[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 #15 from Chris Wilson <chris at chris-wilson.co.uk> ---
Oh drat, xtrace is not going to work without some serious magic to handle the
fd passing. That's a nuisance.

Oh well, might as well see what the xserver debugging:

diff --git a/present/present.c b/present/present.c
index e838da7..4f1ea49 100644
--- a/present/present.c
+++ b/present/present.c
@@ -36,7 +36,7 @@ static uint64_t         present_event_id;
 static struct xorg_list present_exec_queue;
 static struct xorg_list present_flip_queue;

-#if 0
+#if 1
 #define DebugPresent(x) ErrorF x
 #else
 #define DebugPresent(x)

turns up.

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