the Unlock Bootloader section. Also note that you MUST turn off "Auto reboot" in Odin before you try to flash TWRP, and you MUST immediately reboot to recovery mode after flashing TWRP, using the buttons as described. The instructions make this sound optional, but it isn't. If you do not force the device to reboot to recovery once, immediately after flashing TWRP, the device will automatically overwrite the custom recovery with Samsung's stock one. After TWRP has been booted once, it'll stay put.

    Hope that helps.
    2
    do y'all have links to gts210wifi los16 builds? dunno where to find them. does anyone build them with new security patches?
    Since ripee removed the los16 builds from his Google Drive and stopped providing los16 builds nobody has stepped up to continue that version, unfortunately. If there is a slight chance to get los17.1 to the same maturity as los16 I totally understand the decision to focus on the newer version. As always, developers are rare and have a "real" life, so we need to be patient or look for a more frequent updated alternate device/ROM. I am very grateful for the work ripee and ananjaser have done, it has greatly extended the lifetime of our S2 tablets!
    1
    Thank you for a wonderful ROM, @ripee! My yesterday-acquired T710 runs smooth as butter on LOS 17.1.

    Some notes for others:
    * Don't look too hard for the OEM Unlock in the Developer Options, it may not be there and then you can just ignore it.
    * Have an SD card with the desired ROM and GApps and some space for your backup available: You may not have USB connection in TWRP and this way you don't need it.
    * If you keep losing USB connection every few seconds, switch to a different USB port on your PC.
    * If Google asks you to register you fingerprints for a second time during setup, just skip it: It did register the first set.
    * Yeah, the shutter button of the default camera falls off the bottom: Use a third party camera, Proshot seems to work fine here.

    A small question: I suppose I cannot count on the updater reminding me to update, right? I'll just have to manually (dirty?) flash the new security updates through TWRP every month?
  • 79
    android-nowe-logo-1.png


    LineageOS is a free, community built, aftermarket firmware distribution of Android, which is designed to increase performance and reliability over stock Android for your device. All the source code for LineageOS is available in the LineageOS Github repo. If you would like to contribute to LineageOS, please visit our Gerrit Code Review.

    Code:
    * [B][U]Your warranty is now void.[/U][/B]
    I am not responsible for bricked devices, dead SD cards,
    * thermonuclear war, or your getting fired because the alarm app failed. Please
    * do some research if you have any concerns about features included in this ROM
    * before flashing it! YOU are choosing to make these modifications, and if
    * you point the finger at us for messing up your device, I will laugh at you.


    FREQUENTLY ASKED QUESTIONS

    (Please read them BEFORE posting anything in the thread!)
    Q: Whenever I try flashing any lineage-17.1 build, I get the following error in TWRP: Updater process ended with ERROR: 7
    A: This error appears whenever you try to flash an Q-based rom within a version of TWRP older than 3.4. Simply flash the linked below version 3.4 or higher, reboot back into recovery, and flash the rom zip again.

    Q: Will any of the variants ever receive official builds from LineageOS?
    A: In short, no. The reason is that, in order to get a modern version of Android working properly on an ageing device some legacy commits needed to have been re-introduced into the current source branch. These include a fix for something as fundamental as Wi-Fi.

    Q: How often will new builds be released?
    A: At least once per month: as soon as possible after each new Android security patch level is merged and whenever a new feature is added or a bug is fixed.


    ROMs
    - SM-T710: gts28wifi

    - SM-T715/Y: gts28ltexx

    - SM-T810: gts210wifi

    - SM-T815/Y: gts210ltexx

    Open GApps

    Magisk




    If your currently installed ROM is any version of either: stock Samsung TouchWiz, LineageOS, CyanogenMod, or any other custom ROM, you must perform a clean install of that LineageOS 17.1 variant, which corresponds to the model of your tablet!





    How to flash LineageOS and Open GApps
    FULL WIPE (with external microsd card)
    1. Move any files you want to keep to your External MicroSD Card – ! Or you will lose them !
    2. Download your LineageOS Rom and GApps Package,
    3. Move your LineageOS Rom and GApps Package to the external MicroSD storage,
    4. Boot into Recovery Mode,
    5. Wipe > Advanced Wipe > Select On (enable tick) for Dalvik / Art Cache, System, Data, Internal Storage, Cache,
    6. Swipe to Wipe at Bottom of Screen,
    7. Back to Main start screen,
    8. Wipe > Format Data,
    9. Type 'Yes' and press blue checkmark at the bottom-right corner,
    10. Go Back to Main Start Screen to Install Rom and GApps,
    11. After you have finished installing the Rom and GApps > Wipe Cache/Dalvik > Swipe to Wipe,
    12. Reboot System! Enjoy!


    FULL WIPE (without external microsd card with NO Home PC access)
    1. Move any files you want to keep to a safe folder - ! Or you will lose them !
    2. Download your LineageOS Rom and GApps Package,
    3. Move your LineageOS Rom and GApps Package to the internal storage,
    4. Boot into Recovery Mode,
    5. Wipe > Advanced Wipe > Select On (enable tick) for Dalvik / Art Cache, System, Data, Cache,
    6. Swipe to Wipe at Bottom of Screen,
    7. Back to Main start screen,
    8. Wipe > Format Data,
    9. Type 'Yes' and press blue checkmark at the bottom-right corner
    10. Go Back to Main Start Screen to Install Rom and GApps,
    11. After you have finished installing the Rom and GApps > Wipe Cache/Dalvik > Swipe to Wipe,
    12. Reboot System! Enjoy!


