Comment 3 for bug 1046118

Same here. I'm on Ubuntu GNOME Remix. Doesn't seem to matter whether I'm playing a video (totem, vlc, YouTube, whatever) in fullscreen or not fullscreen, whether the timer in Brightness and Lock setting is set to 10 min, 1 hour or Never... The screen always goes black after 10 minutes. Always. (Unless I move the mouse or type on the keyboard, of course.)

[17:46] ~$ lsb_release -rd
Description: Ubuntu 12.10
Release: 12.10

[17:49] ~$ apt-cache policy gnome-control-center totem gnome-screensaver dbus libdbus-1-3
gnome-control-center:
  Installed: 1:3.4.2-0ubuntu19
  Candidate: 1:3.4.2-0ubuntu19
  Version table:
 *** 1:3.4.2-0ubuntu19 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
        100 /var/lib/dpkg/status
totem:
  Installed: 3.6.2-0ubuntu1~ubuntu12.10.1
  Candidate: 3.6.2-0ubuntu1~ubuntu12.10.1
  Version table:
 *** 3.6.2-0ubuntu1~ubuntu12.10.1 0
        500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ quantal/main i386 Packages
        100 /var/lib/dpkg/status
     3.4.3-0ubuntu5 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal-updates/main i386 Packages
     3.4.3-0ubuntu4 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
gnome-screensaver:
  Installed: 3.6.0-0ubuntu2
  Candidate: 3.6.0-0ubuntu2
  Version table:
 *** 3.6.0-0ubuntu2 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal-updates/main i386 Packages
        100 /var/lib/dpkg/status
     3.6.0-0ubuntu1 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
dbus:
  Installed: 1.6.4-1ubuntu4
  Candidate: 1.6.4-1ubuntu4
  Version table:
 *** 1.6.4-1ubuntu4 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
        100 /var/lib/dpkg/status
libdbus-1-3:
  Installed: 1.6.4-1ubuntu4
  Candidate: 1.6.4-1ubuntu4
  Version table:
 *** 1.6.4-1ubuntu4 0
        500 http://se.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
        100 /var/lib/dpkg/status
[17:49] ~$