Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have installed Fedora 17 on my laptop. A few days ago I updated my fedora (but not upgraded). I shut down my computer and since the next time I turned it on I am hearing a clicking noise all the time from speakers. Even when I plug my headphones in I hear the noise through the headphone. I surfed over the internet and found the following shell commands:

su -c 'echo "options snd_hda_intel power_save=0" > /etc/modprobe.d/snd_hda_intel.conf'
su -c 'echo 0 > /sys/module/snd_hda_intel/parameters/power_save'

I tried them but they didn't work. Here is the part of "lspci" command related to my sound-card:

00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03)

I have to add that my sound-card is working and I can play some audio file, I mean I can hear the voice and noise simultaneously. But everything is OK in windows xp which is also installed on my laptop.

Could it be related to the sound-card driver? If so, how can I revert it to the previous version?

share|improve this question
add comment

1 Answer

up vote 0 down vote accepted

I had similar problems (with a different distribution on a netbook).

What helped me was adding

options snd-hda-intel single_cmd=1

to /etc/modprobe.d/50-sound.conf.

share|improve this answer
    
Up to now it is working, I am not hearing that noise anymore. Thank you very much. I will mark your answer as accepted after I test my computer for a few days. But in the meanwhile, would you mind telling me what does that option do? –  Mehrdad Nov 10 '12 at 15:53
    
@Mehrdad: That's what I do not know :-) The documentation states: Use single immediate commands to communicate with codecs (for debugging only). I just tried it out of desperation and it worked. –  choroba Nov 10 '12 at 15:55
add comment

Your Answer

 
discard

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.