    FULL WIPE (without external microsd card with Home PC access)
    1. Move any files you want to keep to your Home PC - ! Or you will lose them !
    2. Download your LineageOS Rom and GApps Package,
    3. Move your LineageOS Rom and GApps Package to the internal storage,
    4. Boot into Recovery Mode,
    5. Wipe > Advanced Wipe > Select On (enable tick) for Dalvik / Art Cache, System, Data, Cache,
    6. Swipe to Wipe at Bottom of Screen,
    7. Back to Main start screen,
    8. Wipe > Format Data,
    9. Type 'Yes' and press blue checkmark at the bottom-right corner,
    10. Go Back to Main Start Screen to Install Rom and GApps,
    11. After you have finished installing the Rom and GApps > Wipe Cache/Dalvik > Swipe to Wipe,
    12. Reboot System! Enjoy!
    13. Once first boot is completed you can safely move your files back onto your Internal Storage.


    Typically if you do not do a Clean Install then you are not allowed to report errors or problems. If you Dirty Install and you do have problems then you will be asked to Wipe All and Clean Install and see if the problems still exist. This is a DAILY changing rom and any bug that you found was not working on the previous day's build may be fixed with todays daily build. On a side note, the code implemented to fix that bug could potentially break something that worked on that previous build. So reporting problems on a day old build that you dirty flashed over whichever build of whichever rom you had flashed previously will not be accepted as a true error.



    Problems known to happen after a Dirty Installation
    1. A muddled up mess of a system. You are taking a rom and installing a newer rom with changes over the top of your old rom. Between these two periods of time during which you used your tablet and created data, changed system options, and used apps. This is absolutely increasing the risk of causing problems somewhere in the system/data partitions. Some people have luck with Dirty Flashing. However, it's always hit-and-miss because of what we mentioned above about bug fixes breaking previously working functions. Dirty flashing doesn't only create problems if the source code of the system data and the system settings of the new build are significantly different from those of your previous build. That's not to say that Clean Installing won't ever create problems, but only bugs present on a Cleanly Installed rom are relevant for development purposes.

    * Clean Install: Fully wiping everything and installing the rom onto a fully clean system/data partition of the tablet.

    * Dirty Install: Installing the rom and GApps over top of the older rom to save time and not have to reinstall all the user apps and tweaking system and app settings that usually take a lot of time to set up as you like.


    Bugs
    - The microphone is able to record sound, but the sound is very faint. This is due to Samsung's proprietary drivers, as determined by Skulldron.
    - T710 & T715/Y: Camera viewfinder is misaligned with the dimentions of the display, such that the shutter button is almost off the screen
    - You tell us!

    Changelog
    All major features and bug fixes are discussed in detail by the developers in the thread, whenever they are implemented. All builds include the latest upstream Changes for all devices from LineageOS.

    Credits
    - bonuzzz, McFy, Skulldron, RaymanFX, CTXz, T_I, and every other open source developer and tester who contributes directly or indirectly to the LineageOS community in the development of and in providing feedback for the gts28ltexx, gts28wifi, gts210ltexx, and gts210wifi.

    Sources
    - LineageOS
    - universal5433

    XDA:DevDB Information

    LineageOS 17.1, ROM for the Samsung Galaxy Tab S2

    Contributors
    ripee, ananjaser1211
    ROM OS Version: Android 10
    ROM Kernel: Linux 3.10.x

    Version Information
    Status:
    Stable
    Current Stable Version: 10
    Stable Release Date: 2020-12-27

    Created 2018-12-15
    Last Updated 2020-12-29
    21
    Changelog

    Build 0418 for all variants
    * April security patch level.
    * Synced with LineageOS sources.
    21
    Changelog

    Build 0813 for all variants
    * August security patch level.
    * Synced with LineageOS sources.

    Please don't ask about deep sleep.
    20
    Changelog

    Build 1101 for all variants
    * Synced with LineageOS sources.
    19
    Changelog

    Build 0924 for all variants
    * Update to the latest version of the Lineage audio hardware HAL
    * Fix memory issues (with improved LowMemoryKiller and swap)
    * Fix random shutdowns due to low memory after long useage
    * Set the minimum GPU frequency to 160
    * Set the GPU to be always online (due to lack of HWC, this fixes performance issues)
    * Massive improvements to LiveDisplay (ColorProfile, DisplayMode (night/day), Color temperature, Outdoor mode and Color Calibration support)
    * Fix Samsung vnswap
    * Add missing uvented permissions in ramdisk
    * Add custom power.rc
    * Other performance improvements

    The above are courtesy of @ananjaser1211

    * Synced with LineageOS sources.
Our Apps
Get our official app!
The best way to access XDA on your phone
Nav Gestures
Add swipe gestures to any Android
One Handed Mode
Eases uses one hand with your phone