[Realtek ALC880] Playback problem (crackling while moving window)

[nikhov]

While music is played (or whatever is playing, but is more noticeable when it's music), if I move windows, maximize, change between desktops etc, the music slows down for some miliseconds and I hear crackling and noisy pops.

$ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic-pae 2.6.35.4
Uname: Linux 2.6.35-22-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: nikhov 2339 F.... pulseaudio
 /dev/snd/pcmC0D0p: nikhov 2339 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfc500000 irq 47'
   Mixer name : 'Realtek ALC880'
   Components : 'HDA:10ec0880,00001854,00100800 HDA:11c13026,11c13026,00100700'
   Controls : 37
   Simple ctrls : 22
Date: Wed Oct 13 12:42:04 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=es_ES.utf8
 SHELL=/bin/bash
SelectedCard: 0 Intel HDA-Intel - HDA Intel
SourcePackage: alsa-driver
Symptom: audio
Title: [Realtek ALC880] Playback problem
dmi.bios.date: 09/19/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: RKYWSF33
dmi.board.name: ROCKY
dmi.board.vendor: LG Electronics
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LG Electronics
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrRKYWSF33:bd09/19/2007:svnLGElectronics:pnP1-J828B:pvrNotApplicable:rvnLGElectronics:rnROCKY:rvrNotApplicable:cvnLGElectronics:ct10:cvrN/A:
dmi.product.name: P1-J828B
dmi.product.version: Not Applicable
dmi.sys.vendor: LG Electronics

[Daniel T Chen (crimsun)]

Sorry for the delay in responding. Would you please follow https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules?

[nikhov (nikhov)]

Hi, thanks for your attention.
I've followed the instructions in the wiki.
After reboot it seems to be ok, but after some minutes of using the computer the same problem appears.

Nikhov

[Daniel T Chen (crimsun)]

Please follow https://wiki.ubuntu.com/Audio/AlsaInfo.

[nikhov (nikhov)]

Here is the output of the alsa-info.sh script.

[Daniel T Chen (crimsun)]

Why are you using the model=lg quirk? Can you remove it, reboot, and reproduce the symptom reported above?

[nikhov (nikhov)]

I added the model=lg line to alsa-base.conf some time ago (I think when I installed ubuntu 6.10 on 2006, but I'm not sure). If I don't use it the built-in speakers and the mics (both the built-in and external) dont work.

Anyway, I've tried removing that option and rebooting, and the problem persists.

[Daniel T Chen (crimsun)]

Ok, so there are two bugs being reported here:

1) Your machine needs a model quirk applied. Please file a separate bug so we can get that fix pushed upstream. Just to clarify, do all playback and capture work properly (aside from crackling, etc.) with that quirk? I.e., inserting headphones mutes internal speakers; inserting external mic mutes internal mic

2) The symptom you reported in this bug report

[nikhov (nikhov)]

1) Everything works as expected when I use the "model=lg" option, except one thing: I have to "reselect" the mic (click on other mic, or in Line-In, and then on the Mic again) in the mixer on every reboot in order to have it working. If I don't do this, the mic doesn't work.
Related to that, I've found this bug:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/595482
I think it's the same problem (i've posted a comment on it) . Should I file another bug?

2) The problem of the pops, crackling and music slow-down didn't happen before ubuntu 10.10 (perhaps before 10.04, I'm not sure.. sorry, I should have filed the bug before).
It happens with the "model=lg" quirk and without it.
If that helps, I have tried to bootup with an ubuntu 10.10 live cd, and the problem is reproduced.

[Daniel T Chen (crimsun)]

Great, thanks. I've read your comment in the other bug, and it's fine not to file a new bug. (In most cases we [the development team] will simply mark them duplicates.) Please be sure to attach output from following https://wiki.ubuntu.com/Audio/AlsaInfo as requested in the other bug.

[Daniel T Chen (crimsun)]

As for the need to reselect the mic, it's probably due to pulse, but we need your AlsaInfo output first.

[nikhov (nikhov)]

Any news on what could be the problem?
Do you want me to test something else on my system?

Thanks for your attention.

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]