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I'm using a Lenovo SL500 for several years now and suddenly the Volume keys stopped working. It could be that a kernel updated caused it - I don't know.

However when I go to the keyboard settings -> Shortcuts -> Sound and Media, I can set e.g. Volume Mute with my multimedia key and then it says "AudioMute". But when I later hit the Volume Mute key nothing happens.

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3 Answers 3

Reset to default
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I found a solution: deleting ~/.pulse then logout. Next time it happens I will try the other answer too.

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    This has fixed my problem, but you must reboot the computer, not just logout, or you may find all the sound controls to be quite broken. I recommending taking a backup of .pulse incase you need to revert.
    – Steve
    May 30, 2014 at 8:40
  • This is the right answer, helped me too.
    – Piotr Jurkiewicz
    Sep 20, 2014 at 0:40
  • Deleted folder and rebooted. This helped in my case as well (Asus N55S). It restored the sound previously gone from the left headphone channel and the volume and mute keys. Thanks!
    – Andrea Borga
    Dec 2, 2014 at 22:03
  • I just killed pulse-audio instead of logging out, it worked
    – vanjoe
    May 5, 2015 at 20:33
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I had the same issue on 15.04

There was no .pulse but there was .pulse-cookie. So I deleted it and it works like a charm now.

So updated solution for 15.04:

sudo rm ~/.pulse-cookie
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  • This also works on ubuntu 12.04. Thank you so much!
    – laughing_man
    Aug 1, 2016 at 2:59
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Resetting media key prefrences worked for me

dconf reset -f /org/gnome/settings- daemon/plugins/media-keys/

if it does not work maybe you should try

dconf reset -f /org/gnome/settings- daemon/plugins
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