[HDA-Intel - HDA SIS966, playback] Underruns, dropouts or crackling sound

[Pedro Azevedo]

sound crackling after plug in my wireless mouse...

here is my system info ....

!!################################
!!ALSA Information Script v 0.4.60
!!################################

!!Script ran on: Mon Apr 30 14:57:49 UTC 2012

!!Linux Distribution
!!------------------

Ubuntu 12.04 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

!!DMI Information
!!---------------

Manufacturer: clevo
Product Name: M7X0SU
Product Version: Rev. A1

!!Kernel Information
!!------------------

Kernel release: 3.2.0-24-generic
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes

!!ALSA Version
!!------------

Driver version: 1.0.24
Library version: 1.0.25
Utilities version: 1.0.25

!!Loaded ALSA modules
!!-------------------

snd_hda_intel

!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes

!!Soundcards recognised by ALSA
!!-----------------------------

 0 [SIS966 ]: HDA-Intel - HDA SIS966
                      HDA SIS966 at 0xd3200000 irq 18

!!PCI Soundcards installed in the system
!!--------------------------------------

00:0f.0 Audio device: Silicon Integrated Systems [SiS] Azalia Audio Controller

!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!--------------------------------------------------------

00:0f.0 0403: 1039:7502
        Subsystem: 1558:0802

!!Modprobe options (Sound related)
!!--------------------------------

snd-atiixp-modem: index=-2
snd-intel8x0m: index=-2
snd-via82xx-modem: index=-2
snd-usb-audio: index=-2
snd-usb-caiaq: index=-2
snd-usb-ua101: index=-2
snd-usb-us122l: index=-2
snd-usb-usx2y: index=-2
snd-cmipci: mpu_port=0x330 fm_port=0x388
snd-pcsp: index=-2
snd-usb-audio: index=-2

!!Loaded sound module options
!!--------------------------

!!Module: snd_hda_intel
        align_buffer_size : Y
        bdl_pos_adj : 32,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
        beep_mode : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
        enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
        enable_msi : -1
        id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
        index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
        model : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
        patch : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
        position_fix : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
        power_save : 0
        power_save_controller : Y
        probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
        probe_only : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
        single_cmd : N
        snoop : Y

!!HDA-Intel Codec information
!!---------------------------
--startcollapse--

Codec: Realtek ALC662 rev1
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0662
Subsystem Id: 0x15580802
Revision Id: 0x100101
No Modem Function Group found
Default PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=2, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=1, dir=1, wake=0, sticky=0, data=1, unsol=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x00 0x00]
  Converter: stream=8, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x03 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Converter: stream=0, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x04 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="ALC662 rev1 Analog", type="Audio", device=0
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Converter: stream=8, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x05 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Control: name="IEC958 Default PCM Playback Switch", index=0, device=0
  Device: name="ALC662 rev1 Digital", type="SPDIF", device=1
  Converter: stream=8, channel=0
  Digital: Enabled
  Digital category: 0x0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0x1e]: 16 20 24 32
    formats [0x1]: PCM
Node 0x07 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Control: name="Capture Switch", index=0, device=0
  Control: name="Capture Volume", index=0, device=0
  Device: name="ALC662 rev1 Analog", type="Audio", device=0
  Amp-In caps: ofs=0x09, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x87 0x87]
  Converter: stream=4, channel=0
  SDI-Select: 0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0x6]: 16 20
    formats [0x1]: PCM
  Connection: 1
     0x23
Node 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Amp-In caps: ofs=0x09, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x80 0x80]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0x6]: 16 20
    formats [0x1]: PCM
  Connection: 1
     0x22
Node 0x0a [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Internal Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Internal Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Beep Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=5, ofs=0
  Control: name="Beep Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=5, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 9
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16
Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x00 0x00]
  Connection: 2
     0x02 0x0b
Node 0x0d [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x03 0x0b
Node 0x0e [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x00 0x00]
  Connection: 2
     0x04 0x0b
Node 0x0f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x14 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0001003c: IN OUT HP EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x99138110: [Fixed] Speaker at Int ATAPI
    Conn = ATAPI, Color = Purple
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0c
Node 0x15 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x00010034: IN OUT EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0d
Node 0x16 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x00000034: IN OUT Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0e
Node 0x17 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Mic Jack", index=0, device=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x00001734: IN OUT Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x01a11830: [Jack] Mic at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0x3, Sequence = 0x0
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x0e
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Internal Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x01 0x01]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000173c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x99a3893f: [Fixed] Mic at Int ATAPI
    Conn = ATAPI, Color = Purple
    DefAssociation = 0x3, Sequence = 0xf
    Misc = NO_PRESENCE
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c* 0x0e
Node 0x1a [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x00000034: IN OUT Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0d
Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Headphone Jack", index=0, device=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x00 0x00]
  Pincap 0x0000173c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x0121101f: [Jack] HP Out at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0x1, Sequence = 0xf
  Pin-ctls: 0xc0: OUT HP VREF_HIZ
  Unsolicited: tag=01, enabled=1
  Connection: 2
     0x0c 0x0e*
Node 0x1c [Pin Complex] wcaps 0x400001: Stereo
  Pincap 0x00000020: IN
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
Node 0x1d [Pin Complex] wcaps 0x400000: Mono
  Pincap 0x00000020: IN
  Pin Default 0x40158a0d: [N/A] Speaker at Ext N/A
    Conn = Optical, Color = Purple
    DefAssociation = 0x0, Sequence = 0xd
  Pin-ctls: 0x20: IN
Node 0x1e [Pin Complex] wcaps 0x400300: Mono Digital
  Pincap 0x00000010: OUT
  Pin Default 0x01441120: [Jack] SPDIF Out at Ext Rear
    Conn = RCA, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Connection: 1
     0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=12
Node 0x21 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 10
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x0b
Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x80 0x80] [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 10
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x0b
Node 0x24 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x25 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x26 [Vendor Defined Widget] wcaps 0xf00000: Mono
--endcollapse--

!!ALSA Device nodes
!!-----------------

crw-rw---T 1 root audio 116, 6 Apr 30 15:35 /dev/snd/controlC0
crw-rw---T 1 root audio 116, 5 Apr 30 15:35 /dev/snd/hwC0D0
crw-rw---T 1 root audio 116, 4 Apr 30 15:40 /dev/snd/pcmC0D0c
crw-rw---T 1 root audio 116, 3 Apr 30 15:50 /dev/snd/pcmC0D0p
crw-rw---T 1 root audio 116, 2 Apr 30 15:40 /dev/snd/pcmC0D1p
crw-rw---T 1 root audio 116, 1 Apr 30 15:35 /dev/snd/seq
crw-rw---T 1 root audio 116, 33 Apr 30 15:35 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root 60 Apr 30 15:35 .
drwxr-xr-x 3 root root 200 Apr 30 15:35 ..
lrwxrwxrwx 1 root root 12 Apr 30 15:35 pci-0000:00:0f.0 -> ../controlC0

!!Aplay/Arecord output
!!------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: SIS966 [HDA SIS966], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: SIS966 [HDA SIS966], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 0: SIS966 [HDA SIS966], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

!!Amixer output
!!-------------

!!-------Mixer controls for card 0 [SIS966]

Card hw:0 'SIS966'/'HDA SIS966 at 0xd3200000 irq 18'
  Mixer name : 'Realtek ALC662 rev1'
  Components : 'HDA:10ec0662,15580802,00100101'
  Controls : 25
  Simple ctrls : 13
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 0 [0%] [-64.00dB] [off]
  Front Right: Playback 0 [0%] [-64.00dB] [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 7 [23%] [-3.00dB] [off]
  Front Right: Capture 7 [23%] [-3.00dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Internal Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 1 [33%] [10.00dB]
  Front Right: 1 [33%] [10.00dB]

