Bug 620248

Summary: Sound problems with Intel HDA ICH8 (snd_hda_intel codec ALC286)
Product: [Fedora] Fedora Reporter: Miguel Angel Perez <mangelp>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: low    
Version: 13CC: anton, dougsland, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-12-09 09:06:09 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
output of pulseaudio -vvvvv
none
More output of pulseaudio -vvvvv
none
Console output of aplay without pulseaudio
none
Console output of aplay with pulseaudio enabled
none
alsa-info output
none
Output of lsmod | grep snd_
none
Output of aplay -L none

Description Miguel Angel Perez 2010-08-01 18:37:59 UTC 
Description of problem:

With fedora 12 sound worked fine, but afer doing a clean installation of fedora 13 the sound seems to randomly stop for a few milliseconds and then the sound continues, some times there are some "clicks" and a small part of the skipped sound is played at the same time it plays the next part. I've been following instrucctions found in https://fedoraproject.org/wiki/How_to_debug_PulseAudio_problems but nothing seems to work for me.

This behaviour seems to be a bit fuzzy as some days I can use sound as I always did with fedora 12 but other days I cannot use any app that outputs sound, as each time the sound stops the application seems to freeze, so any of those apps are unusable for me (flash-based apps, music players, video players, etc).

I've tried to check if this is a sound driver problem listing devices with aplay -L and using front instead of Default and it seemed it was.

Version-Release number of selected component (if applicable):

"uname -a" output:
   Linux hyperion.lan 2.6.33.6-147.fc13.i686.PAE #1 SMP Tue Jul 6 22:24:44 UTC 2010 i686 i686 i386 GNU/Linux

This is an up-to-date fedora 13 setup.

How reproducible:


Steps to Reproduce:
1. You need my laptop
2. Use an app that produces some kind of sound output
3. Listen to sound stopping and getting back all the time (irregular timming).
  
Actual results:
I can't listen sound properly. Even some apps hangs while playing sound under too much stop-continue weirdness.

Expected results:
I can listen music, whatch videos in youtube and play games without sluggish sound.

Additional info:

I've collected as much information as I can.

The output of "lspci | grep -i audio" is:
   00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)

The output of "cat /etc/proc/asound/pcm" is:
  00-00: ALC268 Analog : ALC268 Analog : playback 1 : capture 1
  00-06: Si3054 Modem : Si3054 Modem : playback 1 : capture 1

I've also got some output of pulseaudio -vvvvv and aplay that shows a lot of underruns. These along with alsainfo output are added as attachements.
Comment 1 Miguel Angel Perez 2010-08-01 18:38:44 UTC 
Created attachment 435901 [details]
output of pulseaudio -vvvvv
Comment 2 Miguel Angel Perez 2010-08-01 18:40:10 UTC 
Created attachment 435902 [details]
More output of pulseaudio -vvvvv
Comment 3 Miguel Angel Perez 2010-08-01 18:41:00 UTC 
Created attachment 435903 [details]
Console output of aplay without pulseaudio
Comment 4 Miguel Angel Perez 2010-08-01 18:42:18 UTC 
Created attachment 435904 [details]
Console output of aplay with pulseaudio enabled
Comment 5 Miguel Angel Perez 2010-08-01 18:45:16 UTC 
Created attachment 435905 [details]
alsa-info output
Comment 6 Miguel Angel Perez 2010-08-01 18:47:10 UTC 
Created attachment 435906 [details]
Output of lsmod | grep snd_
Comment 7 Miguel Angel Perez 2010-08-01 18:47:57 UTC 
Created attachment 435907 [details]
Output of aplay -L
Comment 8 Miguel Angel Perez 2010-08-04 10:45:38 UTC 
Latest kernel update doesn't solve it.

current "uname -a" output:

  Linux hyperion.lan 2.6.33.6-147.2.4.fc13.i686.PAE #1 SMP Fri Jul 23 17:21:06 UTC 2010 i686 i686 i386 GNU/Linux
Comment 9 Miguel Angel Perez 2010-09-01 09:17:55 UTC 
Latest kernel update (2.6.34.6-47) doesn't solve it. Any app with sound is almost unusable.
Comment 10 Miguel Angel Perez 2010-10-30 08:52:00 UTC 
Hello. I'm still here with this issue with latest kernel update 2.6.34.7-61 (PAE).

But I've found one interesting thing. When the sound gets crazy if I start up a process that will try to use 100% cpu (my laptom is a dual core cpu) the sound starts to work as spected.

This makes me think that I might be wrong about the alsa driver being guilty of this nuissance. But I tried common pulseaudio troubleshotting instructions and nothing seemed to work, so now I'm not sure of what to do next.
Comment 11 Miguel Angel Perez 2010-12-09 09:07:48 UTC 
I've closed it as with Fedora 14 things seems to work a bit better (sound is almost usable but with glitches) and I'm not sure if this is a driver or pulseaudio thing.