Screen brightness resets after turning off the screen

1. Ensure auto-brightness is disabled
2. reduce the brightness to minimum
3. turn off the device screen
4. turn on the screen again

What happens:
Brightness level changes to the "default" value even though the slider shows its at the lowest

Bug 1327180 is the equivalent for restarting the phone.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: powerd 0.15+14.10.20140428-0ubuntu1
ProcVersionSignature: Ubuntu 3.15.0-1.5-generic 3.15.0-rc5
Uname: Linux 3.15.0-1-generic x86_64
ApportVersion: 2.14.2-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jun 3 18:49:06 2014
InstallationDate: Installed on 2014-04-21 (42 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: powerd
UpgradeStatus: Upgraded to utopic on 2014-05-19 (15 days ago)