开发平台：MT6737T 屏：mipi 4 lane， 720X1280 问题： 在多次唤醒后待机，会概率...

bleachangel

开发平台：MT6737T 屏：mipi 4 lane， 720X1280

问题：
在多次唤醒后待机，会概率性出现待机不成功，同时power键也无法开机。
比较正常和异常情况下log的差异，发现问题出现在 Framework 的display模块。dumpsys display如下：
aeon6737t_66_n:/ $ dumpsys display
DISPLAY MANAGER (dumpsys display)
  mOnlyCode=false
  mSafeMode=false
  mPendingTraversal=false
  mGlobalDisplayState=OFF
  mNextNonDefaultDisplayId=1
  mDefaultViewport=DisplayViewport{valid=true, displayId=0, orientation=0, logicalFrame=Rect(0, 0 - 1280, 720), physicalFrame=Rect(0, 0 - 1280, 720), deviceWidth=1280, deviceHeight=720}
  mExternaltouchViewport=DisplayViewport{valid=false, displayId=0, orientation=0, logicalFrame=Rect(0, 0 - 0, 0), physicalFrame=Rect(0, 0 - 0, 0), deviceWidth=0, deviceHeight=0}
  mSingleDisplayDemoMode=false
  mWifiDisplayScanRequestCount=0

Display Adapters: size=4
  LocalDisplayAdapter
  OverlayDisplayAdapter
    mCurrentOverlaySetting=
    mOverlays: size=0
  WifiDisplayAdapter
    mCurrentStatus={"featureState":2,"scanState":0,"activeDisplayState":0,"activeDisplay":{},"display":[],"sessionInfo":{"CLIentOrOwner":"client","groupId":"","passphrase":"","sessionId":0,"ipAddress":""}}
    mFeatureState=2
    mScanState=0
    mActiveDisplayState=0
    mActiveDisplay=null
    mDisplays=[]
    mAvailableDisplays=[]
    mRememberedDisplays=[]
    mPendingStatusChangeBroADCast=false
    mSupportsProtectedBuffers=false
    mDisplayController:
      mWifiDisplayOnSetting=false
      mWifiP2pEnabled=false
      mWFDEnabled=false
      mWfdEnabling=false
      mNetworkInfo=null
      mScanRequested=false
      mDiscoverPeersInProgress=false
      mDesiredDevice=null
      mConnectingDisplay=null
      mDisconnectingDisplay=null
      mCancelingDisplay=null
      mConnectedDevice=null
      mConnectionRetriesLeft=0
      mRemoteDisplay=null
      mRemoteDisplayInterface=null
      mRemoteDisplayConnected=false
      mAdvertisedDisplay=null
      mAdvertisedDisplaySurface=null
      mAdvertisedDisplayWidth=0
      mAdvertisedDisplayHeight=0
      mAdvertisedDisplayFlags=0
      mBackupShowTouchVal=0
      mFast_NeedFastRtsp=false
      mFast_DesireDMAc=null
      mIsNeedRotate=false
      mIsConnected_OtherP2p=false
      mIsConnecting_P2p_Rtsp=false
      mIsWFDConnected=false
      mDRMContent_Mediaplayer=false
      mPlayerID_Mediaplayer=0
      mAvailableWifiDisplayPeers: size=0
  VirtualDisplayAdapter

