WindowManager: Keyguard drawn timeout. Setting mKeyguardDrawComplete
WindowManager: Timeout waiting for drawn: undrawn=[Window{246666e u0 StatusBar}]
02-07 16:17:08.592101 750 6123 D PowerManagerService: releaseWakeLockInternal: lock=44622767 [show keyguard], flags=0x0
02-07 16:20:25.682355 750 5944 D PowerManagerService: acquireWakeLockInternal: lock=6912789, flags=0x1, tag="show keyguard", ws=null, uid=10035, pid=986
02-07 16:20:27.310719 750 1546 D PowerManagerService: releaseWakeLockInternal: lock=6912789 [show keyguard], flags=0x0
Android6.0 亮屏灭屏流程（DisplayPowerController、WMS）（一）WMS绘制
http://blog.csdn.net/kc58236582/article/details/54612777