Bryce,

as far as fixing the applications are concerned, I don't quite follow
why applications that used to work need to be fixed because libxcb
apparently one way or another changes an API contract that it has no
business of changing.

That being said, if somebody claims its the application's fault, I'd
really appreciate some information about what I need to fix around
somthing that wasn't even apparently broken with Xlib.

I can attach 3 backtraces of various ways xvidcap deadlocks with libxcb
(variant 3 resulting in a complete X11 lockup, so I need to ssh into the
box and kill xvidcap). The only thing I can see is that in one thread
I'm trying to do XShmGetImage on a locked X display while in the other
thread GTK does its stuff. Have I been doing this completely wrong for
years without noticing? And I've just recorded more than an hour of
screencasts without a single hang with your non-xcb libraries.

This issue keeps me from upgrading to intrepid because first I'll have
to find a way of compiling the required X11 libs without xcb.

** Attachment added: "lock1.txt"
   http://launchpadlibrarian.net/19120781/lock1.txt

-- 
hardy, locking assertion failure, xorg/libsdl
https://bugs.launchpad.net/bugs/185311
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