flutter-embedded-linux: Can't run Gallery app

We found out why the Gallery app doesn’t work properly. Using wl_display_dispatch is the reason for not work Gallery app. The events from Engine while waiting for Wayland events using wl_display_dispatch aren’t handled…

@jcviau

For us, the main problem is related to the touch gesture.

Thank you for reporting a bug. I created a new issue for this bug. https://github.com/sony/flutter-embedded-linux/issues/127

@jcviau @psstoyanov @jwinarske

Thanks a lot. We were also investigating this issue. As @jcviau mentioned, we found that problems occur when using restorationScopeId property. We have confirmed that the same problem occurs with a simpler sample.

I found if ‘LC_ALL’ (locale) is not set properly it just displays a gray screen. I didn’t have to edit any Dart code. This could also be impacting the Shrine app etc.

I tried with LC_ALL set but I still had to remove the same line in main.dart to make the application appear. It’s not even gray, it’s not visible at all when this line is present.

Note: You can also hard code the locale in the application by changing locale:null (in main.dart) to something else. e.g. locale: const Locale(‘en’, ‘’). That’s what I did initially instead of setting LC_ALL.

Thanks, that’s good to know.

I will set aside a bit of time this Sunday to try to gather some further information. Possibly go through the other example app that deals with mobile/ desktop optimisation to see if it’s limited just to the Gallery app.

I’ve confirmed that it works fine when I use the DRM backend on my desktop.

Possibly this has something to do with the Gallery app being one of the examples for adaptive UI (mobile/ desktop)?

Yes, I think so.

I need to do debugging, but I think this is a Flutter Engine issue.

Thank you for your report. I’ll check that later. (cc @Mai-Matsuura)