[ROM][R][bacon] Unofficial, optimized LineageOS 18.1 - May 6th

[Tomoms]

In this thread I'll share with you my personal builds of LineageOS 18.1 for the Oneplus One codename: bacon (older builds of 17.1, 16 and 15.1 are still downloadable). This project is inspired by idprophecy's LineageOS builds, to which I want to add my favorite features and, possibly, even more optimizations and improvements.

MAIN FEATURES
LineageOS 18.1 features:

• support for MicroG (signature spoofing) - read the 2nd post!
• improved & updated libraries: sqlite, zlib, libpng, jemalloc, libvpx, libyuv
• critical system components built with -O3 optimizations (art, SurfaceFlinger, bionic)
• built with the latest Clang 12.0.x
• optimized & updated bionic routines
• Android RunTime (ART) updates and improvements
• several debugging & tracing components are removed from the system
• reduced priority of the USB connection type & USB debugging notifications
• partial/full screenshot QS tile
• Ambient display gestures
• in-built F-Droid Privileged Extension
• support for OTA updates
• several minor tweaks and improvements
• my custom kernel (features listed below)

Spoiler: Old info about 17.1

LineageOS 17.1 features - development stopped:

• all C/C++ components are build with -O3/-g0 flags (maximum optimization, minimum useless debug info)
• support for signature spoofing (= MicroG supported) - read the 2nd post!
• in-built F-Droid Privileged Extension
• native support for WakeBlock by @GioBozza, for more info: WakeBlock on XDA
• several updates & improvements to internal components: skia & libjpeg-turbo (temporarily reverted), art, bionic, libpng, sqlite, zlib
• several debugging & tracing instructions are removed from the system
• custom Screenshot QS tile
• deGoogling tweaks: non-Google captive portal server & SUPL server
• support for OTA updates
• minor miscellaneous tweaks
• my custom kernel (features listed below)

Kernel features:

• built with GCC 11
• CPU underclocking (268 MHz) & max freq. limited to 1,9 GHz by default
• several f2fs updates
• power-efficient workqueues
• cpu_input_boost by Sultanxda
• bricked hotplug replaces mpdecision
• CPU undervolting
• maple I/O scheduler
• userspace LMKD replaces the old in-kernel Low Memory Killer driver
• DDR bandwidth boost on screen wake
• minor adjustments and tweaks
• several code updates and security/bug fixes

BUGS
Also present in official LineageOS 18.1/17.1:

• kernel panic when changing USB mode to "File transfer" - fixed in the 20200811 build & later official nightlies
• notification/charging LED not working - fixed in the 20200811 build & later official nightlies
• low in-call microphone if speakerphone is enabled - fixed in the 20200811 build
• charging hiccups when using certain 3rd-party chargers/cables - fixed in the 20200912 build
• AUX audio output not working - fixed in all builds (unofficial & official) newer than 20200826
• wrong time on boot until connected to a network - fixed in the 20201110 build, and in official nightlies starting from 20201224
• the Music app is quite messed up (bug is already reported on Gitlab) - fixed by the LineageOS team as of January 2021.
• flaky GPS - fixed (or at least improved) in the 20201213 build & official 18.1 nightlies newer than 20210415
• manual mobile network scan not working - fixed in the 17.1 20210123 build, also fixed on official LineageOS
• NFC not working - fixed in the 20210419 build & later official nightlies
• 5 GHz hotspot is broken - but there's a workaround here
• front camera often affected by overexposure - workaround: restart the app you're using until it's gone
• stuttery playback of HD videos in some 3rd-party apps - fixed in the 20211106 build
• weird noises while playing flac files if AudioFX's Bass option is enabled (17.1)

Bugs that are specific to my builds:

• encryption of f2fs-formatted /data partition is broken - fixed in the 20201028 build
• corrupted thumbnails and weird visual artifacts in the system's color picker - fixed in the 20201028 build
• libjpeg crashes in certain apps (NewPipe, Files, and others) - fixed in the 20201017 build
• Telegram's (and, possibly, other apps') in-built camera not working - apparently fixed in the 20200811 build
• WiFi issues affecting a minority of users - under investigation
• encryption doesn't work - fixed in the 2022-01-13 build
• some apps crashing due to permission quirks - fixed partially in the 2022-02-13 build, completely fixed in 2022-03-02

Changelog for LineageOS 18.1:
May 6th:

• synced with LineageOS
• May's security patches
• updated SQLite library

Changelog for older LineageOS 18.1 builds:

Spoiler: Changelogs for previous 18.1 builds

April 6th:

• synced with LineageOS
• April's security patches
• link-time optimization applied to some critical system components
• minor updates and tweaks to the core OS

March 10th:

• synced with LineageOS
• March's security patches
• removed rx_wakelock from the WiFi chip's driver (could lead to small power savings without affecting functionality)

March 2nd:

• ro.debuggable=0 by default (fixes root detectors reporting system as rooted when it is not)
• fix for a permission bug that made apps misbehave when trying to access the phone's sensors
• wallpaper zooming has been disabled
• synced with LineageOS

February 13th:

• synced with LineageOS
• fix for apps crashing on startup due to mishandling of the INTERNET permission
• a few kernel updates & fixes for an infrequent kernel panic

January 13th:

• /data partition encryption is fixed

January 11th:

• synced with LineageOS
• January's security patches
• kernel: debloated WiFi driver

December 12th:​

• synced with LineageOS + December's security patches
• general user interface improvements
• build using the latest Clang 12.0.x compiler
• minor fixes and updates here and there

November 6th:​

• synced with LineageOS
• November's security patches
• fix for laggy playback of HD videos in 3rd-party apps

October 8th:​

• synced with LineageOS + October's security patches

September 10th:​

• screenshot QS tile now fixed

September 9th:​

• synced with LineageOS
• September's security patches
• screenshot QuickSettings tile (first attempt, still broken - will fix it soon)

August 23rd:​

• synced w/ LineageOS (incl. August's patches)
• WiFi display is back (thanks to the Lineage team!)
• sporadic camera crashes are fixed (thanks to Nolen, the other bacon maintainer!)

July 10th:​

• synced with LineageOS + July's patches
• DRM fixes (Clearkey support)

June 16th:​

• GPS improvements (hopefully now it'll work fine!)

June 10th:​

• synced with LineageOS (incl. June's security patches)
• GPS fixes (work in progress)
• some kernel updates and improvements

May 7th:​

• synced with LineageOS (w/ May's security patches)
• updates for ART and bionic

April 29th:​

• synced with LineageOS
• updated libyuv and libvpx
• -O3 optimizations for critical system components
• USB notifications have lower priority
• minor miscellaneous tweaks

April 19th:​

• synced with LineageOS (NFC fix included)
• GPS updates and improvements
• touch response optimizations
• minor tweaks and fixes

April 8th:​

• synced with LineageOS (w/ April's security patches + fix for display issue)
• some kernel updates
• lots of debugging code disabled
• updates for jemalloc, sqlite, bionic, libcore and libpng

March 9th:​

• synced with LineageOS (w/ March's security patches)
• some kernel updates
• encryption is now working

February 27th:​

• synced with LineageOS
• minor kernel updates

February 9th:​

• synced with LineageOS (with February's security patches)
• some kernel fixes & updates
• fix for the Gallery showing the previous photo instead of the new one, immediately after taking one

Ferbuary 3rd:​

• bootloop fix

February 2nd:​

• synced with LineageOS
• WiFi hotspot fixed
• Dynamic processing audio library
• in-built F-Droid Privileged Extension
• Dual-channel SBC codec for bluetooth headphones/speakers (untested, must be set in Developer Options)
• minor tweaks to reduce memory usage (with negligible impacts on performance and/or graphic quality)
• my custom kernel has been implemented

