[Bug 462338] [NEW] asus m51av brightness hotkey (fn+f5, fn+f6), there is an ACPI event but no keypress

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Using karmic on asus m51av, followed https://wiki.ubuntu.com/Hotkeys/Troubleshooting to check brightness hotkey. Neither keymap or xev detected fn+f5 or fn+f6, other combination of keys works.
acpi_listen gives me this for fn+f5
hotkey ATKD 00000026 00000001
hotkey ATKD 00000025 00000000
hotkey ATKD 00000024 00000001
hotkey ATKD 00000023 00000001
hotkey ATKD 00000022 00000011
hotkey ATKD 00000021 00000011
hotkey ATKD 00000020 00000033
hotkey ATKD 00000020 00000034
hotkey ATKD 00000020 00000035
hotkey ATKD 00000020 00000036
hotkey ATKD 00000020 00000037
hotkey ATKD 00000020 00000038

for fn+f6
hotkey ATKD 00000011 00000018
hotkey ATKD 00000012 00000012
hotkey ATKD 00000013 00000012
hotkey ATKD 00000014 00000002

Running /etc/acpi/events/asus-brightness-up or down doesn't work.

ProblemType: Bug
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  luis       3318 F.... pulseaudio
CRDA: Error: [Errno 2] Ficheiro ou directoria inexistente
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfdef8000 irq 22'
   Mixer name	: 'Realtek ALC663'
   Components	: 'HDA:10ec0663,10431878,00100001 HDA:10573055,10431316,00100700'
   Controls      : 17
   Simple ctrls  : 10
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfdfec000 irq 17'
   Mixer name	: 'ATI R6xx HDMI'
   Components	: 'HDA:1002aa01,00aa0100,00100000'
   Controls      : 4
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
Date: Wed Oct 28 01:47:15 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=4de6089e-a0f1-47ca-aa07-766fd56ded23
MachineType: ASUSTeK Computer Inc. M51Va
NonfreeKernelModules: fglrx
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=4360d354-7a49-45cf-b79b-36468d8ffcc8 ro quiet splash
ProcEnviron:
 LANGUAGE=pt_PT.UTF-8
 LANG=pt_PT.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
SourcePackage: linux
Uname: Linux 2.6.31-14-generic x86_64
dmi.bios.date: 11/17/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 211
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: M51Va
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr211:bd11/17/2008:svnASUSTeKComputerInc.:pnM51Va:pvr1.0:rvnASUSTeKComputerInc.:rnM51Va:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: M51Va
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.

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


** Tags: amd64 apport-bug
-- 
asus m51av brightness hotkey (fn+f5, fn+f6), there is an ACPI event but no keypress
https://bugs.launchpad.net/bugs/462338
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