[ConsoleKit] Permissions with consolekit and gdm

[Christoph Pleger]

Hello,

I have been using pam_devperm.so for a long time. pam_devperm.so is a
PAM module that, with my configuration, changes the ownerships and
permissions of some device nodes in /dev when a user logs in on :0, so
that the device nodes belong to that user and get permissions 600.

Now I realized that if consolekit is installed and additionally gdm is
used as display manager, the permissions of the device nodes are set to
600, but then they are reset to 660.

What does consolekit do that causes the permissions to be changed if
gdm is used as display manager?

Regards
  Christoph