Display Devices: size=1
  DisplayDeviceInfo{"Built-in Screen": uniqueId="local:0", 1280 x 720, modeId 1, defaultModeId 1, supportedModes [{id=1, width=1280, height=720, fps=60.000004}], colorTransformId 1, defaultColorTransformId 1, supportedColorTransforms [{id=1, colorTransform=0}], HdrCapabilities android.view.Display$HdrCapabilities@b6f279f, density 240, 240.0 x 240.0 dpi, appVsyncOff -8000000, presDeadline 25666666, touch INTERNAL, rotation 0, type BUILT_IN, state OFF, FLAG_DEFAULT_DISPLAY, FLAG_ROTATES_WITH_CONTENT, FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS}
    mAdapter=LocalDisplayAdapter
    mUniqueId=local:0
    mDisplayToken=android.os.BinderProxy@407468e
    mCurrentLayerStack=-1
    mCurrentOrientation=0
    mCurrentLayerStackRect=Rect(0, 0 - 1280, 720)
    mCurrentDisplayRect=Rect(0, 0 - 1280, 720)
    mCurrentSurface=null
    mBuiltInDisplayId=0
    mActivePhysIndex=0
    mActiveModeId=1
    mActiveColorTransformId=1
    mState=OFF
    mBrightness=0
    mBacklight=com.android.server.lights.LightsService$LightImpl@e6c7eaf
    mDisplayInfos=
      PhysicalDisplayInfo{1280 x 720, 60.000004 fps, density 1.5, 240.0 x 240.0 dpi, secure true, appVsyncOffset -8000000, bufferDeadline 25666666, colorTransform 0}
    mSupportedModes=
      DisplayModeRecord{mMode={id=1, width=1280, height=720, fps=60.000004}}
    mSupportedColorTransforms=[
    {id=1, colorTransform=0}]

Logical Displays: size=1
  Display 0:
    mDisplayId=0
    mLayerStack=0
    mHasContent=true
    mRequestedMode=0
    mRequestedColorTransformId=0
    mDisplayOffset=(0, 0)
    mPrimaryDisplayDevice=Built-in Screen
    mBaseDisplayInfo=DisplayInfo{"Built-in Screen", uniqueId "local:0", app 1280 x 720, real 1280 x 720, largest app 1280 x 720, smallest app 1280 x 720, mode 1, defaultMode 1, modes [{id=1, width=1280, height=720, fps=60.000004}], colorTransformId 1, defaultColorTransformId 1, supportedColorTransforms [{id=1, colorTransform=0}], hdrCapabilities android.view.Display$HdrCapabilities@b6f279f, rotation 0, density 240 (240.0 x 240.0) dpi, layerStack 0, appVsyncOff -8000000, presDeadline 25666666, type BUILT_IN, state OFF, FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS}
    mOverrideDisplayInfo=DisplayInfo{"Built-in Screen", uniqueId "local:0", app 1280 x 720, real 1280 x 720, largest app 1280 x 1244, smallest app 720 x 684, mode 1, defaultMode 1, modes [{id=1, width=1280, height=720, fps=60.000004}], colorTransformId 1, defaultColorTransformId 1, supportedColorTransforms [{id=1, colorTransform=0}], hdrCapabilities android.view.Display$HdrCapabilities@b6f279f, rotation 0, density 240 (240.0 x 240.0) dpi, layerStack 0, appVsyncOff -8000000, presDeadline 25666666, type BUILT_IN, state ON, FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS}

Callbacks: size=32
  0: mPid=733, mWifiDisplayScanRequested=false
  1: mPid=991, mWifiDisplayScanRequested=false
  2: mPid=1006, mWifiDisplayScanRequested=false
  3: mPid=1256, mWifiDisplayScanRequested=false
  4: mPid=1274, mWifiDisplayScanRequested=false
  5: mPid=1288, mWifiDisplayScanRequested=false
  6: mPid=1307, mWifiDisplayScanRequested=false
  7: mPid=1508, mWifiDisplayScanRequested=false
  8: mPid=1555, mWifiDisplayScanRequested=false
  9: mPid=1627, mWifiDisplayScanRequested=false
  10: mPid=1643, mWifiDisplayScanRequested=false
  11: mPid=1659, mWifiDisplayScanRequested=false
  12: mPid=1704, mWifiDisplayScanRequested=false
  13: mPid=1826, mWifiDisplayScanRequested=false
  14: mPid=1882, mWifiDisplayScanRequested=false
  15: mPid=1905, mWifiDisplayScanRequested=false
  16: mPid=1990, mWifiDisplayScanRequested=false
  17: mPid=2056, mWifiDisplayScanRequested=false
  18: mPid=2071, mWifiDisplayScanRequested=false
  19: mPid=2089, mWifiDisplayScanRequested=false
  20: mPid=2106, mWifiDisplayScanRequested=false
  21: mPid=2124, mWifiDisplayScanRequested=false
  22: mPid=2145, mWifiDisplayScanRequested=false
  23: mPid=2175, mWifiDisplayScanRequested=false
  24: mPid=2191, mWifiDisplayScanRequested=false
  25: mPid=2208, mWifiDisplayScanRequested=false
  26: mPid=2248, mWifiDisplayScanRequested=false
  27: mPid=2269, mWifiDisplayScanRequested=false
  28: mPid=2285, mWifiDisplayScanRequested=false
  29: mPid=2300, mWifiDisplayScanRequested=false
  30: mPid=2316, mWifiDisplayScanRequested=false
  31: mPid=2333, mWifiDisplayScanRequested=false

