Acer Aspire 5742Z brightness keys not working

[Alkis Georgopoulos]

Attaching info requested in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/853244/comments/19

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-24-generic 3.2.0-24.37
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: alkisg 1705 F.... xfce4-volumed
                      alkisg 1736 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xb4400000 irq 44'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:10ec0272,10250487,00100001 HDA:80862804,80860101,00100000'
   Controls : 27
   Simple ctrls : 13
Date: Fri May 18 07:51:58 2012
HibernationDevice: RESUME=UUID=52f7a35f-fad8-4c9d-baf1-3d3087278f3c
InstallationMedia: Xubuntu 12.04 "Precise Pangolin" - Alpha amd64 (20120201.1)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 003: ID 064e:c21c Suyin Corp.
MachineType: Acer Aspire 5742Z
ProcEnviron:
 LANGUAGE=el:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=el_GR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=9ba52df4-ec9e-4e1c-bbd7-322f50437f94 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-24-generic N/A
 linux-backports-modules-3.2.0-24-generic N/A
 linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.24
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 5742Z
dmi.board.vendor: Acer
dmi.board.version: V1.24
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.24
dmi.modalias: dmi:bvnAcer:bvrV1.24:bd08/10/2011:svnAcer:pnAspire5742Z:pvrV1.24:rvnAcer:rnAspire5742Z:rvrV1.24:cvnAcer:ct10:cvrV1.24:
dmi.product.name: Aspire 5742Z
dmi.product.version: V1.24
dmi.sys.vendor: Acer