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[ROM][S9+/S9][UNOFFICIAL][LineageOS 18.1][Weekly]

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ElPakoTech

Member
Apr 18, 2020
21
30
Hi Neurotical, have you seen the last updated sources from synt4x93 ? I just let you know to be careful if you want to try it, backup everything, I made my own build but it break my encryption when I installed it, I lost all my data.

And from now, it still do not start properly even with a clean cache/data reset. I will reinstall my phone later with my previous version.
 
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Neurotical

Senior Member
Feb 7, 2011
136
161
Can anybody tell me why I'm running the February 5th 2020 security update? Running the latest build, have never seen something like this. Other roms were always up to date. Could it be my Gapps?

That is quite an outdated Security update. Can you verify which version of the ROM you are running? To check this, please navigate:

Settings > About Phone > Android Version

Your screen should look like this below:

Screenshot_20210923-091604_Settings.png
 

murtzsch

Member
May 10, 2014
36
20
Hi Neurotical, have you seen the last updated sources from synt4x93 ? I just let you know to be careful if you want to try it, backup everything, I made my own build but it break my encryption when I installed it, I lost all my data.

And from now, it still do not start properly even with a clean cache/data reset. I will reinstall my phone later with my previous version.
HI
I just encountered this issue, my phone wasn't encrypted.
Hopefully I did not lose my data, just had to flash an old build.
 

EddoWagt

Senior Member
Mar 21, 2016
327
74
Samsung Galaxy S9+

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Neurotical

Senior Member
Feb 7, 2011
136
161
Anyone else having issues with rising temperature? I was watching some series using VLC and after a couple of hours (I usually fall asleep) my phone was really hot.

Could it be a CPU boosting issue?

---

Seems https://github.com/synt4x93 created some new repo's, maybe they are useful @Neurotical?

Hey Francois, ,glad you are enjoying the ROM :)

I will try and watch an HD movie on my S9 to see if I can experience what you are experiencing. For reference though, if you are watching several hours of video playback on VLC on your phone, heating up could be normal for any phone, especially if there is a case over it.

One reputable tool I find quite useful when trying to control for battery life and heat generation is "Root Booster", which can be found in the play store. Give that a try and let us know if it helps you.
 
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Neurotical

Senior Member
Feb 7, 2011
136
161
Running the previous build I guess, which is only 2 weeks old
This is quite intriguing!

The Lineage team are the ones who roll the AOSP updates into the ROM every month and then update the flag for the new version. See this link to the LOS 18.1 code.

Perhaps someone on this thread with an S9+ can confirm the security version they are on by checking Settings > About Phone > Android Version? This would be helpful to determine if it's a tweak needed in the star2lte repo or not.
 

EddoWagt

Senior Member
Mar 21, 2016
327
74
Samsung Galaxy S9+
This is quite intriguing!

The Lineage team are the ones who roll the AOSP updates into the ROM every month and then update the flag for the new version. See this link to the LOS 18.1 code.

Perhaps someone on this thread with an S9+ can confirm the security version they are on by checking Settings > About Phone > Android Version? This would be helpful to determine if it's a tweak needed in the star2lte repo or not.
It is weird isn't it! I can't quite remember for sure, but I think I was on the January 2020 patch before updating to the latest release, so something is working, but incorrectly
 

Isovitisgr

Senior Member
Aug 25, 2011
173
35
Athens
This is quite intriguing!

The Lineage team are the ones who roll the AOSP updates into the ROM every month and then update the flag for the new version. See this link to the LOS 18.1 code.

Perhaps someone on this thread with an S9+ can confirm the security version they are on by checking Settings > About Phone > Android Version? This would be helpful to determine if it's a tweak needed in the star2lte repo or not.

This is from my s9+ running the latest version you have uploaded
Screenshot_20210923-165502_Settings.png
 
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Hi Neurotical,
thank you also from my side for your time and involvent for this ROM.
After several OTA updates I recognized that the build time is every time after a restart/reboot been used and tested with the current release if this changes when I manually set the time via settings. But neither manually changing it nor syncing it via NTP (ru.org.amip.ClockSync) the time is after every reboot on build time. Currently 0:15 UTC+2.
Via # date 16:30 Set it is also on build time after reboot
# date
Fri Sep 17 00:15:35 CEST 2021

Build time Thu Sep 16 18:15:08 EDT 2021

What would be a solution and how can be this debugged more.

Best,
Tobias
Hi @Neurotical
I found some related bug and this was solved.
Might this have to be added for this ROM too?
I am using a SIM card with a PIN and a lock pattern.
TWRP shows the correct time.
Using automatic or manual time does not help.
Best regards,
Tobias
 

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  • 6
    FYI, new build available via OTA and OP includes:

    New kernel 4.9.286
    AOSP October 2021 security update
    Power and charger enhancements
    Full 4G set as default network protocol

    Enjoy!
    3
    FYI:

    New kernel 4.9.284 now available!
    Please update via OTA or download ROM via OP.

    Have a nice day!
    2
    FYI:

    New kernel 4.9.283 now available!
    Please update via OTA or download ROM via OP.
    Have a nice day!

