[Bug 1485765] [NEW] screen brightness dims despite "dim screen to save power" setting disabled

[teo1978]

Public bug reported:

Since I have upgraded to 15.04 a couple of days ago, the screen
brightness automatically dims after a few seconds that I don't touch the
keyboard or touchpad, when running on battery.

This didn't use to happen before the upgrades on 14.04. So I've checked the settings and found this:
  "Dim screen to save power"
which was turned on (if it's a new setting, that makes sense; if this setting already existed, then there's a bug in dist-upgrade if it gets changed).

I DISABLED the setting, but the screen keeps dimming from time to time.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: powermgmt-base 1.31+nmu1
ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
Uname: Linux 3.19.0-25-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Aug 17 23:17:52 2015
Dependencies:
 
InstallationDate: Installed on 2013-10-11 (675 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: powermgmt-base
UpgradeStatus: Upgraded to vivid on 2015-08-15 (2 days ago)

** Affects: powermgmt-base (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid

** Attachment added: "Screenshot from 2015-08-17 23:17:12.png"
   https://bugs.launchpad.net/bugs/1485765/+attachment/4446113/+files/Screenshot%20from%202015-08-17%2023%3A17%3A12.png

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https://bugs.launchpad.net/bugs/1485765

Title:
  screen brightness dims despite "dim screen to save power" setting
  disabled

Status in powermgmt-base package in Ubuntu:
  New

Bug description:
  Since I have upgraded to 15.04 a couple of days ago, the screen
  brightness automatically dims after a few seconds that I don't touch
  the keyboard or touchpad, when running on battery.

  This didn't use to happen before the upgrades on 14.04. So I've checked the settings and found this:
    "Dim screen to save power"
  which was turned on (if it's a new setting, that makes sense; if this setting already existed, then there's a bug in dist-upgrade if it gets changed).

  I DISABLED the setting, but the screen keeps dimming from time to
  time.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: powermgmt-base 1.31+nmu1
  ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-25-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Aug 17 23:17:52 2015
  Dependencies:
   
  InstallationDate: Installed on 2013-10-11 (675 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  PackageArchitecture: all
  SourcePackage: powermgmt-base
  UpgradeStatus: Upgraded to vivid on 2015-08-15 (2 days ago)

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