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Re: Audio snap, crackle, and pop



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 02/28/2009 12:08 PM, Paulo Cavalcanti wrote:
> 
> 
> On Sat, Feb 28, 2009 at 2:17 PM, Steven Stern
> <subscribed-lists sterndata com <mailto:subscribed-lists sterndata com>>
> wrote:
> 
> On 02/28/2009 11:10 AM, Paulo Cavalcanti wrote:
> 
> 
>> On Sat, Feb 28, 2009 at 2:00 PM, Kanwar Ranbir Sandhu
>> <m3freak thesandhufamily ca <mailto:m3freak thesandhufamily ca>
> <mailto:m3freak thesandhufamily ca
> <mailto:m3freak thesandhufamily ca>>> wrote:
> 
>>     On Sat, 2009-02-28 at 10:31 -0600, Steven Stern wrote:
>>     > Since the last bunch of updates to F10, music played on my
> pc now
>>     does a
>>     > good imitation of old, scratchy vinyl.  There are snaps and
> pops.
>>     >
>>     > Sound card:
>>     > - -- Multimedia audio controller: Creative Labs CA0106
> Soundblaster
> 
>>     I'm seeing the same with my P5Q-E on board sound, and the on
> board sound
>>     on my HP nx7400 laptop (I don't have the sound card specs for
> that one).
> 
>>     Rather annoying, it is!
> 
> 
>> Can you run
> 
>> /usr/bin/alsa-info.sh --no-upload
> 
>> and post the result here?
> 
>> You need to have alsa-utils installed.
> 
>> Thanks.
> 
>> --
>> Paulo Roma Cavalcanti
>> LCG - UFRJ
> 
> upload=true&script=true&cardinfo=
> !!################################
> !!ALSA Information Script v 0.4.52
> !!################################
> 
> !!Script ran on: Sat Feb 28 11:15:21 CST 2009
> 
> 
> !!Linux Distribution
> !!------------------
> 
> Fedora release 10 (Cambridge) Fedora release 10 (Cambridge) Fedora
> release 10 (Cambridge) Fedora release 10 (Cambridge)
> 
> 
> !!Kernel Information
> !!------------------
> 
> Kernel release:    2.6.27.15-170.2.24.fc10.i686
> Operating System:  GNU/Linux
> Architecture:      i686
> Processor:         i686
> SMP Enabled:       Yes
> 
> 
> !!ALSA Version
> !!------------
> 
> Driver version:     1.0.17
> Library version:
> Utilities version:  1.0.19
> 
> 
> !!Loaded ALSA modules
> !!-------------------
> 
> snd_ca0106
> snd_usb_audio
> 
> 
> !!Soundcards recognised by ALSA
> !!-----------------------------
> 
>  0 [CA0106         ]: CA0106 - CA0106
>                      Live! 7.1 24bit [SB0413] at 0xc8e0 irq 17
>  1 [U0x46d0x9a1    ]: USB-Audio - USB Device 0x46d:0x9a1
>                      USB Device 0x46d:0x9a1 at usb-0000:00:1d.7-4, high
> speed
> 
> 
> !!PCI Soundcards installed in the system
> !!--------------------------------------
> 
> 04:01.0 Multimedia audio controller: Creative Labs CA0106 Soundblaster
> 
> 
> !!Advanced information - PCI Vendor/Device/Susbsystem ID's
> !!--------------------------------------------------------
> 
> 04:01.0 0401: 1102:0007
>        Subsystem: 1102:1007
> 
> 
> !!Loaded sound module options
> !!--------------------------
> 
> !!Module: snd_ca0106
> 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
> 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
> subsystem :
> 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
> 
> !!Module: snd_usb_audio
> async_unlink : Y
> device_setup :
> 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
> 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
> nrpacks : 8
> pid :
> -
> -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
> vid :
> -
> -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
> 
> 
> !!ALSA Device nodes
> !!-----------------
> 
> crw-rw----+ 1 root root 116, 13 2009-02-25 07:33 /dev/snd/controlC0
> crw-rw----+ 1 root root 116, 15 2009-02-25 20:42 /dev/snd/controlC1
> crw-rw----+ 1 root root 116,  4 2009-02-25 07:33 /dev/snd/midiC0D0
> crw-rw----+ 1 root root 116, 12 2009-02-28 10:28 /dev/snd/pcmC0D0c
> crw-rw----+ 1 root root 116, 11 2009-02-25 21:15 /dev/snd/pcmC0D0p
> crw-rw----+ 1 root root 116, 10 2009-02-25 07:33 /dev/snd/pcmC0D1c
> crw-rw----+ 1 root root 116,  9 2009-02-25 07:33 /dev/snd/pcmC0D1p
> crw-rw----+ 1 root root 116,  8 2009-02-25 07:33 /dev/snd/pcmC0D2c
> crw-rw----+ 1 root root 116,  7 2009-02-25 07:33 /dev/snd/pcmC0D2p
> crw-rw----+ 1 root root 116,  6 2009-02-25 07:33 /dev/snd/pcmC0D3c
