[KDE] oSS 13.1 Thinkpad x30 series micmute button configuration

English Hardware
#1

If you try to assign micmute button through KDE shortcut settings and experience this message when assigning the button:

The key you just pressed is not supported by Qt.

fix it by editing keyboard udev file:

:~> sudo vi /lib/udev/hwdb.d/60-keyboard.hwdb

find:

###########################################################
# Lenovo
###########################################################

# thinkpad_acpi driver
keyboard:name:ThinkPad Extra Buttons:dmi:bvn*:bvr*:bd*:svnLENOVO*:pn*

 **KEYBOARD_KEY_1a=f20**

#

and replace with:

###########################################################
# Lenovo
###########################################################

# thinkpad_acpi driver
keyboard:name:ThinkPad Extra Buttons:dmi:bvn*:bvr*:bd*:svnLENOVO*:pn*

 **KEYBOARD_KEY_1a=prog2**

#

then run:

:~> sudo udevadm hwdb --update

and re-login/restart for kde to pick up the change.

NOTE: starting with kernel 3.13 micmute led works without patching thinkpad_acpi.