[Bug 766954] General stream error or black screen on Wayland

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=766954

--- Comment #6 from Egor Zaharov <nexfwall at gmail.com> ---
Created attachment 328886
  --> https://bugzilla.gnome.org/attachment.cgi?id=328886&action=edit
Output of totem

(In reply to Víctor Manuel Jáquez Leal from comment #5)
> Thanks. This is interesting: two things
> 
> 1)  "vaGetSurfaceBufferWl(): the requested function is not implemented"
> 
> It seems that the gallium backend doesn't support Wayland.

Well, this is something. How does it work under mpv then?

When patches for support of DRI3 at gallium video driver landed, someone
removed `return VA_STATUS_ERROR_UNIMPLEMENTED;` from Wayland case. [1]

But still, SurfaceBuffer for Wayland is UNIMPLEMENTED. And this is weird.

> 2) Sadly, my pipeline is not correct for your setup, because it used
> vaapisink sink, not cluttersink. Could you upload the output of this command
> too?
> 
> GST_DEBUG_NO_COLOR=1 GST_DEBUG=vaapi*:5 totem Ad\ that\ make\ me\ mad.mp4

Done. There was a black screen. But audio played fine, until it stopped at
0:19. And I closed it.


[1]:
https://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/state_trackers/va/context.c?id=2cee0d0f9c9e9e269885b1d943ff123e033d9b52#n129

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