This happens also on a ZBook 15. This is what showkeys outputs when I press F8, Fn-F8, Ctrl-C
$ sudo showkey -s kb mode was ?UNKNOWN? [ if you are trying this under X, it might not work since the X server is also reading /dev/console ] press any key (program terminates 10s after last keypress)... 0x9c ^[[19~0x42 0xc2 0x39 0xb9 0x1d ^Ccaught signal 2, cleaning up... $ sudo showkey -k kb mode was ?UNKNOWN? [ if you are trying this under X, it might not work since the X server is also reading /dev/console ] press any key (program terminates 10s after last keypress)... keycode 28 release ^[[19~keycode 66 press keycode 66 release keycode 465 press keycode 465 release keycode 29 press ^Ccaught signal 2, cleaning up... Fn-F8 doesn't do anything in showkey -s, it displays the 465 events in showkey -k I'm on 12.04 LTS with the latest HWE kernel (almost, I should reboot to start using the 3.13.0-32.57~precise1 that came with the updates days ago). $ uname -a Linux ****** 3.13.0-30-generic #55~precise1-Ubuntu SMP Fri Jul 4 21:52:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -a LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu 12.04.4 LTS Release: 12.04 Codename: precise -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1334968 Title: [HP ProBook 445 G1] Microphone mute key does not work Status in HWE Next Project: New Status in “linux” package in Ubuntu: Incomplete Bug description: CID: 201307-13919 HP ProBook 445 G1 The microphone mute key does not work on this system Keystroke cannot be detected by xev, but it shows: keycode 465 press keycode 465 release from "sudo showkey -k" ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-30-generic 3.13.0-30.54 ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ubuntu 1508 F.... pulseaudio /dev/snd/pcmC1D0c: ubuntu 1508 F...m pulseaudio /dev/snd/controlC0: ubuntu 1508 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) CurrentDesktop: Unity Date: Fri Jun 27 01:10:10 2014 HibernationDevice: RESUME=UUID=be96939f-ffde-4407-a99e-17beebf60ad5 InstallationDate: Installed on 2014-06-27 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Hewlett-Packard HP ProBook 445 G1 Notebook PC ProcFB: 0 radeondrmfb 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic root=UUID=fd8269ec-b9ab-4f08-8eaf-6c3bfa26a4e1 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-30-generic N/A linux-backports-modules-3.13.0-30-generic N/A linux-firmware 1.127.4 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/05/2013 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68CPE Ver. F.21 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 1950 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 91.0B dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68CPEVer.F.21:bd09/05/2013:svnHewlett-Packard:pnHPProBook445G1NotebookPC:pvrA201BC1203:rvnHewlett-Packard:rn1950:rvrKBCVersion91.0B:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ProBook 445 G1 Notebook PC dmi.product.version: A201BC1203 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1334968/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp