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[Bug 1397699] [NEW] Dell Latitude 2110: Brightness keys come through two input devices


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According to <https://wiki.ubuntu.com/Hotkeys/Troubleshooting>, "If the
events are reported by more than one input device then report a kernel
bug (Ubuntu linux package) because it should only send the event on one
device."  On my Latitude 2110, the brightness control keys (Fn+Up and
Fn+Down) seem to appear through two different devices, /dev/input/event3
("AT Translated Set 2 keyboard") and /dev/input/event4 ("Video Bus").
The keys also control the screen brightness, even in a text console.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-25-generic 3.16.0-25.33~14.04.2
ProcVersionSignature: Ubuntu 3.16.0-25.33~14.04.2-generic 3.16.7
Uname: Linux 3.16.0-25-generic i686
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: i386
CurrentDesktop: Unity
Date: Sun Nov 30 17:02:52 2014
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
EcryptfsInUse: Yes
InstallationDate: Installed on 2010-06-09 (1635 days ago)
InstallationMedia: Ubuntu GNU/Linux 9.10 "Karmic" - Build i386 LIVE Binary 20100121-21:52
SourcePackage: linux-lts-utopic
UpgradeStatus: Upgraded to trusty on 2014-08-15 (106 days ago)

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

** Tags: apport-bug i386 trusty
Dell Latitude 2110: Brightness keys come through two input devices
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