[Bug 84252] [SNA/HSW] DRI3 rendering gets stuck waiting for present idle notify event

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84252

--- Comment #13 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to comment #10)
> I can't get xtrace to work. I'm not sure if it's due to it not understanding
> the DRI3 protocol (it doesn't have a 'template' file for DRI3 and Present),
> or because of different reasons. At least I can't get even glxgears to work
> properly (it hangs before showing a window). DRI2 works though.
> 
> Any other ideas for tools useable to trace this?

It's just lacking the protocol definition, the data is still in the xtrace,
just need to learn hex...

Does it hang as fast as the xtrace suggests? Right at the very first request?

> Concerning the BO reuse thing. I've disabled bo_reuse but the issue still
> happens, same backtrace as before.

Right, that's reassuring, but I am curious as to whether that prevents it from
trying to construct two Pixmaps from the same handle - i.e. the splat in the
full debug log.

Most important question is does it really hang that early?

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