!!Alsactl output
!!-------------

--startcollapse--
state.SIS966 {
        control.1 {
                iface MIXER
                name 'Headphone Playback Volume'
                value.0 64
                value.1 64
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 64'
                        dbmin -6400
                        dbmax 0
                        dbvalue.0 0
                        dbvalue.1 0
                }
        }
        control.2 {
                iface MIXER
                name 'Headphone Playback Switch'
                value.0 true
                value.1 true
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.3 {
                iface MIXER
                name 'Speaker Playback Volume'
                value.0 0
                value.1 0
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 64'
                        dbmin -6400
                        dbmax 0
                        dbvalue.0 -6400
                        dbvalue.1 -6400
                }
        }
        control.4 {
                iface MIXER
                name 'Speaker Playback Switch'
                value.0 false
                value.1 false
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.5 {
                iface MIXER
                name 'Mic Playback Volume'
                value.0 0
                value.1 0
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 31'
                        dbmin -3450
                        dbmax 1200
                        dbvalue.0 -3450
                        dbvalue.1 -3450
                }
        }
        control.6 {
                iface MIXER
                name 'Mic Playback Switch'
                value.0 false
                value.1 false
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.7 {
                iface MIXER
                name 'Internal Mic Playback Volume'
                value.0 0
                value.1 0
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 31'
                        dbmin -3450
                        dbmax 1200
                        dbvalue.0 -3450
                        dbvalue.1 -3450
                }
        }
        control.8 {
                iface MIXER
                name 'Internal Mic Playback Switch'
                value.0 false
                value.1 false
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.9 {
                iface MIXER
                name 'Auto-Mute Mode'
                value Enabled
                comment {
                        access 'read write'
                        type ENUMERATED
                        count 1
                        item.0 Disabled
                        item.1 Enabled
                }
        }
        control.10 {
                iface MIXER
                name 'Mic Boost Volume'
                value.0 0
                value.1 0
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 3'
                        dbmin 0
                        dbmax 3000
                        dbvalue.0 0
                        dbvalue.1 0
                }
        }
        control.11 {
                iface MIXER
                name 'Internal Mic Boost Volume'
                value.0 1
                value.1 1
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 3'
                        dbmin 0
                        dbmax 3000
                        dbvalue.0 1000
                        dbvalue.1 1000
                }
        }
        control.12 {
                iface MIXER
                name 'Capture Switch'
                value.0 false
                value.1 false
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.13 {
                iface MIXER
                name 'Capture Volume'
                value.0 7
                value.1 7
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 31'
                        dbmin -1350
                        dbmax 3300
                        dbvalue.0 -300
                        dbvalue.1 -300
                }
        }
        control.14 {
                iface MIXER
                name 'IEC958 Playback Con Mask'
                value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
                comment {
                        access read
                        type IEC958
                        count 1
                }
        }
        control.15 {
                iface MIXER
                name 'IEC958 Playback Pro Mask'
                value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
                comment {
                        access read
                        type IEC958
                        count 1
                }
        }
        control.16 {
                iface MIXER
                name 'IEC958 Playback Default'
                value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
                comment {
                        access 'read write'
                        type IEC958
                        count 1
                }
        }
        control.17 {
                iface MIXER
                name 'IEC958 Playback Switch'
                value true
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 1
                }
        }
        control.18 {
                iface MIXER
                name 'IEC958 Default PCM Playback Switch'
                value true
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 1
                }
        }
        control.19 {
                iface MIXER
                name 'Beep Playback Volume'
                value.0 0
                value.1 0
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 31'
                        dbmin -3450
                        dbmax 1200
                        dbvalue.0 -3450
                        dbvalue.1 -3450
                }
        }
        control.20 {
                iface MIXER
                name 'Beep Playback Switch'
                value.0 false
                value.1 false
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 2
                }
        }
        control.21 {
                iface MIXER
                name 'Master Playback Volume'
                value 64
                comment {
                        access 'read write'
                        type INTEGER
                        count 1
                        range '0 - 64'
                        dbmin -6400
                        dbmax 0
                        dbvalue.0 0
                }
        }
        control.22 {
                iface MIXER
                name 'Master Playback Switch'
                value true
                comment {
                        access 'read write'
                        type BOOLEAN
                        count 1
                }
        }
        control.23 {
                iface CARD
                name 'Headphone Jack'
                value true
                comment {
                        access read
                        type BOOLEAN
                        count 1
                }
        }
        control.24 {
                iface CARD
                name 'Mic Jack'
                value false
                comment {
                        access read
                        type BOOLEAN
                        count 1
                }
        }
        control.25 {
                iface MIXER
                name 'PCM Playback Volume'
                value.0 255
                value.1 255
                comment {
                        access 'read write user'
                        type INTEGER
                        count 2
                        range '0 - 255'
                        tlv '0000000100000008ffffec1400000014'
                        dbmin -5100
                        dbmax 0
                        dbvalue.0 0
                        dbvalue.1 0
                }
        }
}
--endcollapse--

