Comment 0 for bug 1313196

Using Ubuntu 13.10 on a HP ProBook 450 G1 notebook.
This system has a button to enable and disable the WLAN interface. This button has a led on it: it's white when the WLAN is enabled, orange when it is not.
Pressing this button, however, does not have any effect on both Ubuntu 13.10 and Mint 16 KDE (which is also based on Ubuntu 13.10).
When I press this button, the following output is produced in dmesg:

[ 1536.228861] atkbd serio0: Unknown key pressed (translated set 2, code 0xf8 on isa0060/serio0).
[ 1536.228872] atkbd serio0: Use 'setkeycodes e078 <keycode>' to make it known.
[ 1536.308669] atkbd serio0: Unknown key released (translated set 2, code 0xf8 on isa0060/serio0).
[ 1536.308680] atkbd serio0: Use 'setkeycodes e078 <keycode>' to make it known.

I can use rfkill block/unblock to enable/disable the WLAN interface.

There's just a minor difference in behaviour between Ubuntu and Mint: while in Mint the led correcly turns white when the WLAN interface is enabled (and the outcome of "rfkill block/unblock" is correctly reflected by the button led colour), in Ubuntu this led seems to always stay orange, even if the WLAN interface is active (and connection is correctly estabilished). Please note that I only tried to run Ubuntu from a USB stick (no installation at all, no update performed).

Please note that beside this wireless button there's another one to mute/unmute the system (this has a white/orange led on it too). This second button works perfectly on both systems (led colour is coherent and the audio output is muted/unmuted accordingly).

This is a follow up to bug #1246143 as requested by Christopher Penalver. That bug describes the same problem on a different HP system.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-12-generic 3.11.0-12.19
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 2907 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 2907 F.... pulseaudio
CasperVersion: 1.336ubuntu1
Date: Sat Apr 26 20:39:42 2014
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Hewlett-Packard HP ProBook 450 G1
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-12-generic N/A
 linux-backports-modules-3.11.0-12-generic N/A
 linux-firmware 1.116
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/13/2014
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: L74 Ver. 01.08
dmi.board.name: 1942
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 89.10
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrL74Ver.01.08:bd02/13/2014:svnHewlett-Packard:pnHPProBook450G1:pvrA3009DD10303:rvnHewlett-Packard:rn1942:rvrKBCVersion89.10:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 450 G1
dmi.product.version: A3009DD10303
dmi.sys.vendor: Hewlett-Packard