Dear Folks,

On this P4 machine running FC5, I had great sound from this Audigy2 ZS
soundcard until a few months ago, when a constant popping/crackling
sound appeared, even when no sound source is playing.

I have not found any ideas on how to solve this yet, and would be very
grateful for any suggestions.

I have run the script aadebug, from http://alsa.opensrc.org/aadebug,
and show the output here:

$ aadebug
ALSA Audio Debug v0.1.0 - Wed Jun 28 06:46:19 EST 2006
http://alsa.opensrc.org/index.php?page=aadebug
http://www.gnu.org/licenses/gpl.txt

Kernel ----------------------------------------------------
Linux nicku.org 2.6.17-1.2139_FC5smp #1 SMP Fri Jun 23 13:12:06 EDT 2006 i686 
i686 i386 GNU/Linux

Loaded Modules --------------------------------------------
snd_seq_midi           12865  0
snd_emu10k1_synth      11713  0
snd_emux_synth         39233  1 snd_emu10k1_synth
snd_seq_virmidi        11969  1 snd_emux_synth
snd_seq_midi_emul      10433  1 snd_emux_synth
snd_emu10k1           121925  5 snd_emu10k1_synth
snd_rawmidi            29761  3 snd_seq_midi,snd_seq_virmidi,snd_emu10k1
snd_ac97_codec         96225  1 snd_emu10k1
snd_ac97_bus            6593  1 snd_ac97_codec
snd_seq_dummy           8133  0
snd_seq_oss            37185  0
snd_seq_midi_event     11841  3 snd_seq_midi,snd_seq_virmidi,snd_seq_oss
snd_seq                59441  9 
snd_seq_midi,snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss            43985  0
snd_mixer_oss          21825  2 snd_pcm_oss
snd_pcm                88005  3 snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_seq_device         13005  8 
snd_seq_midi,snd_emu10k1_synth,snd_emux_synth,snd_emu10k1,snd_rawmidi,snd_seq_dummy,snd_seq_oss,snd_seq
snd_timer              28613  3 snd_emu10k1,snd_seq,snd_pcm
snd_page_alloc         14665  2 snd_emu10k1,snd_pcm
snd_util_mem            9537  2 snd_emux_synth,snd_emu10k1
snd_hwdep              14149  2 snd_emux_synth,snd_emu10k1
snd                    59973  19 
snd_emux_synth,snd_seq_virmidi,snd_emu10k1,snd_rawmidi,snd_ac97_codec,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_device,snd_timer,snd_hwdep

Modprobe Conf ---------------------------------------------
# alias char-major-116-* snd
# alias snd-card-0 sound-card-0
# alias char-major-14-* soundcore
# alias sound-service-0-0 snd-mixer-oss
# alias sound-service-0-1 snd-seq-oss
# alias sound-service-0-3 snd-pcm-oss
# alias sound-service-0-8 snd-seq-oss
# alias sound-service-0-12 snd-pcm-oss
# options snd major=116 cards_limit=1 device_mode=0666
# options snd-intel8x0 index=0
# install sound-slot-0 /sbin/modprobe --first-time --ignore-install sound-slot-0 && { 
/bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :; }
# remove sound-slot-0 { /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 
|| :; } ; /sbin/modprobe -r --first-time --ignore-remove sound-slot-0
#alias snd-card-0 snd-emu10k1
#alias sound-slot-0 snd-intel8x0
 alias char-major-116 snd
alias snd-card-0 snd-card-0
#options snd major=116 cards_limit=1
#options snd-intel8x0 index=0
 alias char-major-14 soundcore
 alias sound-service-0-0 snd-mixer-oss
 alias sound-service-0-1 snd-seq-oss
 alias sound-service-0-3 snd-pcm-oss
 alias sound-service-0-8 snd-seq-oss
 alias sound-service-0-12 snd-pcm-oss
 alias sound-service-1-0 snd-mixer-oss
#  alias sound-service-1-1 snd-seq-oss
 alias sound-service-1-3 snd-pcm-oss
#  alias sound-service-1-8 snd-seq-oss
 alias sound-service-1-12 snd-pcm-oss
# 
http://www.alsa-project.org/alsa-doc/doc-php/template.php?company=Creative+Labs&card=Sound+Blaster+Audigy2+ZS+Value.&chip=emu10k2%2C+P17&module=emu10k1#
 The alias for snd-seq-oss is not necessary on the second device,
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && /usr/sbin/alsactl 
restore >/dev/null 2>&1 || :
remove snd-emu10k1 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; 
/sbin/modprobe -r --ignore-remove snd-emu10k1
# install snd-intel8x0 /sbin/modprobe --ignore-install snd-intel8x0 && /usr/sbin/alsactl 
restore >/dev/null 2>&1 || :
#alias char-major-81 snd-bt87x
options snd-intel8x0 index=1
remove snd-intel8x0 { /usr/sbin/alsactl store 1 >/dev/null 2>&1 || : ; }; 
/sbin/modprobe -r --ignore-remove snd-intel8x0