> crw-rw----+ 1 root root 116,  5 2009-02-25 07:33 /dev/snd/pcmC0D3p
> crw-rw----+ 1 root root 116, 14 2009-02-28 10:28 /dev/snd/pcmC1D0c
> crw-rw----+ 1 root root 116,  3 2009-02-25 07:33 /dev/snd/seq
> crw-rw----+ 1 root root 116,  2 2009-02-25 07:33 /dev/snd/timer
> 
> 
> !!ALSA configuration files
> !!------------------------
> 
> !!System wide config file (/etc/asound.conf)
> 
> #
> # Place your global alsa-lib configuration here...
> #
> 
> @hooks [
>        {
>                func load
>                files [
>                        "/etc/alsa/pulse-default.conf"
>                ]
>                errors false
>        }
> ]
> 
> 
> !!Aplay/Arecord output
> !!------------
> 
> APLAY
> 
> **** List of PLAYBACK Hardware Devices ****
> card 0: CA0106 [CA0106], device 0: ca0106 [CA0106]
>  Subdevices: 0/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 1: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 2: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 3: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> 
> ARECORD
> 
> **** List of CAPTURE Hardware Devices ****
> card 0: CA0106 [CA0106], device 0: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 1: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 2: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: CA0106 [CA0106], device 3: ca0106 [CA0106]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 1: U0x46d0x9a1 [USB Device 0x46d:0x9a1], device 0: USB Audio [USB
> Audio]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> 
> !!Amixer output
> !!-------------
> 
> !!-------Mixer controls for card 0 [CA0106]
> 
> Card hw:0 'CA0106'/'Live! 7.1 24bit [SB0413] at 0xc8e0 irq 17'
>  Mixer name    : ''
>  Components    : ''
>  Controls      : 25
>  Simple ctrls  : 17
> Simple mixer control 'Line in',0
>  Capabilities: cvolume
>  Capture channels: Front Left - Front Right
>  Limits: Capture 0 - 255
>  Front Left: Capture 207 [81%] [0.00dB]
>  Front Right: Capture 207 [81%] [0.00dB]
> Simple mixer control 'Mic',0
>  Capabilities: cvolume
>  Capture channels: Front Left - Front Right
>  Limits: Capture 0 - 255
>  Front Left: Capture 255 [100%] [24.00dB]
>  Front Right: Capture 255 [100%] [24.00dB]
> Simple mixer control 'Phone',0
>  Capabilities: cvolume
>  Capture channels: Front Left - Front Right
>  Limits: Capture 0 - 255
>  Front Left: Capture 207 [81%] [0.00dB]
>  Front Right: Capture 207 [81%] [0.00dB]
> Simple mixer control 'IEC958',0
>  Capabilities: pswitch pswitch-joined
>  Playback channels: Mono
>  Mono: Playback [off]
> Simple mixer control 'IEC958 Center/LFE',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 221 [87%] [3.50dB]
>  Front Right: Playback 221 [87%] [3.50dB]
> Simple mixer control 'IEC958 Front',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'IEC958 Rear',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'IEC958 Unknown',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'Aux',0
>  Capabilities: cvolume
>  Capture channels: Front Left - Front Right
>  Limits: Capture 0 - 255
>  Front Left: Capture 207 [81%] [0.00dB]
>  Front Right: Capture 207 [81%] [0.00dB]
> Simple mixer control 'Analog Center/LFE',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'Analog Front',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 153 [60%] [-13.50dB]
>  Front Right: Playback 153 [60%] [-13.50dB]
> Simple mixer control 'Analog Rear',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 191 [75%] [-4.00dB]
>  Front Right: Playback 191 [75%] [-4.00dB]
> Simple mixer control 'Analog Side',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'Analog Source',0
>  Capabilities: cenum
>  Items: 'Phone' 'Mic' 'Line in' 'Aux'
>  Item0: 'Line in'
> Simple mixer control 'CAPTURE feedback',0
>  Capabilities: pvolume
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 0 [0%] [-99999.99dB]
>  Front Right: Playback 0 [0%] [-99999.99dB]
> Simple mixer control 'Digital Source',0
>  Capabilities: cenum
>  Items: 'IEC958 out' 'i2s mixer out' 'IEC958 in' 'i2s in' 'AC97 in'
> 'SRC out'
>  Item0: 'i2s in'
> Simple mixer control 'Shared Mic/Line in',0
>  Capabilities: cenum
>  Items: 'Line in' 'Mic in'
>  Item0: 'Line in'
> 
