попробуйте выполнить код уведомления.
PowerManager pm = (PowerManager) context
.getSystemService(Context.POWER_SERVICE);
boolean isScreenOn = pm.isScreenOn();
Log.e("screen on.................................", "" + isScreenOn);
if (isScreenOn == false)
{
WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK
| PowerManager.ACQUIRE_CAUSES_WAKEUP
| PowerManager.ON_AFTER_RELEASE, "MyLock");
wl.acquire(10000);
WakeLock wl_cpu = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"MyCpuLock");
wl_cpu.acquire(10000);
}
и в вашем файле manifest.xml необходимо следующее разрешение
<permission
android:name="com.manish.gcm.push.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.manish.gcm.push.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />