[Nouveau] [Bug 72979] New: garbage / parts of previous session displayed on login screen after reboot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72979

          Priority: medium
            Bug ID: 72979
          Assignee: nouveau at lists.freedesktop.org
           Summary: garbage / parts of previous session displayed on login
                    screen after reboot
        QA Contact: xorg-team at lists.x.org
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: vincent-fdt at vinc17.net
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

After rebooting a machine using the lightdm display manager, garbage / parts of
the user's previous session are displayed on the login screen, which is an
important security problem, as anyone with physical access to the keyboard and
screen of the machine can reboot it (no need to have an account for that). See
Debian bugs:
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700235
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732854

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