我们的HDMI服务有问题。我们的Android TV应用在STB上设置为默认设置。当您启动STB时，它不会显示启动器，而是会在播放HLS视频流时立即向您显示App。为了播放视频，我们使用Exo Player版本2.6.1和Exo Media wrapper版本4.1.0。我们会不时地调查STB睡眠后唤醒时的黑屏-由DPAD打开电源。在这种情况下，播放列表可以正常工作，并且将频道切换到其他频道效果很好。此问题通常是在同一用户处产生的。
这是我们在屏幕黑屏时从日志中获得的内容（URL_TEST是我们的播放列表请求）：
09-06 19:21:40.018 I/PowerManagerService( 369): Waking up from sleep...
09-06 19:21:40.018 I/WindowManager( 369): No lock screen!
09-06 19:21:40.038 I/AudioHardwareALSA( 104): AudioHardwareALSA::setParameters() screen_state=on
09-06 19:21:40.038 I/qtaguid ( 369): Failed write_ctrl(s 1 10056) res=-1 errno=1
09-06 19:21:40.038 W/NetworkManagementSocketTagger( 369): setKernelCountSet(10056, 1) failed with errno -1
09-06 19:21:40.078 D/LightsService( 369): Excessive delay setting light: 54ms
09-06 19:21:41.018 W/SurfaceFlinger( 101): Timed out waiting for hw vsync; faking it
09-06 19:21:41.158 W/OkHttp ( 682): previous digest authentication with same nonce failed, returning null
09-06 19:21:41.158 D/OkHttp ( 682): Cached authentication expired. Sending a new request.
09-06 19:21:42.018 W/SurfaceFlinger( 101): Timed out waiting for hw vsync; faking it
09-06 19:21:42.098 D/DAKARMainActivity( 682): URL_TEST getUri: http://XXX.XXX.XX.XXX:XXXXX/XLIVE/0431233...8355920521/26/3/stream.m3u8
09-06 19:21:43.098 W/SurfaceFlinger( 101): Timed out waiting for hw vsync; faking it
09-06 19:21:43.428 W/DisplayD( 97): iface id HDMI screen is 0
09-06 19:21:43.428 D/Displaymanager( 97): [setHDMIEnable] display 0
09-06 19:21:43.428 D/Displaymanager( 97): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-06 19:21:43.428 D/Displaymanager( 97): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-06 19:21:43.438 W/Displaymanager( 97): interface 4 not support led
09-06 19:21:43.648 I/ActivityManager( 369): Config changes=1400 {1.0 ?mcc?mnc en_LU ldltr sw720dp w1280dp h672dp 160dpi lrg long land -touch -keyb/v/h dpad/v s.8}
09-06 19:21:43.658 D/RemoteControlManager( 369): BroadcastReceiver:android.intent.action.CONFIGURATION_CHANGED
在一切正常且视频在同一设备上启动后开始播放时，我们从日志中获得的内容（URL_TEST是我们的播放列表请求）：
09-05 19:21:58.507 I/PowerManagerService( 369): Waking up from sleep...
09-05 19:21:58.517 I/WindowManager( 369): No lock screen!
09-05 19:21:58.527 D/SurfaceFlinger( 102): Screen acquired, type=0 flinger=0x40691318
09-05 19:21:58.537 I/AudioHardwareALSA( 105): AudioHardwareALSA::setParameters() screen_state=on
09-05 19:21:58.537 I/qtaguid ( 369): Failed write_ctrl(s 1 10056) res=-1 errno=1
09-05 19:21:58.537 W/NetworkManagementSocketTagger( 369): setKernelCountSet(10056, 1) failed with errno -1
09-05 19:21:58.577 W/DisplayD( 98): iface id HDMI screen is 0
09-05 19:21:58.577 D/Displaymanager( 98): [setHDMIEnable] display 0
09-05 19:21:58.577 D/Displaymanager( 98): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-05 19:21:58.577 D/Displaymanager( 98): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-05 19:21:58.577 W/Displaymanager( 98): interface 4 not support led
09-05 19:21:58.587 D/LightsService( 369): Excessive delay setting light: 59ms
09-05 19:21:58.797 D/RemoteControlManager( 369): BroadcastReceiver:android.intent.action.CONFIGURATION_CHANGED
09-05 19:21:58.797 D/Environment( 369): screen raw size:1280,720
09-05 19:21:58.797 I/ActivityManager( 369): Config changes=1400 {1.0 ?mcc?mnc en_LU ldltr sw720dp w1280dp h672dp 160dpi lrg long land -touch -keyb/v/h dpad/v s.9}
09-05 19:21:58.947 W/OkHttp ( 681): previous digest authentication with same nonce failed, returning null
09-05 19:21:58.947 D/OkHttp ( 681): Cached authentication expired. Sending a new request.
09-05 19:21:59.077 I/Displaymanager( 98): updatesinkaudioinfo: 0x408de140
09-05 19:21:59.077 I/Displaymanager( 98): BUF: AC3,LPCM,
09-05 19:21:59.077 I/Displaymanager( 98):
09-05 19:21:59.077 W/DisplayD( 98): Send msg Iface added HDMI
09-05 19:21:59.137 D/DAKARMainActivity( 681): URL_TEST getUri: http://XXX.XXX.XX.XXX:13888/XLIVE/4086274310...086993824321/26/3/stream.m3u8
09-05 19:21:59.417 I/OMXClient( 681): Using client-side OMX mux.
09-05 19:21:59.417 I/ ( 681): new RKOMXPlugin
09-05 19:21:59.427 D/ACodec ( 681): MEDIA_MIMETYPE_AUDIO_AAC sampleRate 48000 wifidisplay_flag 0 info 6c5bbe78
09-05 19:21:59.427 E/OMXNodeInstance( 681): OMX_GetExtensionIndex failed
从日志中我们注意到，当我们遇到黑屏时，在视频请求后我们会收到以下Displaymanager（HDMI）消息：
09-06 19:21:42.098 D/DAKARMainActivity( 682): URL_TEST getUri: http://XXX.XXX.XX.XXX:XXXXX/XLIVE/0431233...8355920521/26/3/stream.m3u8
09-06 19:21:43.098 W/SurfaceFlinger( 101): Timed out waiting for hw vsync; faking it
09-06 19:21:43.428 W/DisplayD( 97): iface id HDMI screen is 0
09-06 19:21:43.428 D/Displaymanager( 97): [setHDMIEnable] display 0
09-06 19:21:43.428 D/Displaymanager( 97): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-06 19:21:43.428 D/Displaymanager( 97): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-06 19:21:43.438 W/Displaymanager( 97): interface 4 not support led
一切正常后，反之亦然-请参阅上面的日志。
我们假设黑屏可能是由HDMI服务引起的，当我们请求视频流时，HDMI服务就会出现UP。
我们已尝试通过所有这些方法检测HDMI连接（当HDMI连接/打开后，我们开始播放视频）-How to check the HDMI device connection status in Android?，但无济于事。
Android版本17。
任何想法可能导致此问题吗？
UPD1：
答案 0 :(得分：2)
ExoPlayer更新为2.8.4，ExoMedia更新为4.2.3的问题已解决