Display Power Controller Locked State:
  mDisplayReadyLocked=false
  mPendingRequestLocked=policy=OFF, useProximitysensor=false, screenBrightness=102, screenAutoBrightnessAdjustment=0.0, brightnessSetByUser=true, useAutoBrightness=false, blockScreenOn=false, lowPowerMode=false, boostScreenBrightness=false, dozeScreenBrightness=-1, dozeScreenState=UNKNOWN, useTwilight=false
  mPendingRequestChangedLocked=false
  mPendingWaitForNegativeProximityLocked=false
  mPendingUpdatePowerStateLocked=false

Display Power Controller Configuration:
  mScreenBrightnessDozeConfig=1
  mScreenBrightnessDimConfig=10
  mScreenBrightnessDarkConfig=1
  mScreenBrightnessRangeMinimum=1
  mScreenBrightnessRangeMaximum=255
  mUseSoftwareAutoBrightnessConfig=true
  mAllowAutoBrightnessWhileDozingConfig=false
  mColorFadeFadesConfig=false

Display Power Controller Thread State:
  mPowerRequest=policy=OFF, useProximitySensor=false, screenBrightness=102, screenAutoBrightnessAdjustment=0.0, brightnessSetByUser=true, useAutoBrightness=false, blockScreenOn=false, lowPowerMode=false, boostScreenBrightness=false, dozeScreenBrightness=-1, dozeScreenState=UNKNOWN, useTwilight=false
  mWaitingForNegativeProximity=false
  mProximitySensor={Sensor name="PROXIMITY", vendor="mtk", version=1, type=8, maxRange=10.0, resolution=1.0, power=0.13, minDelay=0}
  mProximitySensorEnabled=false
  mProximityThreshold=5.0
  mProximity=Unknown
  mPendingProximity=Unknown
  mPendingProximityDebounceTime=-1 (139842 ms ago)
  mScreenOffBecauseOfProximity=false
  mAppliedAutoBrightness=false
  mAppliedDiMMIng=false
  mAppliedLowPower=false
  mPendingScreenOnUnblocker=null
  mPendingScreenOff=false
  mReportedToPolicy=REPORTED_TO_POLICY_SCREEN_OFF
  mScreenBrightnessRampAnimator.isAnimating()=false
  mColorFadeOnAnimator.isStarted()=false
  mColorFadeOffAnimator.isStarted()=false

Display Power State:
  mScreenState=OFF
  mScreenBrightness=10
  mScreenReady=false
  mScreenUpdatePending=false
  mColorFadePrepared=true
  mColorFadeLevel=0.0
  mColorFadeReady=true
  mColorFadeDrawPending=false

Photonic Modulator State:
  mPendingState=OFF
  mPendingBacklight=0
  mActualState=OFF
  mActualBacklight=0
  mStateChangeInProgress=true
  mBacklightChangeInProgress=false

Color Fade State:
  mPrepared=true
  mMode=1
  mDisplayLayerStack=0
  mDisplayWidth=1280
  mDisplayHeight=720
  mSurfaceVisible=true
  mSurfaceAlpha=1.0

