I'm reverting the bug status back to "Incomplete" for now, until someone can test whether the bug still exists in the current development release of Ubuntu. Before trying to fix bugs in older releases it is always sensible to first look whether it is already fixed in a newer release -- if it is, it makes sense to backport this fix. BTW: You do not need an installation of Oneiric (or Natty) to test, you can test it running it from an USB stick, for example.
I marked another bug as a duplicate of this bug, I'm copying my comment from there which might be helpful for you: "There are two different settings: Switching off the screen after a certain time (that is what you set with "Put display to sleep when inactive for" and uses hh:mm values) and "dim the screen when idle". The latter setting does not care for the time you set but uses a standard value of 10 seconds. You can change this value using gconf-editor ( /apps/gnome-power-manager/backlight/idle_dim_time ). I agree that this is not user-friendly and apparently also against what the documentation says." Finally, regarding your comment "Testing on new releases is a task I expect you, the vendor, to perform." Your use of the term "vendor" implies you paid for Ubuntu, I'd therefore suggest you raise this report in the respective channel of your support provider (e.g. if you are a subscriber of Canonical's "Ubuntu Home Support", log in to the online support portal at https://landscape.canonical.com/) ** Changed in: gnome-power-manager (Ubuntu) Status: Expired => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/513468 Title: "Dim display when idle" does not respect idle time setting To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/513468/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs