I am the author of an app called scrcpy, which mirrors Android devices on a computer.

A feature allows to mirror a device with the physical screen turned off, basically by calling SurfaceControl.setDisplayPowerMode() on a display retrieved using getPhysicalDisplayIds() and getPhysicalDisplayToken(): code.

Since commit e2f333728788ad88a65208a6119aed90e13e7040 in framework/base, these functions have been moved to DisplayControl in a system server, so we can't call them anymore in Android 14.

It seems this also impacts the similar feature in Android Studio.

Could you provide a way to restore the "turn screen off" feature in Android 14?

In particular, please do not expose an API which requires to be called from an Android app (scrcpy is a Java application run as shell, not an Android app, in particular it does not have access to a real Context).

If I may suggest, a simple command line tool callable from adb shell would be helpful, since many people want this feature even outside scrcpy (without requiring to execute Java code from shell). See for example this discussion.

Refs scrcpy issues #3784 #3927 #4330.

Thank you

Issue 303565669

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