Automatic Brightness Controller Configuration:
  mScreenAutoBrightnessSpline=MonotoneCubicSpline{[(0.0, 0.03137255: 0.0017156864), (128.0, 0.2509804: 0.0013786765), (256.0, 0.38431373: 6.1274506E-4), (384.0, 0.40784314: 1.8382352E-4), (512.0, 0.43137255: 1.8382352E-4), (640.0, 0.45490196: 1.8382352E-4), (768.0, 0.47843137: 1.8382363E-4), (896.0, 0.5019608: 1.8382363E-4), (1024.0, 0.5254902: 1.8382352E-4), (2048.0, 0.7137255: 1.61803E-4), (4096.0, 1.0: 0.0), (6144.0, 1.0: 0.0), (8192.0, 1.0: 0.0), (10240.0, 1.0: 0.0), (12288.0, 1.0: 0.0), (14336.0, 1.0: 0.0), (16384.0, 1.0: 0.0), (18432.0, 1.0: 0.0)]}
  mScreenBrightnessRangeMinimum=1
  mScreenBrightnessRangeMaximum=255
  mLightSensorWARMUpTimeConfig=0
  mBrighteningLightDebounceConfig=4000
  mDarkeningLightDebounceConfig=8000
  mResetAmbientLuxAfterWarmUpConfig=true

Automatic Brightness Controller State:
  mLightSensor={Sensor name="LIGHT", vendor="MTK", version=1, type=5, maxRange=10240.0, resolution=1.0, power=0.13, minDelay=0}
  mTwilight.getCurrentState()={TwilightState: isNight=false, mAmount=0.0}
  mLightSensorEnabled=false
  mLightSensorEnableTime=0 (139859 ms ago)
  mAmbientLux=0.0
  mAmbientLightHorizon=10000
  mBrighteningLuxThreshold=0.0
  mDarkeningLuxThreshold=0.0
  mLastObservedLux=0.0
  mLastObservedLuxTime=0 (139859 ms ago)
  mRecentLightSamples=0
  mAmbientLightRingBuffer=[]
  mInitialHorizonAmbientLightRingBuffer=[]
  mScreenAutoBrightness=-1
  mScreenAutoBrightnessAdjustment=0.0
  mScreenAutoBrightnessAdjustmentMaxGamma=3.0
  mLastScreenAutoBrightnessGamma=1.0
  mDozing=true
aeon6737t_66_n:/ $ dumpsys power                                               
POWER MANAGER (dumpsys power)

Power Manager State:
  mDirty=0x0
  mWakefulness=Asleep
  mWakefulnessChanging=true
  mIsPowered=false
  mPlugType=0
  mBatteryLevel=97
  mBatteryLevelWhenDreamStarted=0
  mDockState=0
  mStayOn=false
  mProximityPositive=false
  mBootCompleted=true
  mSystemReady=true
  mHalAutoSuspendModeEnabled=false
  mHalInteractiveModeEnabled=true
  mWakeLockSummary=0x0
  mUserActivitySummary=0x0
  mRequestWaitForNegativeProximity=false
  mSandmanScheduled=false
  mSandmanSummoned=false
  mLowPowerModeEnabled=false
  mBatteryLevelLow=false
  mLightDeviceIdleMode=false
  mDeviceIdleMode=false
  mDeviceIdleWhitelist=[10008]
  mDeviceIdleTempWhitelist=[]
  mLastWakeTime=118572 (31716 ms ago)
  mLastSleepTime=128576 (21712 ms ago)
  mLastUserActivityTime=118572 (31716 ms ago)
  mLastUserActivityTimeNoChangeLights=0 (150288 ms ago)
  mLastInteractivePowerHintTime=118572 (31716 ms ago)
  mLastScreenBrightnessBoostTime=0 (150288 ms ago)
  mScreenBrightnessBoostInProgress=false
  mDisplayReady=false
  mHoldingWakeLockSuspendBlocker=false
  mHoldingDisplaySuspendBlocker=true

