[Webkit-unassigned] [Bug 201507] [GTK] Accelerated compositing is disabled due to failure in EGL display creation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201507

--- Comment #16 from Michael Catanzaro <mcatanzaro at gnome.org> ---
(In reply to Michael Catanzaro from comment #3)
> OK I have a better reproducer! Visit https://q13fox.com/ and the page will
> crash immediately.

What I didn't realize when I added that comment is the bug is only reproducible once Epiphany gets into the "bad state" such that bug #202362 also occurs. Then it will crash 100% until Epiphany is restarted. But if you're not yet in this bad state, it works fine.

(In reply to Carlos Garcia Campos from comment #8)
> about:gpu info is still useful in any case

I can add a patch to our runtime to add about:gpu, if you want to provide a patch that builds against 2.26.1.

I won't update the runtime to 2.27.1 due to (a) the GitLab CI regression, it will become impossible to use Epiphany to develop Epiphany, and (b) the MSE regressions, I like to watch YouTube. So I want to keep Tech Preview on 2.26 for now.

(In reply to Carlos Garcia Campos from comment #14)
> Michael, it would help if you could add printfs to
> PlatformDisplayLibWPE::initialize() to show the hostFd and the native
> display returned by wpe_renderer_backend_egl_get_native_display() as a
> pointer.

This is more work than just adding a patch locally though. A local build isn't good enough because this bug is not reproducible; we need the patch in the real Tech Preview build for the debug to be available next time I notice the issue.

So I will add a debug patch to the runtime tomorrow. Please confirm that you still need it to print (a) hostFd, and (b) native display as a pointer, and (c) nothing else. If more would be helpful, now is the best time to add it because it would be nice to update the patch as few times as possible.

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