January 21st:​

• synced with LineageOS
• updated & improved sqlite library (huge performance boost)
• optimized zlib library
• improvements for ART's memory usage
• support for OTA updates

January 6th:​

• synced with LineageOS (January's security patches)

January 3rd:​

• synced with LineageOS
• lockscreen PIN possibly fixed? Please confirm

December 26th:​

• fixed signature spoofing
• synced with LineageOS

December 21st:​

• added support for signature spoofing (MicroG) and UnifiedNLP

December 14th:​

• initial build

DOWNLOADS
Unified download link for both 17.1 and 18.1: SourceForge
Recommended Gapps package (official MindTheGapps): here

Spoiler: older 2020 builds

Older 18.1 builds are available here: AFH
Previous 17.1 builds are available either on AFH or on MEGA (17.1) / on MEGA (18.1).

A BIG "THANK YOU" TO
the whole LineageOS team, and the multitude of great developers of the Android custom ROM scene, such as kdrag0n, kerneltoast (Sultanxda), nathanchance, flar2, franciscofranco, frap129, the MSM-Xtended project, the crDroid project. I hope I have not forgotten anyone.

 

[Tomoms]

POST-INSTALLATION ADVICE

GAPPS COMPATIBILITY
Only use MindTheGapps.

SETTING UP MICROG
Signature spoofing is supported but not enabled out of the box. There's no switch to enable it in Settings, you must grant its permission to each app that needs it. In particular, if you install MicroG (either via the apks or via MinMicroG), you must run these commands in a root shell:

pm grant com.google.android.gms android.permission.FAKE_PACKAGE_SIGNATURE
pm grant com.android.vending android.permission.FAKE_PACKAGE_SIGNATURE

then make sure all the checkboxes in MicroG's status screen are ticked and reboot.

SETTING UP VIPER4ANDROID
If you follow these steps carefully, you'll manage to install Viper4Android while keeping Enforcing SELinux, and it will survive across ROM updates too
Since XDA Labs has been dead for a while, I've reuploaded Viper4Android's apk installer here: https://mega.nz/file/htFikD6Y#HpcdSMSa6fPdB5EXhGnyYI4uoxA7R4TnzhAZD_J_jrk

PASSING SAFETYNET
Passing SafetyNet is quite easy. You need to have Gapps installed, though. Flash Magisk, enable Magisk Hide in its settings, reboot. Now you should pass SafetyNet.

GRABBING LOGS
If you have faced an issue, please provide logs when reporting it.
If the issue involved a random reboot of the device -> let the phone boot up again and immediately grab a copy of /proc/last_kmsg (important: don't turn off or reboot the phone a second time, otherwise it'll be useless).
If the issue did not involve a random reboot of the device, but instead some "softer" crash (e.g. an app crashing, a SystemUI restart...) -> grab a logcat using any app such as Logcat Reader or plug the phone to a computer and pull it using the adb logcat > logfile.txt command.

 

[Tomoms]

Reserved

 

[zalamandra]

First! I'm happy to finally see a real thread for this.

 

[kunalshgkr]

Perfect combination Sultans camera and idprophecy ROM.
question- can charging rate be varied using kernel auditor mod app?
Because whenever I'm installing a ROM having sultan customisation included my OPO charges very slowly(180mA).

 

[Tomoms]

Perfect combination Sultans camera and idprophecy ROM.
question- can charging rate be varied using kernel auditor mod app?
Because whenever I'm installing a ROM having sultan customisation included my OPO charges very slowly(180mA).

I don't know if KA mod has that feature. However it's possible to change the maximum charging current intensity with any text editor, check the second post of Neon kernel's thread: I've explained how to do it. However is the problem occurs only on sultanized ROMs, it might also be that the different battery driver thinks that your cable is faulty, and so it reduces the charging speed. I've had a similar issue when using the Linux 3.10 kernel on my phone.

 

[FSadino]

I don't know if KA mod has that feature

KA mod sure has that feature if kernel has support for it

 

[Tomoms]

KA mod sure has that feature if kernel has support for it

OK, the kernel supports it, so there should be no problem tweaking that value.

