Featured image of post AOSP android 12 20211009-0453 Polaris Build

AOSP android 12 20211009-0453 Polaris Build

Based on AOSP android-12.0.0_r2 tag. For those who want to try android 12 early.

Device Specific Changes:

  • Etude kernel:
    • Linux 4.9.285
    • disabled RT group sched to avoid the issue of Bluetooth failing to create RT timer thread
    • merged CAF tag LA.UM.9.8.r1-04000-SDM710.0 with fix on cdsp regression
  • Using the latest Pixel power HAL with ADPF support
  • Switched back to AOSP BT, so there will be no support for aptX-tws+
  • Updated DRM Clearkey to 1.4
  • Shipping DisplayDeviceConfig for JDI and EBBG panels to set fine-grained brightness ramp rates
  • Shipping cgroups and task_profiles configs in vendor to properly set up schedtune
  • SELinux is permissive and forced encryption is disabled for now

ROM Side Info:

  • Based on AOSP android-12.0.0_r2 tag
  • No GApps included
  • Note that if you cannot change the USB mode from notifications, you can do it by setting the default USB mode in developer options.

Clean flash guide:

  • Install the latest custom recovery (TWRP or OrangeFox)
  • Install firmware from MIUI V12.5.1.0 or MIUI V12.0.3.0, if you are not on it already. People using my PE and EvoX builds from android11 can skip this step.
  • Install ROM in recovery
  • Format data (the one you type “yes” to confirm)
  • Reboot

No GApps included.

Google Drive | 189 Cloud

Please report issues to jjpprrrr.

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