Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using Lubuntu 11.10 (original, not Ubuntu + LXDE) on a Vaio VPCEG series. After install of some network manager, my key Fn+F2 got a different function.

It's printed on it the blue symbol for MUTE. Well, it was working.

Now, if the sound is ON and I press Fn+F2, the sound will be muted and the icon on the bar is changed.

But I am not able to UNMUTE. If I press again, nothing happens.

Below is the result from xev. Helps are welcome. Thanks.

KeyRelease event, serial 41, synthetic NO, window 0x1a00001,
root 0xb7, subw 0x0, time 2129709, (-432,-17), root:(667,296),
state 0x0, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES,
XLookupString gives 0 bytes: 
XFilterEvent returns: False
share|improve this question

I fixed this problem (posted by me) re-installing the alsa-utils. I don't know if this is the solution, but it works for me.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.