HWComposer: Error in notifyExpectedPresent call Unsupported
The following message could be seen in the logcat:
03-28 12:56:58.873 433 477 W HWComposer: Ignoring duplicate VSYNC event from HWC for display 0 (t=692786454000)
03-28 12:56:58.876 624 659 D DisplayManagerService: Ignore redundant display event 0/2 to 10058/1657
03-28 12:56:58.879 1096 1096 D DisplayRepository: combining enabled=[0], connectedExternalDisplayIds=[], ignored=[]
03-28 12:56:59.246 433 433 E HWComposer: Error in notifyExpectedPresent call Unsupported
03-28 12:56:59.246 433 433 E SurfaceFlinger: notifyExpectedPresentIfRequired failed to notifyExpectedPresentHint for display 0
03-28 12:57:01.315 1301 2292 V StandardNetworkDetailsTracker: Issuing scan request from WifiManager
03-28 12:57:01.316 624 1413 I WifiService: startScan uid=1000
03-28 12:57:04.132 624 1413 I WifiService: startScan uid=10062
03-28 12:57:04.201 433 477 W HWComposer: Ignoring duplicate VSYNC event from HWC for display 0 (t=698117435000)
03-28 12:57:04.212 433 433 E HWComposer: Error in notifyExpectedPresent call Unsupported
03-28 12:57:04.212 433 433 E SurfaceFlinger: notifyExpectedPresentIfRequired failed to notifyExpectedPresentHint for display 0
03-28 12:57:04.247 433 433 E HWComposer: Error in notifyExpectedPresent call Unsupported
03-28 12:57:04.247 433 433 E SurfaceFlinger: notifyExpectedPresentIfRequired failed to notifyExpectedPresentHint for display 0
03-28 12:57:04.266 624 659 I DisplayDeviceRepository: Display device changed: DisplayDeviceInfo{"Built-in Screen": uniqueId="local:0", 1920 x 1080, modeId 1, renderFrameRate 60.000004, defaultModeId 1, userPreferredModeId -1, supportedModes [{id=1, width=1920, height=1080, fps=60.000004, vsync=60.000004, alternativeRefreshRates=[50.0], supportedHdrTypes=[]}, {id=2, width=1920, height=1080, fps=50.0, vsync=50.0, alternativeRefreshRates=[60.000004], supportedHdrTypes=[]}, {id=3, width=1280, height=720, fps=60.000004, vsync=60.000004, alternativeRefreshRates=[50.0], supportedHdrTypes=[]}, {id=4, width=1280, height=720, fps=50.0, vsync=50.0, alternativeRefreshRates=[60.000004], supportedHdrTypes=[]}, {id=5, width=1024, height=768, fps=70.06936, vsync=70.06936, alternativeRefreshRates=[], supportedHdrTypes=[]}, {id=6, width=800, height=600, fps=60.31654, vsync=60.31654, alternativeRefreshRates=[], supportedHdrTypes=[]}], colorMode 0, supportedColorModes [0], hdrCapabilities HdrCapabilities{mSupportedHdrTypes=[], mMaxLuminance=500.0, mMaxAverageLuminance=500.0, mMinLuminance=0.0}, allmSupported false, gameContentTypeSupported false, density 160, 93.784 x 94.593 dpi, appVsyncOff 1000000, presDeadline 16666666, touch INTERNAL, rotation 0, type INTERNAL, address {port=0}, deviceProductInfo null, state ON, committedState ON, frameRateOverride , brightnessMinimum 0.0, brightnessMaximum 1.0, brightnessDefault 0.39763778, hdrSdrRatio NaN, FLAG_ALLOWED_TO_BE_DEFAULT_DISPLAY, FLAG_ROTATES_WITH_CONTENT, FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS, FLAG_TRUSTED, installOrientation 0, displayShape DisplayShape{ spec=729782573 displayWidth=1920 displayHeight=1080 physicalPixelDisplaySizeRatio=1.0 rotation=0 offsetX=0 offsetY=0 scale=1.0}}
hikey960-notifyExpectedPresent.log
On the hdmi monitor side, it could be seen like the video attached.