Steps to Reproduce
- Run
flutter create freeze_bugto create example app. - Run
flutter runto launch app. - Click Fab a few times to show app is working.
- Click home button to return to home launcher.
- Press square button to launch task switcher and switch back to the Flutter app.
- Click the Fab button. App no longer responds to input.
Expected results:
I would expect the app to work as normal.
Actual results:
The app appears to freeze and it no longer responds to inputs, but on the console each tap results in a:
E/EGL_emulation( 5541): egl_window_surface_t::swapBuffers called with NULL buffer
E/EGL_emulation( 5541): tid 5568: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
I experienced this issue consistently on both a physical device and emulator; both running 7.1.1. I have only noticed this issue since updating to the latest stable release 1.20.2. Could this be related to issue #60576?
Logs
Running the app in full verbose mode shows the following at the point you switch back to the app via the task switcher and start clicking/tapping:
[+4204 ms] D/EGL_emulation( 5901): eglMakeCurrent: 0x7f7f623eeb20: ver 2 0 (tinfo 0x7f7f6045be00)
[+6565 ms] D/EGL_emulation( 5901): eglMakeCurrent: 0x7f7f622a3300: ver 2 0 (tinfo 0x7f7f64e68780)
[ +25 ms] D/EGL_emulation( 5901): eglMakeCurrent: 0x7f7f623eeb20: ver 2 0 (tinfo 0x7f7f6045be00)
[ ] D/EGL_emulation( 5901): eglMakeCurrent: 0x7f7f622a3300: ver 2 0 (tinfo 0x7f7f64e68780)
[ +52 ms] E/Surface ( 5901): queueBuffer: error queuing buffer to SurfaceTexture, -19
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(531): error 0x300d (EGL_BAD_SURFACE)
[+4892 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +2 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +27 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +6 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +18 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +15 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +14 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +16 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +17 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +17 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +16 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +17 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
[ +15 ms] E/EGL_emulation( 5901): egl_window_surface_t::swapBuffers called with NULL buffer
[ ] E/EGL_emulation( 5901): tid 5920: swapBuffers(498): error 0x300d (EGL_BAD_SURFACE)
Result of flutter analyze showed no errors:
Analyzing flutter_bug...
No issues found! (ran in 2.5s)
Flutter doctor:
[✓] Flutter (Channel stable, 1.20.2, on Linux, locale en_GB.UTF-8)
• Flutter version 1.20.2 at /home/ben/Development/flutter
• Framework revision bbfbf1770c (10 days ago), 2020-08-13 08:33:09 -0700
• Engine revision 9d5b21729f
• Dart version 2.9.1
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at /media/ubuntudata/Development/android/sdk
• Platform android-29, build-tools 29.0.2
• Java binary at: /home/ben/Development/android/android-studio/jre/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.
[✓] Android Studio (version 4.0)
• Android Studio at /home/ben/Development/android/android-studio
• Flutter plugin version 48.1.2
• Dart plugin version 193.7361
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
[✓] VS Code (version 1.48.0)
• VS Code at /usr/share/code
• Flutter extension version 3.13.2
[✓] Connected device (1 available)
• Android SDK built for x86 64 (mobile) • emulator-5554 • android-x64 • Android 7.1.1 (API 25) (emulator)
• No issues found!
When could we expect a release with a fix? will it be introduced as a hotfix release? As currently, flutter apps built with the latest SDK is fairly unusable with android 7👍
p.s I no longer can reproduce the issue on flutter master branch
Working on a hotfix now flutter/engine#20838