Blank screen after running

[abhisheksoni099]

Blank screen after running
After "flutter run" the screen remains blank in android emulator running on a Mac

To reproduce
Navigate to example

• cd example
• flutter run

Logs

🛑 flutter run

Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering
with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...                                  
Running Gradle task 'assembleDebug'... Done                        16.9s
✓ Built build/app/outputs/apk/debug/app-debug.apk.
D/EGL_emulation( 5446): eglMakeCurrent: 0xae4545a0: ver 3 0 (tinfo 0xaa0e0660)
Syncing files to device Android SDK built for x86...             1,103ms

Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h Repeat this help message.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).
An Observatory debugger and profiler on Android SDK built for x86 is available at: http://127.0.0.1:54597/EDMDMBW_8Os=/
I/WebViewFactory( 5446): Loading com.android.webview version 44.0.2403.119 (code 246011910)
D/        ( 5446): HostConnection::get() New Host Connection established 0xae44f180, tid 5457
D/        ( 5446): HostConnection::get() New Host Connection established 0xb2afe100, tid 5473
W/System  ( 5446): ClassLoader referenced unknown path: /system/app/webview/lib/x86
I/LibraryLoader( 5446): Time to load native libraries: 22 ms (timestamps 8412-8434)
I/LibraryLoader( 5446): Expected native library version number "",actual native library version number ""
V/WebViewChromiumFactoryProvider( 5446): Binding Chromium to main looper Looper (main, tid 1) {d2cfb07}
I/LibraryLoader( 5446): Expected native library version number "",actual native library version number ""
I/chromium( 5446): [INFO:library_loader_hooks.cc(120)] Chromium logging enabled: level = 0, default verbosity = 0
I/BrowserStartupController( 5446): Initializing chromium process, singleProcess=true
W/art     ( 5446): Attempt to remove non-JNI local reference, dumping thread
E/SysUtils( 5446): ApplicationContext is null in ApplicationStatus
W/chromium( 5446): [WARNING:resource_bundle.cc(285)] locale_file_path.empty()
E/libEGL  ( 5446): validate_display:255 error 3008 (EGL_BAD_DISPLAY)
E/libEGL  ( 5446): validate_display:255 error 3008 (EGL_BAD_DISPLAY)
D/EGL_emulation( 5446): eglCreateContext: 0xb409a860: maj 3 min 0 rcv 3
D/EGL_emulation( 5446): eglMakeCurrent: 0xb409a860: ver 3 0 (tinfo 0xa9fff110)
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008cdf
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008824
E/DataReductionProxySettingListener( 5446): No DRP key due to exception:java.lang.ClassNotFoundException: com.android.webview.chromium.Drp
W/AudioManagerAndroid( 5446): Requires BLUETOOTH permission
W/art     ( 5446): Attempt to remove non-JNI local reference, dumping thread
I/art     ( 5446): Background sticky concurrent mark sweep GC freed 11396(770KB) AllocSpace objects, 3(60KB) LOS objects, 68% free, 1180KB/3MB, paused 9.054ms total 77.452ms
W/AwContents( 5446): onDetachedFromWindow called when already detached. Ignoring
W/chromium( 5446): [WARNING:data_reduction_proxy_config.cc(423)] SPDY proxy OFF at startup
I/flutter ( 5446): >>>>>>>>>>>>>>>>> ModelViewer initializing...
D/EGL_emulation( 5446): eglMakeCurrent: 0xa9ffc420: ver 3 0 (tinfo 0xaa0e03c0)
D/        ( 5446): HostConnection::get() New Host Connection established 0x9ee5ef00, tid 5500
D/EGL_emulation( 5446): eglCreateContext: 0x992ec020: maj 3 min 0 rcv 3
D/EGL_emulation( 5446): eglMakeCurrent: 0x992ec020: ver 3 0 (tinfo 0x9ccf6090)
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008cdf
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008824
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008073
D/EGL_emulation( 5446): eglCreateContext: 0x992ebc00: maj 3 min 0 rcv 3
D/EGL_emulation( 5446): eglMakeCurrent: 0x992ebc00: ver 3 0 (tinfo 0x9ccf6090)
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008cdf
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008824
W/BindingManager( 5446): Cannot call determinedVisibility() - never saw a connection for the pid: 5446
D/EGL_emulation( 5446): eglMakeCurrent: 0x992ec020: ver 3 0 (tinfo 0x9ccf6090)
D/EGL_emulation( 5446): eglMakeCurrent: 0x992ebc00: ver 3 0 (tinfo 0x9ccf6090)
I/chromium( 5446): [INFO:CONSOLE(126)] "Uncaught SyntaxError: Unexpected token )", source:  (126)
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x000085b5
E/eglCodecCommon( 5446): glUtilsParamSize: unknow param 0x00008073
D/EGL_emulation( 5446): eglMakeCurrent: 0xa9ffc420: ver 3 0 (tinfo 0xaa0e03c0)

Screenshots

[bpedazur]

The screen remains blank also in an Android emulator on Windows and physical Android devices. (Tested with Samsung s8, Samsung S20, Pixel 2XL, and Pixel 3)

[artob]

The blank screen would tend to indicate a too-old Chrome version (see google/model-viewer#1109 (comment)), but on the other hand your long list of devices you tested with would counter-indicate that.

@bpedazur Could you check what the newest Chrome version is on a device (or emulator) that has this issue?

[artob]

@sheky9 A closer examination of your log output indicates that your emulator is running a 2015-era release of Chrome or Chromium:

I/WebViewFactory( 5446): Loading com.android.webview version 44.0.2403.119 (code 246011910)

I'm afraid that such an old browser will definitely not work for the <model-viewer> web component this widget is based on. See google/model-viewer#1109.

@bpedazur I'd suggest to re-try with the latest 0.8.0 release, which has many enhancements and bug fixes.

I'm closing this for now, pending more information about the physical devices you had trouble with.

[tejaswivg]

I faced this problem in an emulator too. In my case I was already running Android 11.

What fixed it was setting the opengl version in the emulator to Opengl ES 3.0

However it still doesn't work on a physical device for me.