diff --git a/services/core/java/com/android/server/display/DisplayManagerService.java b/services/core/java/com/android/server/display/DisplayManagerService.java index 6466b440b3a0d5b8be89bea0290204f8b227fc6a..bc7e15635035bff3c8526bd2525d9427a6a9f7f3 100644 --- a/services/core/java/com/android/server/display/DisplayManagerService.java +++ b/services/core/java/com/android/server/display/DisplayManagerService.java @@ -2868,7 +2868,16 @@ public final class DisplayManagerService extends SystemService { // Check if the target app is in cached mode private boolean isUidCached(int uid) { - if (mActivityManagerInternal == null) { + // Only query procState and importance for Android apps, which have UIDs starting + // from FIRST_APPLICATION_UID. . + // + // Other processes with UID < FIRST_APPLICATION_UID can also register to DMS for + // display events. E.g. Android Studio executes a screen sharing process to provide + // display mirroring functionality. That process inherits the UID of adb. Depending + // on adb mode, it can be shell (2000) or root (0). Those processes are not Android + // apps and not managed by AMS. Treat them as non-cached so never ignore or defer + // display events to them. + if (mActivityManagerInternal == null || uid < FIRST_APPLICATION_UID) { return false; } int procState = mActivityManagerInternal.getUidProcessState(uid);