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

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Thanks for the explanation and the link. Unfortunately your link doesn't work - ends with the error: 'Oops! We broke the matrix. Someone call Neo!" Do you have the correct link please?
Probably it was time limited link which expired now. I need to look on my disk , whether still have copy of this file. Do you have any cloud storage I could upload it?
 

metterschling

Senior Member
Sep 29, 2013
163
108
Nexus 7
Samsung Galaxy Tab S2
Thanks for the explanation and the link. Unfortunately your link doesn't work - ends with the error: 'Oops! We broke the matrix. Someone call Neo!" Do you have the correct link pleas

Probably it was time limited link which expired now. I need to look on my disk , whether still have copy of this file. Do you have any cloud storage I could upload it?
The link has expired. I created a new one that is again valid for two weeks and added it to the conversation.
 

ripee

Recognized Developer / Recognized Contributor
Build 20211103 is back up for all 4 variants!

In response to popular demand, I have dug up this build in the archives of the build server I use, and I uploaded all 4 builds earlier today into their respective folders as linked in the OP.

In regard to what bmwdroid has been doing with my builds, I do not support their being posted elsewhere, however I know of course that I have no control over what anyone does with my builds. I can only appreciate the sentiment, but only so far as it does not violate any XDA rules.

As for the newer builds, as they are less stable, I will be removing them at the earliest convenience.
 

jenda_13

New member
Apr 15, 2022
3
0
Build 20211103 is back up for all 4 variants!

In response to popular demand, I have dug up this build in the archives of the build server I use, and I uploaded all 4 builds earlier today into their respective folders as linked in the OP.

In regard to what bmwdroid has been doing with my builds, I do not support their being posted elsewhere, however I know of course that I have no control over what anyone does with my builds. I can only appreciate the sentiment, but only so far as it does not violate any XDA rules.

As for the newer builds, as they are less stable, I will be removing them at the earliest convenience.
Thanks, but it looks like build 20211103 for gts28ltexx has the same problem as the newer builds i.e. non-functioning mobile internet.

Anyway thanks for your time.
 

shalannn

Member
Apr 7, 2020
32
0
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

what about sm-t819 ???
 
Thanks for supplyting the older build @ripee.

Will you be doing any more up to date builds with the S2 WiFi blobs back in place?

Are there any instructions for building these ROMs myself ? I have a 715Y and would like to see if I can get the LTE unit working. I also like to set SELinux enforcing by default. I thought I found a post with instructions whilst idly browsing a while back, but now I can't seem to find it.
 
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metterschling

Senior Member
Sep 29, 2013
163
108
Nexus 7
Samsung Galaxy Tab S2
Are there any instructions for building these ROMs myself ? I have a 715Y and would like to see if I can get the LTE unit working. I also like to set SELinux enforcing by default. I thought I found a post with instructions whilst idly browsing a while back, but now I can't seem to find it
Maybe this one: https://wiki.lineageos.org/devices/gts210ltexx/build - for the 10inch one but most likely easy to adopt.
I had similar thoughts this weekend 😉. The great recent work by @retiredtab for the WiFi variants is truely inspiring. Started trying to build using the Container-based build environment.
Separately I patched libsec-ril.so with patchelf 0.9 myself (see attachment) to explore if using that one will fix the LOS18.1 RIL issues. Based on the vendor blobs from here. Unfortunately I did not find the time to test yet...the T715 is my primary device.
 

Attachments

  • libsec-ril.so.zip
    1.1 MB · Views: 15
Last edited:
Maybe this one: https://wiki.lineageos.org/devices/gts210ltexx/build - for the 10inch one but most likely easy to adopt.
I had similar thoughts this weekend 😉. The great recent work by @retiredtab for the WiFi variants is truely inspiring. Started trying to build using the Container-based build environment.
Separately I patched libsec-ril.so with patchelf 0.9 myself (see attachment) to explore if using that one will fix the LOS18.1 RIL issues. Based on the vendor blobs from here. Unfortunately I did not find the time to test yet...the T715 is my primary device.
Assuming that I only needed to replace these two in the system area ...

/system/lib/libsec-ril.so
/system/vendor/lib/libsec-ril.so

... then I see no difference in SIM recognition after an initial re-boot.
After wiping cache and dalvik and re-booting, there was still no change in behaviour.

There are a dozen or so copies of those two under various vendor directories (I feel its strange they are not symlinks. Does android not support symlinks in its filesystem?) and I didn't try to replace all of them.
 
Last edited:

metterschling

Senior Member
Sep 29, 2013
163
108
Nexus 7
Samsung Galaxy Tab S2
Assuming that I only needed to replace these two in the system area ...

/system/lib/libsec-ril.so
/system/vendor/lib/libsec-ril.so

... then I see no difference in SIM recognition after an initial re-boot.
After wiping cache and dalvik and re-booting, there was still no change in behaviour.
You did exactly what I had in mind, thank you for trying. It'd be nice if you could check your logcat if it still contains the libsec-ril.so dlopen errors as observed here or if using patchelf 0.9 as recommended by ananjaser1211 at least fixed that issue.
This commit provides the context, there only the two above locations are used.
There are a dozen or so copies of those two under various vendor directories (I feel its strange they are not symlinks. Does android not support symlinks in its filesystem?) and I didn't try to replace all of them.
If you perform a
Code:
find /system -type l
you'll find a bunch of symlinks on your Android device. I've got no idea why these lib copies aren't symlinked.
 
