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[Bug 720912] [NEW] Maverick (through Precise) regression: Dell M1330 backlight brightness messed up

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From: Launchpad Bug Tracker <720912@xxxxxxxxxxxxxxxxxx>
Date: Sun, 16 Nov 2014 17:57:00 -0000
Reply-to: Bug 720912 <720912@xxxxxxxxxxxxxxxxxx>
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You have been subscribed to a public bug:

The Dell M1330 backlight has exactly 8 levels of brightness. I expect
each press of the brightness adjustment keys to change the brightness by
one level. When I use the keyboard to adjust the brightness in GNOME, it
sometimes changes by one level, and sometimes changes by two levels.

In Karmic, the buttons worked like I have describe above. In Lucid, everything worked correctly. In Maverick (and every subsequent release at least through Precise), we're back to the same behavior as in Karmic. So this is a regression in functionality.
---
Architecture: amd64
DistroRelease: Ubuntu 11.04
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
NonfreeKernelModules: nvidia wl
Package: acpid 1:2.0.7-1ubuntu2
PackageArchitecture: amd64
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Tags:  natty running-unity
Uname: Linux 2.6.38-11-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete


** Tags: apport-collected natty running-unity
-- 
Maverick (through Precise) regression: Dell M1330 backlight brightness messed up
https://bugs.launchpad.net/bugs/720912
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