Settings and Configuration:
  mDecoupleHalAutoSuspendModeFROMDisplayConfig=false
  mDecoupleHalInteractiveModeFromDisplayConfig=false
  mWakeUpWhenPluggedOrUnpluggedConfig=true
  mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig=false
  mTheaterModeEnabled=false
  mSuspendWhenScreenOffDueToProximityConfig=true
  mDreamsSupportedConfig=true
  mDreamsEnabledByDefaultConfig=true
  mDreamsActivatedOnSleepByDefaultConfig=false
  mDreamsActivatedOnDockByDefaultConfig=true
  mDreamsEnabledOnBatteryConfig=false
  mDreamsBatteryLevelMinimumWhenPoweredConfig=-1
  mDreamsBatteryLevelMinimumWhenNotPoweredConfig=15
  mDreamsBatteryLevelDrainCutoffConfig=5
  mDreamsEnabledSetting=true
  mDreamsActivateOnSleepSetting=false
  mDreamsActivateOnDockSetting=true
  mDozeAfterScreenOffConfig=false
  mLowPowerModeSetting=false
  mAutoLowPowerModeConfigured=false
  mAutoLowPowerModeSnoozing=false
  mMinimumScreenOffTimeoutConfig=10000
  mMaximumScreenDimDurationConfig=7000
  mMaximumScreenDimRatioConfig=0.20000005
  mScreenOffTimeoutSetting=60000
  mSleepTimeoutSetting=-1
  mMaximumScreenOffTimeoutFromDeviceAdmin=2147483647 (enforced=false)
  mStayOnWhilePluggedInSetting=0
  mScreenBrightnessSetting=102
  mScreenAutoBrightnessAdjustmentSetting=0.0
  mScreenBrightnessModeSetting=0
  mScreenBrightnessOverrideFromWindowManager=-1
  mUserActivityTimeoutOverrideFromWindowManager=10000
  mUserInactiveOverrideFromWindowManager=false
  mTemporaryScreenBrightnessSettingOverride=-1
  mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=NaN
  mDozeScreenStateOverrideFromDreamManager=0
  mDozeScreenBrightnessOverrideFromDreamManager=-1
  mScreenBrightnessSettingMinimum=10
  mScreenBrightnessSettingMaximum=255
  mScreenBrightnessSettingDefault=102
  mDoubleTapWakeEnabled=false

Sleep timeout: -1 ms
Screen off timeout: 10000 ms
Screen dim duration: 2000 ms

UID states:
  UID 1000: 0
  UID 1001: 0
  UID 1037: 16
  UID u0a1: 16
  UID u0a2: 16
  UID u0a10: 3
  UID u0a13: 5
  UID u0a21: 0
  UID u0a31: 16
  UID u0a33: 16
  UID u0a36: 10
  UID u0a38: 7
  UID u0a45: 16
  UID u0a48: 7
  UID u0a50: 10
  UID u0a56: 4
  UID u0a57: 16

Wake Locks: size=0

Suspend Blockers: size=4
  PowerManagerService.WakeLocks: ref count=0
PowerManagerService.Display: ref count=2
  PowerManagerService.Broadcasts: ref count=0
  PowerManagerService.WirelessChargerDetector: ref count=0

Display Power: state=ON

Wireless Charger Detector State:
  mGravitySensor={Sensor name="Gravity Sensor", vendor="AOSP", version=3, type=9, maxRange=19.6133, resolution=0.00390625, power=6.48, minDelay=10000}
  mPoweredWirelessly=false
  mAtRest=false
  mRestX=0.0, mRestY=0.0, mRestZ=0.0
  mDetectionInProgress=false
  mDetectionStartTime=0 (never)
  mMustUpdateRestPosition=false
  mTotalSamples=0
  mMovingSamples=0
  mFirstSampleX=0.0, mFirstSampleY=0.0, mFirstSampleZ=0.0
  mLastSampleX=0.0, mLastSampleY=0.0, mLastSampleZ=0.0


注意到mHoldingDisplaySuspendBlocker=true，说明没有Display模块的Suspend锁没有正常释放。
然后根据这个线索一直往下找，发现在执行getHwComposer().setPowerMode(type, mode)时没有返回，一直阻塞。


不知道各位有没有遇到类似的问题，或者能够看到setPowerMode源码？