[Bug 524214] [NEW] [DellStudioXPS1340] Brightness Fn keys do not work properly

[Julian Lam]

Public bug reported:

Binary package hint: acpi

The brightness keys seem to work fine on a cold start - but after
hibernating or suspending, or even switching from AC to battery, the
brightness keys don't work properly.

Intended effect:
Brightness-Up and -Down keys increment monitor brightness by equal amounts (to a maximum of 15)

Actual effect:
Brightness is incremented by seemingly random amounts, and on occasion, brightness will randomly jump to an arbitrary value.

Notes:
Writing to /sys/devices/virtual/backlight/acpi_video0/brightness works fine. Just the hotkeys are malfunctioning.

ProblemType: Bug
Architecture: amd64
Date: Thu Feb 18 22:06:33 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: wl nvidia
Package: acpi (not installed)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
SourcePackage: acpi
Uname: Linux 2.6.31-19-generic x86_64

** Affects: acpi (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug

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[DellStudioXPS1340] Brightness Fn keys do not work properly
https://bugs.launchpad.net/bugs/524214
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