Ubuntu
compiz package

  1. Bug #1244754
  2. Comment #8

Comment 8 for bug 1244754

Revision history for this message
Christopher Townsend (townsend) wrote : Re: compiz freezes when dragging a window to the top bar after being semi-maximized

I got a stack trace of the condition It's stuck polling in xcb_wait_for_reply() which is part of libxcb. In the past, there have been issues in this area in libxcb, but not for some time apparently. It's hard to tell at this point if Compiz is doing something wrong prior to this hang or if this is some issue in libxcb.

One very interesting data point is that in my debugging, I was able to reproduce this issue 100% using LibreOffice. Then during my debugging, the issue suddenly went away. I tried a different user on the machine and can reproduce it 100% of the time. I've tried resetting all Compiz/Unity settings back to default, but still cannot reproduce this using this user. It is very strange why one user on the machine can reproduce this while another cannot. This leads me to belive it's a setting that can trigger this, but I cannot figure out what it is.