 

[kunalshgkr]

I don't know if KA mod has that feature. However it's possible to change the maximum charging current intensity with any text editor, check the second post of Neon kernel's thread: I've explained how to do it. However is the problem occurs only on sultanized ROMs, it might also be that the different battery driver thinks that your cable is faulty, and so it reduces the charging speed. I've had a similar issue when using the Linux 3.10 kernel on my phone.

Thanks for the reply. On your ROM my OPO is charging normally. Actually I was asking can the charging rate be varied in your kernel because in most of the kernel it is disabled. By the way I just installed this ROM awesome ROM but I'm experiencing slight lag in UI.

 

[Wa.Sobchack]

I've tested v10 of your kernel last weekend. I also had lags while scrolling. Did you remove cpu and touch boost? Couldn't find settings in cpu section of adiutor mod. Or are they managed in governor settings?

 

[secretkloud]

@Tomoms

Nice of you to share your work. I was just crying about for a ROM (Sultan base + OMS) and a good person linked me here. As it's relatively new I'm very optimistic

I have a couple of questions:

Have you tried your ROM with Xposed? (I just switched to Nougat (ViperOS) and the SOT is terrible. I'm trying to see what the cause is)
Is this version of your ROM based on Sultan's Oct 22 release?

I have only one phone at the moment and can't risk it with testings. My choices are reliant on your answers and the Epic XDA Community. Thanks in advance...

 

[Tomoms]

I've tested v10 of your kernel last weekend. I also had lags while scrolling. Did you remove cpu and touch boost? Couldn't find settings in cpu section of adiutor mod. Or are they managed in governor settings?

CPU boosting is present but KA doesn't support it, so it looks like it's missing but it's actually working in the background.

@Tomoms

Nice of you to share your work. I was just crying about for a ROM (Sultan base + OMS) and a good person linked me here. As it's relatively new I'm very optimistic

I have a couple of questions:

Have you tried your ROM with Xposed? (I just switched to Nougat (ViperOS) and the SOT is terrible. I'm trying to see what the cause is)
Is this version of your ROM based on Sultan's Oct 22 release?

I have only one phone at the moment and can't risk it with testings. My choices are reliant on your answers and the Epic XDA Community. Thanks in advance...

Nope, I don't use Xposed nor have I tried it.
The release doesn't include all the changes brought by Sultan in the 22nd October build (it includes one out of two of them), however this is not a problem, because the change I left out is a small reversion related to in-call volume that was made by him only because "users were not amused" by the improvement. So the only thing this build doesn't include is not a fix for a bug, just a small volume adjustment decrease that was made because nobody noticed the increase that was brought in the Spetember 30th build, so there's nothing to be worried about. This build is just as good as Sultan's last one.

 

[DeadFox-xda]

Hey just to clarify is this based on sultan lineagos? I can see stuff committed by sultan

 

[Mr.Ak]

Hey just to clarify is this based on sultan lineagos? I can see stuff committed by sultan

Read OP.

 

[murti52]

Hey just to clarify is this based on sultan lineagos? I can see stuff committed by sultan

Yup, with his personal kernel and substratum support..!!

 

[zalamandra]

Yup, with his personal kernel and substratum support..!!

And f2fs support too!

 

[Setting.Out]

And f2fs support too!

Looks like that's been removed, but another file system looks like it's being implemented (at least partially).. #sdcardfs

 

[kunalshgkr]

Massive overnight battery drain

 

[JJohnson1988]

I'm so excited that my two favorite bacon ROMs have been merged together! Thanks for the effort.

Two things I have noticed for now:
- Camera appears to crash when snapping an HDR photo (similar to LineageOS camera's behavior)
- Quick unlock for four-digit PINs doesn't seem to work

 

[Tomoms]

Looks like that's been removed, but another file system looks like it's being implemented (at least partially).. #sdcardfs

They are two different things, and both are present in my ROM+kernel.