Resolve nosound problem on Ubuntu 9.10 karmic koala and ubuntu 10.04 Lucid Lynx


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You installed Ubuntu 9.10 karmic koala or Ubuntu 10.04 Lucid Lynx and you tried to listen the music online or play music cd but you got nosound ????

Answer : Here are some of solutions that can help you resolve this issue. Please follow the steps bellow :

Before to start check first Your sound just might be muted. See alsamixer

Go to System –>Preferences–>Sound and check outputvolume if muted or not, if not muted then go further with the steps bellow , if was muted ( In my case when i installed karmic koala) then is resolved just you have to unchek mute.


First, make sure that slmodemd is not running. with this command

 pgrep slmodemd

if the package installed remove with :

sudo apt-get remove sl-modem-daemon

restart your computer then go to System>Administration> Softwaresources>

In the Updates tab active “Unsupported Updates (karmic-backports), The reason from this is to install ALSA modules backports.

  • Now for ubuntu 9.10 karmic koala:
sudo apt-get install linux-backports-modules-alsa-karmic-generic


  • For Ubuntu 10.04 Lucid Lynx :
sudo apt-get install linux-backports-modules-alsa-lucid-generic

After you installed the backport module above for karmic or Lucid add the PPA of Ubuntu Development Team Audio and update to download and install their version of ALSA and PulseAudio packages.

sudo add-apt-repository ppa:ubuntu-audio-dev
 sudo apt-get update  
 sudo apt-get dist-upgrade

Now reboot and enjoy. for any question please post it in The forum

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