lubuntu - Sound card detected but no sound

Posted by CookieMonster on Ask Ubuntu See other posts from Ask Ubuntu or by CookieMonster
Published on 2013-10-18T03:13:21Z Indexed on 2013/10/18 4:12 UTC
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lubuntu

I installed Lubuntu 12.10 on my old laptop (Sharp Mebius PC-MR80J), but sound does not work. Here are things I tried.

aplay -l does not output anything.
When I run alsamixer, I see only one bar that says "Beep".
I installed pavucontrol, pulseaudio, pulseaudio-utils and libgtk-3-0 and checked output devices, but I only see "Dummy ouput" and there is no hardware output devices.

cat /proc/asound/cards returns the following.

0 [Intel          ]: HDA-Intel - HDA Intel
          HDA Intel at 0xfeb38000 irq 40

cat /proc/asound/devices outputs the following.

1:        : sequencer
2: [ 0- 1]: hardware dependent
3: [ 0- 0]: hardware dependent
4: [ 0]   : control
33:        : timer

The laptop was running Windows XP before and sound (both input and outpu) was working. What can I do now?

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