How to wake up Android from mouse or keyboard

[mrtatertot]

I added a PARTIAL_WAKE_LOCK to Launcher3 and I am able to wake the Tinker Board from mouse and keyboard after reloading the updated Android image. Note that the PARTIAL_WAKE_LOCK prevents the system from fully going to sleep, but the display still turns off normally after the display off timeout.

If you want to do the same, you can make changes to the two files as below:

1) AndroidManifest.xml at {croot}/packages/apps/Launcher3/AndroidManifest.xml

Code:

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 6c5990d..07109ab 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -49,6 +49,9 @@
     <uses-permission android:name="com.android.launcher3.permission.READ_SETTINGS" />
     <uses-permission android:name="com.android.launcher3.permission.WRITE_SETTINGS" />
 
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+
     <application
         android:backupAgent="com.android.launcher3.LauncherBackupAgent"
         android:fullBackupOnly="true"

and 2) Launcher.java at {croot}/packages/apps/Launcher3/src/com/android/launcher3/Launcher.java

Code:

diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 3b5cd02..110a891 100755
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -86,6 +86,9 @@ import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import android.os.PowerManager;
+
 import com.android.launcher3.DropTarget.DragObject;
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
@@ -366,6 +369,9 @@ public class Launcher extends Activity
 
     private RotationPrefChangeHandler mRotationPrefChangeHandler;
 
+    private PowerManager.WakeLock mWakeLock;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         if (DEBUG_STRICT_MODE) {
@@ -392,6 +398,13 @@ public class Launcher extends Activity
 
         super.onCreate(savedInstanceState);
 
+        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
+        this.mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
+        this.mWakeLock.acquire();
+
         LauncherAppState app = LauncherAppState.getInstance();
 
         // Load configuration-specific DeviceProfile
@@ -1940,6 +1953,9 @@ public class Launcher extends Activity
     public void onDestroy() {
         super.onDestroy();
 
+        this.mWakeLock.release();
+
         // Remove all pending runnables
         mHandler.removeMessages(ADVANCE_MSG);
         mHandler.removeMessages(0);