Last edited:

HellRaiser9101

New member
Dec 6, 2012
4
0
Hello ,

I have a Tab S2 is a SM-T810 WiFi
I have TWRP twrp_3.1.0-1_sm-t810_13317
I cannot get any newer version of TWRP to boot when holding down PWR+VOL UP+HOME buttons , it just stays on the samsung loading screen and if I hold them long enough the screen just turns off
I was running 5.0.2 android version on the device itself (official version)

Please help!
 

lpedia

Senior Member
Sep 18, 2020
260
140
Samsung Galaxy Tab S2
HTC 10
Hello ,

I have a Tab S2 is a SM-T810 WiFi
I have TWRP twrp_3.1.0-1_sm-t810_13317
I cannot get any newer version of TWRP to boot when holding down PWR+VOL UP+HOME buttons , it just stays on the samsung loading screen and if I hold them long enough the screen just turns off
I was running 5.0.2 android version on the device itself (official version)

Please help!
You don't have the correct version of the bootloader on your device, and this could certainly make TWRP unable to boot.

Before you attempt to install a custom ROM, the device must have the latest version of stock Android that the manufacturer provided for that device. This is because installing custom recovery and ROMs doesn't normally replace the bootloader, so the bootloader that's there has to already be compatible with them. If you don't have the right bootloader, TWRP and/or the ROM are certain not to work properly or maybe not work at all.

Each Samsung firmware update for the device updates the bootloader as well as the system, so by installing the latest firmware you will get the right bootloader. You have 5.0.2 (Lollipop), which isn't the latest release for the SM-T810. That was 7.0 (Nougat).

See https://www.sammobile.com/samsung/galaxy-tab-s2/firmware/#SM-T810. You need to install that version on your device.

Once you've done that, install the version of TWRP that @retiredtab recommends in the FAQ in his T810 thread. This is known to work with LineageOS 18.1. As with the bootloader, the version of TWRP you use should be the most recent version known to work with the relevant custom ROM on your device. Older versions might not work with newer ROM versions.
 

HellRaiser9101

New member
Dec 6, 2012
4
0
You don't have the correct version of the bootloader on your device, and this could certainly make TWRP unable to boot.

Before you attempt to install a custom ROM, the device must have the latest version of stock Android that the manufacturer provided for that device. This is because installing custom recovery and ROMs doesn't normally replace the bootloader, so the bootloader that's there has to already be compatible with them. If you don't have the right bootloader, TWRP and/or the ROM are certain not to work properly or maybe not work at all.

Each Samsung firmware update for the device updates the bootloader as well as the system, so by installing the latest firmware you will get the right bootloader. You have 5.0.2 (Lollipop), which isn't the latest release for the SM-T810. That was 7.0 (Nougat).

See https://www.sammobile.com/samsung/galaxy-tab-s2/firmware/#SM-T810. You need to install that version on your device.

Once you've done that, install the version of TWRP that @retiredtab recommends in the FAQ in his T810 thread. This is known to work with LineageOS 18.1. As with the bootloader, the version of TWRP you use should be the most recent version known to work with the relevant custom ROM on your device. Older versions might not work with newer ROM versions.
When I install Gapps (ARM, android 11, nano or stock) lineage does not boot just tries to load for about 5 minutes. Any ideas?
 

lpedia

Senior Member
Sep 18, 2020
260
140
Samsung Galaxy Tab S2
HTC 10
When I install Gapps (ARM, android 11, nano or stock) lineage does not boot just tries to load for about 5 minutes. Any ideas?
Which Gapps package did you try, and what version? If the latest version doesn't work, try the previous version - and so on until you find one that does.

I've successfully used NikGapps and BiTGapps on my T710 at different times, and have not had problems with either. I'm currently using the latest version of NikGapps.
 

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  • 1
    ...
    1. Is there an assumption that I've replaced the recovery image prior to starting this process?
    This is mandatory as no stock recovery will flash a custom ROM.
    2. If the answer to question #1 is "Yes", what recovery should I install, and how do I get it (a URL to a thread for that would be appreciated)?
    3. Where does the "Magisk" application come into this? It is linked, but I didn't see anything in the post that references it.
    Magisk is only necessary if you want to have root (admin) privileges.
    The ROM will work without root.
    4. Is there anything else that I'm missing?
    I would recommend to use the pico version of OpenGapps to easier identify problems with Google stuff when installing the in pico not included apps afterwards from playstore.
    AND i think that the ROM from @retiredtab has much newer patches included.
    1
    ...
    AND i think that the ROM from @retiredtab has much newer patches included.

    @filker0 - looking at post#1 in this current thread, I can see that it was assumed a new user would be coming from a different LineageOS (or other custom Android) and would already have TWRP recovery installed.

    So you will first need to install TWRP. Use the TWRP version that retiredtab recommends in his T710 thread (the link that @bmwdroid has given above). Once you have TWRP installed, the rest of the installation instructions given in this thread should work.

    @bmwdroid - as of late yesterday, the T710 build is up to date with the July 2022 patches. 🙂
  • 88
    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.