On my Vostro V130, the brightness keys are not recognized by the kernel in Natty, although the keycodes are seen by X or whatever is listening for keypresses, because the OSD notification for brightness appears.
[ 17.475526] atkbd serio0: Unknown key pressed (translated set 2, code 0x86 on isa0060/serio0).
[ 17.475537] atkbd serio0: Use 'setkeycodes e006 <keycode>' to make it known.
[ 17.616233] atkbd serio0: Unknown key pressed (translated set 2, code 0x86 on isa0060/serio0).
[ 17.616240] atkbd serio0: Use 'setkeycodes e006 <keycode>' to make it known.
[ 17.867532] atkbd serio0: Unknown key pressed (translated set 2, code 0x86 on isa0060/serio0).
[ 17.867539] atkbd serio0: Use 'setkeycodes e006 <keycode>' to make it known.
[ 18.198131] atkbd serio0: Unknown key pressed (translated set 2, code 0x86 on isa0060/serio0).
[ 18.198137] atkbd serio0: Use 'setkeycodes e006 <keycode>' to make it known.
This was for the brightness up key.
However, the actual brightness of the screen does not change.
Furthermore, no matter what the actual brightness setting is for this system, it is always seen in /sys/class/backlight/dell_brightness/ files are at value "15", the maximum.
According to showkey, the scancodes for the brightness up and brightness down keys, in order, are:
0xe0 0x54 0xe0 0xd4 # brightness up
0xe0 0x4c 0xe0 0xcc # brightness down
Still according to scankey, the keycodes are:
code clavier 225 appuyer # brightness up
code clavier 225 relâcher
code clavier 224 appuyer # brightness down
code clavier 224 relâcher
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AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mtrudel 2057 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe500000 irq 47'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:111d7605,1028049c,00100105 HDA:80862804,80860101,00100000'
Controls : 18
Simple ctrls : 10
DistroRelease: Ubuntu 11.01
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=b7ea33e4-59e3-4a3b-b91f-3c78757b0fd0
MachineType: Dell Inc. Vostro V130
Package: linux (not installed)
ProcEnviron:
LANGUAGE=fr_CA.UTF-8:fr:en_GB:en
PATH=(custom, user)
LANG=fr_CA.UTF-8
LC_MESSAGES=fr_CA.utf8
SHELL=/bin/zsh
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=8336ba63-9921-4049-af4d-5ffe1c22aaa4 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Regression: No
RelatedPackageVersions:
linux-restricted-modules-2.6.38-1-generic N/A
linux-backports-modules-2.6.38-1-generic N/A
linux-firmware 1.46
Reproducible: Yes
Tags: natty running-unity kernel-uncat needs-upstream-testing
Uname: Linux 2.6.38-1-generic x86_64
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
dmi.bios.date: 12/13/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0GD7D0
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A03
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd12/13/2010:svnDellInc.:pnVostroV130:pvrA03:rvnDellInc.:rn0GD7D0:rvrA03:cvnDellInc.:ct8:cvrA03:
dmi.product.name: Vostro V130
dmi.product.version: A03
dmi.sys.vendor: Dell Inc.
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