Ubuntu
libxcb package

  1. Bug #232364
  2. Comment #40

Comment 40 for bug 232364

Revision history for this message
Cody A.W. Somerville (cody-somerville) wrote : Re: dbus-launch freezes for unknown reason at session start

Further research seems to indicate to me that this is a known issue with XCB/Xlib since 2004.

http://osdir.com/ml/freedesktop.xcb/2004-03/msg00001.html

"So I'm declaring Xlib/XCB usable, aside from one irritating bug that I
haven't figured out how to track down yet (some apps sometimes hang
until an event is recieved). It'd help a lot if people would try
building freedesktop.org's Xlib with `configure --with-xcb`, and let me
know whether it works for them as a drop-in replacement for normal Xlib."

http://xcb.freedesktop.org/XCBCompletedTasks/

"17 Mar 2004
<...>
Current known Xlib/XCB bugs:
    * Internal connections are broken, which I think means input methods won't work.
    * Apps sometimes hang until an event is received.
    * Last I checked, the display managers I tested crashed"

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=52983&sid=01795b3f1f48fc2ea7bd55870380772e

"Non-technical/non-Linux people, feel free to skip this paragraph: For those who want to know, it's libX11's 1.1 release, which builds libX11 on top of XCB, the new low-level X library and protocol. There seems to be several deadlocks involved in waiting for responses from the X server."

and finally http://bugs.freedesktop.org/show_bug.cgi?id=9528