[Bug 226194] Re: Compiz lots of CPU to draw to an X display which is not even displayed (e.g. after user switch)

[Ian Johnston]

I am seeing precisely this problem. The culprit in my case was a Cairo
clock with the seconds hand displayed. With that displayed on an
otherwise blank desktop, CPU use is negligible. If I then switch to
another user (without the clock), one CPU stays pegged at 100%. Removing
the Cairo clock from the first desktop solves the problem in this case
... but it reappears whenever /anything/ tries to update the desktop for
a non-active user.

As requested from the Other Guy, here are my compiz versions

compiz:
  Installed: 1:0.8.2-0ubuntu8
  Candidate: 1:0.8.2-0ubuntu8
  Version table:
 *** 1:0.8.2-0ubuntu8 0
        500 http://gb.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

compiz-core:
  Installed: 1:0.8.2-0ubuntu8
  Candidate: 1:0.8.2-0ubuntu8
  Version table:
 *** 1:0.8.2-0ubuntu8 0
        500 http://gb.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

compiz-gnome:
  Installed: 1:0.8.2-0ubuntu8
  Candidate: 1:0.8.2-0ubuntu8
  Version table:
 *** 1:0.8.2-0ubuntu8 0
        500 http://gb.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

In case it's of interest, I'm using an nVidia FX5200 and the proprietary
drivers:

nvidia-glx-173:
  Installed: 173.14.16-0ubuntu1
  Candidate: 173.14.16-0ubuntu1
  Version table:
 *** 173.14.16-0ubuntu1 0
        500 http://gb.archive.ubuntu.com jaunty/restricted Packages
        100 /var/lib/dpkg/status

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Compiz lots of CPU to draw to an X display which is not even displayed (e.g. after user switch)
https://bugs.launchpad.net/bugs/226194
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