!!All Loaded Modules
!!------------------

Module
nls_iso8859_1
nls_cp437
vfat
fat
uas
usb_storage
rfcomm
parport_pc
ppdev
bnep
bluetooth
vesafb
nvidia
arc4
snd_hda_codec_realtek
snd_hda_intel
snd_hda_codec
snd_hwdep
snd_pcm
snd_seq_midi
snd_rawmidi
snd_seq_midi_event
snd_seq
snd_timer
snd_seq_device
rt2800usb
rt2800lib
crc_ccitt
rt2x00usb
psmouse
snd
rt2x00lib
serio_raw
mac80211
soundcore
snd_page_alloc
cfg80211
joydev
video
wmi
mac_hid
sis_agp
lp
parport
usbhid
hid
sis190
sdhci_pci
sdhci

!!Sysfs Files
!!-----------

/sys/class/sound/hwC0D0/init_pin_configs:
0x14 0x99138110
0x15 0x411111f0
0x16 0x411111f0
0x18 0x01a11830
0x19 0x99a3893f
0x1a 0x411111f0
0x1b 0x0121101f
0x1c 0x411111f0
0x1d 0x40158a0d
0x1e 0x01441120

/sys/class/sound/hwC0D0/driver_pin_configs:

/sys/class/sound/hwC0D0/user_pin_configs:

/sys/class/sound/hwC0D0/init_verbs:

!!ALSA/HDA dmesg
!!------------------

[ 17.116142] usb 1-6: reset high-speed USB device number 3 using ehci_hcd
[ 17.181488] snd_hda_intel 0000:00:0f.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 17.181556] snd_hda_intel 0000:00:0f.0: setting latency timer to 64
[ 17.259856] input: HDA SIS966 Mic as /devices/pci0000:00/0000:00:0f.0/sound/card0/input9
[ 17.264769] input: HDA SIS966 Headphone as /devices/pci0000:00/0000:00:0f.0/sound/card0/input10
[ 17.313716] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule:

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SIS966 [HDA SIS966], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pedro 10111 F.... pulseaudio
 /dev/snd/pcmC0D0p: pedro 10111 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'SIS966'/'HDA SIS966 at 0xd3200000 irq 18'
   Mixer name : 'Realtek ALC662 rev1'
   Components : 'HDA:10ec0662,15580802,00100101'
   Controls : 25
   Simple ctrls : 13
Date: Mon Apr 30 16:01:23 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt:pt_BR:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=pt_PT.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SIS966 failed
Symptom_Card: Áudio embutido - HDA SIS966
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [HDA-Intel - HDA SIS966, playback] Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/04/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.asset.tag: 1234567890
dmi.board.name: M7X0SU
dmi.board.vendor: clevo
dmi.board.version: Bottom
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: SiS
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd05/04/2009:svnclevo:pnM7X0SU:pvrRev.A1:rvnclevo:rnM7X0SU:rvrBottom:cvnSiS:ct1:cvrN/A:
dmi.product.name: M7X0SU
dmi.product.version: Rev. A1
dmi.sys.vendor: clevo

[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.]