Proc Asound -----------------------------------------------
Advanced Linux Sound Architecture Driver Version 1.0.11rc4 (Wed Mar 22 10:27:24 
2006 UTC).
0 [Audigy2        ]: Audigy2 - Audigy 2 ZS [SB0350]
                     Audigy 2 ZS [SB0350] (rev.4, serial:0x20021102) at 0xde80, 
irq 177
 2:        : timer
 3:        : sequencer
 4: [ 0- 0]: hardware dependent
 5: [ 0- 1]: raw midi
 6: [ 0- 0]: raw midi
 7: [ 0- 4]: digital audio playback
 8: [ 0- 4]: digital audio capture
 9: [ 0- 3]: digital audio playback
10: [ 0- 2]: digital audio playback
11: [ 0- 2]: digital audio capture
12: [ 0- 1]: digital audio capture
13: [ 0- 0]: digital audio playback
14: [ 0- 0]: digital audio capture
15: [ 0]   : control
16: [ 0- 2]: hardware dependent
17: [ 0- 2]: raw midi
18: [ 0- 3]: raw midi
00-00: EMU10K1 (FX8010)
00-02: Emux WaveTable
00-04: p16v : p16v : playback 1 : capture 1
00-03: emu10k1 : Multichannel Playback : playback 1
00-02: emu10k1 efx : Multichannel Capture/PT Playback : playback 8 : capture 1
00-01: emu10k1 mic : Mic Capture : capture 1
00-00: emu10k1 : ADC Capture/Standard PCM Playback : playback 32 : capture 1
Client info
 cur  clients : 5
 peak clients : 5
 max  clients : 192

Client   0 : "System" [Kernel]
 Port   0 : "Timer" (Rwe-)
 Port   1 : "Announce" (R-e-)
   Connecting To: 15:0
Client  14 : "Midi Through" [Kernel]
 Port   0 : "Midi Through Port-0" (RWe-)
Client  15 : "OSS sequencer" [Kernel]
 Port   0 : "Receiver" (-we-)
   Connected From: 0:1
Client  16 : "Audigy MPU-401 #2" [Kernel]
 Port   0 : "Audigy MPU-401 (UART)" (RWeX)
 Port  32 : "Audigy MPU-401 #2" (RWeX)
Client  17 : "Emu10k1 WaveTable" [Kernel]
 Port   0 : "Emu10k1 Port 0" (-We-)
 Port   1 : "Emu10k1 Port 1" (-We-)
 Port   2 : "Emu10k1 Port 2" (-We-)
 Port   3 : "Emu10k1 Port 3" (-We-)

Dev Snd ---------------------------------------------------
controlC0  hwC0D2    midiC0D1  midiC0D3  pcmC0D0p  pcmC0D2c  pcmC0D3p  pcmC0D4p 
 timer
hwC0D0     midiC0D0  midiC0D2  pcmC0D0c  pcmC0D1c  pcmC0D2p  pcmC0D4c  seq

CPU -------------------------------------------------------
model name      : Intel(R) Pentium(R) 4 CPU 3.00GHz
cpu MHz         : 2999.004
model name      : Intel(R) Pentium(R) 4 CPU 3.00GHz
cpu MHz         : 2999.004

RAM -------------------------------------------------------
MemTotal:      2070376 kB
SwapTotal:     3919840 kB

Hardware --------------------------------------------------
00:00.0 Host bridge: Intel Corporation 82875P/E7210 Memory Controller Hub (rev 
02)
03:0b.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture 
(rev 11)
03:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 
11)
03:0c.0 Multimedia video controller: Internext Compression Inc iTVC15 MPEG-2 
Encoder (rev 01)
03:0d.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04)
--
Nick Urbanik   RHCE         http://nicku.org        [EMAIL PROTECTED]
GPG: 7FFA CDC7+5A77 0558 DC7A 790A 16DF EC5B BB9D 2C24 ID: BB9D2C24

Attachment: pgpbOMoGS4BRs.pgp
Description: PGP signature

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