[Pkg-acpi-devel] Bug#738611: acpid: Mic mute button not recognized on Thinkpad again

Lingzhu Xiang xianglingzhu at gmail.com
Wed Feb 12 03:21:16 UTC 2014

On Tue, Feb 11, 2014 at 7:15 AM, Ted Felix <ted at tedfelix.com> wrote:
>   F20 can be added to the event table (evtab) in acpid's input_layer.c.  It
> can be set up to return button/f20.  Would this solve the problem for you?
> /* F20 is used for micmute */
> {{{0,0}, EV_KEY, KEY_F20, 1}, "button/f20 F20 00000080 00000000"},

Dear Ted,

I would suggest translating F20 backto MICMUTE. Freedesktop people
found nobody is using F20 so they decided to use F20 to work around
Xorg limit, and to translate F20 back to XF86AudioMicMute for apps
above X, which probably do not handle ACPI events directly.


For apps below X, button/micmute ACPI events would make more sense.


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