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[ROM][UNOFFICIAL][11] LineageOS 18.1 [T710][T715][T715Y][T810][T815][T815Y]

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Ronald tab s2

New member
Sep 22, 2021
4
0
On T810 yes, ca. 10 sec backlight on every touch of buttons and screen. Same as you reported.
On T815 the backlight is off and also no option in the settings to change that (as far I could see)
Both system have been upgraded dirty? In 17.1 there is an option to disable the backlight, i assume when you upgrade with this option disabled, it is also off in 18.1
 

Surfer_II

Member
Jul 6, 2019
15
3
In addition to the bugs mentioned earlier for 18.1 (20210917) on T815, this build leads to ca. 1,5 - 2% battery consumption per hour in standby and flightmode.
It seems that the tablet does not go to deep sleep if not used for longer time.
Also the charging speed is very slow. It takes some hours to fully charge the tablet.
@Sappron: Did you observe this as well?
 

johnbelloh

Senior Member
Jan 3, 2013
189
45
Dayton
There are a ton of gts210vewifi in service as well as the 8 inch model. When are you going to add these. I don't see any other source for lineage 18. If I missed one please direct me to one. They are arm 64 based and have plenty of life left in them.
 

Ronald tab s2

New member
Sep 22, 2021
4
0
In addition to the bugs mentioned earlier for 18.1 (20210917) on T815, this build leads to ca. 1,5 - 2% battery consumption per hour in standby and flightmode.
It seems that the tablet does not go to deep sleep if not used for longer time.
Also the charging speed is very slow. It takes some hours to fully charge the tablet.
@Sappron: Did you observe this as well?
I have the T810, i observed the same
 

Sappron

Member
Sep 23, 2021
15
1
Samsung Galaxy Tab S2
Hey @Surfer_II I Don't know cause my tablets battery is just old and dosent work without charging at all so i dont have that issue. Also there is a huge difference between exynos and sd models of the tablet and i have exynos one if u have sd urs must perform better than mine in any situation cause this exynos chip sucks
 

Sappron

Member
Sep 23, 2021
15
1
Samsung Galaxy Tab S2
Also i got stuck in a problem any ideas how to install happs on the latest version i tried to install through lineage recovery and it didnt work then i tried twrp it caused bootloop and now im again stuck at the lineage recovery can i get some help @ripee
 

greenleaves

Senior Member
Dec 15, 2010
185
21
Philadelphia
Did a latest 0930 flash over 0917 build on T810. Everything seems working smoothly except the loss of SD card problem still persists in the 0930 build. More testing is coming. Thanks as usual.
 
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benwatkins

Member
Sep 24, 2020
6
0
- Mobile data / SIM card is not working yet in this build (18.1_20210917).

Since mobile data are a "must" for me, I tried to return to the latest 17.1 build by dirty flash.
- Reboot System after dirty flash of 17.1 over 18.1 build failed unfortunately. After a long booting period the device booted in TWRP recovery. Tried to reboot again after another Wipe Cache & Dalvik with the same outcome: Boot ended in TWRP recovery.
- To avoid full wipe / clean flash of 17.1, have now flashed again the 18.1 build + Open GAPPS 11 Pico + Magisk 23 and have to live without mobile data for the time being.
Learning: Dirty Flash from 17.1 to 18.1 works fine but not in the other direction.
=> In case you will need mobile data on T815 working, stay on 17.1 until this is fixed in future 18.1 builds.
@ripee: Could the mobile data bug and the other mentioned bugs be fixed?
Just for the sake of anyone wondering, mobile data still not working on 18.1 20210930 (tested on a T715 clean install). It prompts you during setup to install a SIM card even when one is already inserted.

Also GPS not working. Sensor shows up as present but no satellite signals received.
 

haircut313

Member
Jun 19, 2013
14
0
Device powers on when plugged in to power source. even turning it off while plugged in it just turns on automatically which is annoying other than that no problems so far
 

djcasl

Senior Member
Oct 3, 2011
71
10
Installed 0930 over 0917 on the 710, I don't have an SD card problem. Never had that with any build. Only still the auto power on when charging. Apart from that this build is really good and stable. I have no reboots and WiFi works great now with MESH WiFi access points.
 
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  • 2
    On the latest build on 710 the WiFi just quits. had go to back to the last build
    I know, I was working to optimize the blobs by picking our commits from 15.1 onward into separate branches, so as not to have to download gigs and gigs of blob commits for other devices when building. I had some trouble figuring out what we need and what we don't. The latest build 1119 should be as good as previous builds, I have deleted the previous unstable builds.
    1
    @ytccts I just installed the latest build 1103 and used 1112-nano gapps. No battery drain. Played games untill 76% battery. Put it in the charger, said it would be full in about 40 minutes which was pretty accurate. Please note I keep BT and Location/GPS off untill I need it for something. But image works fine for me I have the SM-T710 as well.
    1
    The latest build 1119 should be as good as previous builds, I have deleted the previous unstable builds.
    Also with the 20/11 build on my SM-T715 the WI-Fi problem isn't resolved and remains "not working". Also "back" and "multiwindows" buttons are still not working...
  • 84
    image17.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-18.1 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 3.5. Simply flash the linked below version 3.5 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 18.1 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 18.1, ROM for the Samsung Galaxy Tab S2

    Contributors
    ripee, ananjaser1211
    ROM OS Version: Android 11
    ROM Kernel: Linux 3.10.x

    Version Information
    Status:
    Stable
    Current Stable Version: 11
    Stable Release Date: 2021-09-17

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

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

    Please don't ask about deep sleep.
    21
    Changelog

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