Ask Ubuntu is a question and answer site for Ubuntu users and developers. 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 have a Alienware m17xR4 and when I reboot from Windows 7 into 12.04 I have no sound. The icon is there and all of the listed devices are still present just no sound. If I reboot in 12.04 back into 12.04 it stops working. If I reboot from 12.04 to Windows 7 the sound works fine in Windows. The only way to fix the problem with the sound in 12.04 in to shut the computer down for 15 seconds then start it again.

share|improve this question

You should try to install the lastest drivers for your devices. If you didn't do it yet, follow the next steps:

  • Click on the Dash
  • Search for Additional and click Additional Drivers
  • Wait a bit, and you'll see a list with all the compatible drivers for your computer. You can install your graphics card drivers (I usually install the post-release drivers) and all your other devices.
  • Check if your soundcard name appears at that list, select the entry for it and click Activate. After a while, you'll have to restart your computer.

I hope it works to you, and tell us soon if it worked OK!

share|improve this answer
Unfortunately, the Additional Drivers says that there are no proprietary drivers in use on this system. That is all that is displayed in the window except close help and a grayed out enable. – user58927 Sep 16 '12 at 22:11

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.