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I have installed Ubuntu 12 and i cant see any volume control; no audio player can detect any sound card and nothing shown on the System Settings -> Sound -> Output tab.

However, I can see my hardware by typing this command :

aplay -l

Output:

**** List of PLAYBACK Hardware Devices **** 
card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
  Subdevices: 1/1   
  Subdevice #0: subdevice #0
card 1: U0x4d90x20 [USB Device 0x4d9:0x20], device 0: USB Audio [USB Audio]   
  Subdevices: 1/1   
  Subdevice #0: subdevice #0
card 2: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1   
  Subdevice #0: subdevice #0

How can I activate sound ?

Edit:

This info may help for the solution :

lspci | grep Audio 

00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
04:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cedar HDMI Audio [Radeon HD 5400/6300 Series]
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Can you provide more information about your Hardware? What Kind of USB sound device do you use? –  falstaff Dec 17 '12 at 9:42
    
Please also post the output of lspci -vvv –  falstaff Dec 17 '12 at 9:42
    
lspci -vvv output is more than one hundred line and sound device is a kind USB that stick to a speaker and One witch in the kvm switch and the one who is in the mainbord . –  user115153 Dec 17 '12 at 10:05
    
OK, try this, edit your question and add the output of this command: sudo lspci | grep Audio –  fabricator4 Dec 17 '12 at 10:52
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1 Answer 1

Which one do you like to use?

Try using your Intel Soundcard directly through ALSA:

aplay -L
....
plughw:CARD=Intel,DEV=1
HDA Intel, AD198x Digital
Hardware device with all software conversions
...

Lookup your device name and use it as -D argument in speaker-test.

speaker-test -Dplughw:CARD=Intel,DEV=1 -c 2

The Radeon HDMI Audio support is still experimental. You can try using it by editing /etc/default/grub and add radeon.audio=1 to GRUB_CMDLINE_LINUX_DEFAULT. Execute update-grup afterwards and reboot.

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I prefer to use USB device and i get result from speaker-test but do you think it is good idea to put it in the grub , why it was working before ,that is what i carius about and where these driver load up ? –  user115153 Dec 17 '12 at 15:46
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