Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

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'm using Fedora 16 - sound works fine.

I've tried to execute Pocketsphinx for some tests with voice recognition, but it depends on OSS to work. It crashes with the message:

ad_oss.c(103): Failed to open audio device(/dev/dsp): No such file or directory

I have ALSA-OSS installed but im getting the same error.

share|improve this question
What's the output of lsmod | grep snd_seq_oss? If there's no output, try doing modprobe snd_seq_oss. – Free Bullets Nov 5 '12 at 2:24
I tried with lsmod | grep snd_seq_oss but there's no output. And i tried with modprobe snd_seq_oss and there's no output too. What is happening? – user170179 Nov 5 '12 at 2:31
Please add any additional information to your question by editing it, instead of posting new "answers". This is not a discussion forum. – Daniel Beck Nov 5 '12 at 7:47

For /dev/dsp to work, the actual sound driver must be loaded (check index 0 in /proc/asound/cards), and the snd-pcm-oss module must be loaded.

share|improve this answer

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.