    :):coffee::geek:
    2
    Hi, I have todays release update installed. However, I do not see any wireguard settings or menus. Have I missed something?
    You have to install the Wireguard app. There you will see that the kernel module is installed.
    1
    Sorry for the S9+ novice question.
    Would this rom work on a G965N Exnyos Korean model?
    I only know that this ROM is designed for the S9 Exynos and S9+ Exynos. Snapdragon is not compatible.
  • 14
    2okPze5.png


    ROM DOWNLOADS:

    ROM INSTALL INSTRUCTIONS:
    • From OEM:
      • Lineage Recovery
      • Format /system + /data + /cache
      • Flash
      • Reboot
      • Root is not included. To root, install Magisk yourself.
    • From existing Unofficial weekly:
      • Use OTA, or
      • Sideload via ADB in recovery

    BASEBAND UPDATING:
    1. Install Samsung USB drivers
    2. Install Odin 3.14 (or later)
    3. Download updated baseband firmware from the XDA thread for your model phone.
    4. Unzip and re-pack "modem.bin" into a .tar file such as "modem.tar"
    5. Reboot phone into download mode
    6. Open Odin
    7. Load your modem.tar file into CP in Odin
    8. Start flash
    9. Reboot

    CONTRIBUTORS:

    SOURCE CODE:

    REFERENCES:

    REQUIREMENTS:
    • Stock Samsung Oneui 2 - 2.5 (Android 10) Firmware. (Bootloader + Vendor)

    WORKING:
    • GPS
    • NFC
    • Wi-Fi
    • Audio
    • HDMI
    • Camera
    • Ethernet
    • Bluetooth
    • MTP/ADB
    • Encryption
    • Glove Mode
    • Android Auto
    • OTA Updates
    • Call Recording
    • Mobile Network
    • SELinux Enforcing
    • Fingerprint Sensor
    • Wireguard (via kernel)

    BROKEN:
    • Iris Scanner
    • VoLTE

    XDA DevDB Information
    • LineageOS 18.1, ROM for the Samsung Galaxy S9

    Version Information
    • Status: Stable
    • ROM Firmware Required: Oneui 2 - 2.5

    My work will always be free for everyone to use and I will never hide anything behind a paywall.

    * We are not responsible for anything that may happen to your phone by installing custom ROMs/kernels.
    * You do it at your own risk. You take responsibility upon yourself and are not to blame us or XDA.
    * Your warranty will likely be voided by installing custom ROMs.
    12
    Good day,

    I just want to take a moment to say thank you to everyone who has tried this ROM, given feedback, and even helped out along the way! It is with all of your help that I can keep the builds coming and I look forward to doing this for as long as I can for the S9 and the S9+ :) Our community deserves the best and that only happens when we all work together :)

    Have a great day, and thank you again to everyone in this community :)
    7
    A couple of questions as I am somewhat new:
    1. Why is this build unofficial resp. what is preventing this build to become official again (as starlte official was discontinued after LOS 17.1)?
    2. How trustworthy is an unofficial build compared to an official build?
    With regards to safety and trustworthiness:
    • Everything is open source so anyone can see what is going into the all the builds. This includes the kernel, Lineage OS, and Samsung device trees. These links are in the OP.
    • I don't make any changes of my own because I am not knowledgeable enough to do that, but I do copy kernel patches from the Linux Long-term Maintenance team run by Linus and Greg for the 4.9y branch; I can at least bug-test and roll them into the weekly ROM builds. Linus & Greg pretty much head up Linux entirely, so the patches they approve are as trustworthy as you can get :D
    • I also got the Wireguard kernel patch into this build, which is pretty awesome, but without the help of the contributors in the OP, I really wouldn't have been able to do it on my own.
    With regards to making it official:
    • I was using the official Lineage OS, but when the support for official status was dropped, I started learning how to build Lineage for unsupported devices. Then I came across Synt4x's repos, which gave me all the resources needed to build Lineage 18.1 for the S9 and S9+. I simply maintain kernel patches that come out weekly by the Linux Long-term Maintenance team (Linus & Greg et al.), work with the community here to maintain the device trees, and then compile the builds as often as needed.
    • After I got the hang of all this, I figured everyone who has an S9 or S9+ should be able to benefit form Lineage OS 18.1 support. These phones have great hardware and I think it a shame not to allow users the option to de-google it or take full control of it so soon after it has been released. Besides, the 4.9y kernel is going to be maintained until 2023. So I upgraded from a 3600 to a 5900x and 16gb RAM to 32gb RAM to speed up the builds (each build is only about 8 minutes now) and support the community!
    • I would like to see an official build, but I can't maintain it all by myself. I am not a programmer, and most of the code I look at is jibberish to me; I just trust the Linux team and Lineage OS team. So we need the community here to help me with build errors when the Lineage team makes changes to their OS; I'm not knowledgeable enough yet to tackle those problems on my own. But I am learning, and have successfully tackled two compile errors so far with the help of the community, and I've learned from them :D
    What you will get with this build, even though it is unofficial is:
    • Kernel updates straight from the Linux Long-term Maintenance team; this is very official and safe;
    • AOSP security patches straight from the Lineage group; this is very official and safe;
    • Lineage OS updates as they roll out; this is very official and safe;
    I literally can't do anything else because of my limited skillset.
    7
    FYI:
    • Updated kernel 4.9.277
    • Wireguard kernel access persists through ROM update :)
    • Root with Magisk v23 persists through ROM update :)
    Enjoy!
    6
    FYI, new build available via OTA and OP includes:

    New kernel 4.9.286
    AOSP October 2021 security update
    Power and charger enhancements
    Full 4G set as default network protocol

    Enjoy!