I have this problem as well with the newest 14.04 daily build.
Laptop:
Lenovo T410
OS:
Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
Codename: trusty
Kernel:
3.13.0-19-generic #40-Ubuntu SMP Mon Mar 24 02:36:06 UTC 2014 x86_64 x86_64
x86_64 GNU/Linux
-> acpi_listen gives NO output if I press mic mute
-> xev gives:
KeyPress event, serial 38, synthetic NO, window 0x3e00001,
root 0x84, subw 0x0, time 1702753, (-362,419), root:(360,471),
state 0x10, keycode 156 (keysym 0x1008ff41, XF86Launch1), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 38, synthetic NO, window 0x3e00001,
root 0x84, subw 0x0, time 1702753, (-362,419), root:(360,471),
state 0x10, keycode 156 (keysym 0x1008ff41, XF86Launch1), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
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https://bugs.launchpad.net/bugs/1268880
Title:
unable to toggle microphone mute on T410 / unable to unload
thinkpad_acpi module
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