> !!-------Mixer controls for card 1 [U0x46d0x9a1]
> 
> Card hw:1 'U0x46d0x9a1'/'USB Device 0x46d:0x9a1 at usb-0000:00:1d.7-4,
> high speed'
>  Mixer name    : 'USB Mixer'
>  Components    : 'USB046d:09a1'
>  Controls      : 2
>  Simple ctrls  : 1
> Simple mixer control 'Mic',0
>  Capabilities: cvolume cvolume-joined cswitch cswitch-joined
>  Capture channels: Mono
>  Limits: Capture 0 - 3072
>  Mono: Capture 545 [18%] [18.00dB] [on]
> 
> 
> !!Alsactl output
> !!-------------
> 
> --startcollapse--
> state.CA0106 {
>        control.1 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'Analog Front Playback Volume'
>                value.0 153
>                value.1 153
>        }
>        control.2 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'Analog Rear Playback Volume'
>                value.0 191
>                value.1 191
>        }
>        control.3 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'Analog Center/LFE Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.4 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'Analog Side Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.5 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'IEC958 Front Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.6 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'IEC958 Rear Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.7 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'IEC958 Center/LFE Playback Volume'
>                value.0 221
>                value.1 221
>        }
>        control.8 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'IEC958 Unknown Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.9 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -5175
>                comment.dbmax 1200
>                iface MIXER
>                name 'CAPTURE feedback Playback Volume'
>                value.0 0
>                value.1 0
>        }
>        control.10 {
>                comment.access read
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Mask'
>                value
> ffffffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
>        }
>        control.11 {
>                comment.access read
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Mask'
>                index 1
>                value
> ffffffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
>        }
>        control.12 {
>                comment.access read
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Mask'
>                index 2
>                value
> ffffffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
>        }
>        control.13 {
>                comment.access read
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Mask'
>                index 3
>                value
> ffffffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
>        }
>        control.14 {
>                comment.access 'read write'
>                comment.type BOOLEAN
>                comment.count 1
>                iface MIXER
>                name 'IEC958 Playback Switch'
>                value false
>        }
>        control.15 {
>                comment.access 'read write'
>                comment.type ENUMERATED
>                comment.count 1
>                comment.item.0 'IEC958 out'
>                comment.item.1 'i2s mixer out'
>                comment.item.2 'IEC958 in'
>                comment.item.3 'i2s in'
>                comment.item.4 'AC97 in'
>                comment.item.5 'SRC out'
>                iface MIXER
>                name 'Digital Source Capture Enum'
>                value 'i2s in'
>        }
>        control.16 {
>                comment.access 'read write'
>                comment.type ENUMERATED
>                comment.count 1
>                comment.item.0 Phone
>                comment.item.1 Mic
>                comment.item.2 'Line in'
>                comment.item.3 Aux
>                iface MIXER
>                name 'Analog Source Capture Enum'
>                value 'Line in'
>        }
>        control.17 {
>                comment.access 'read write'
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Default'
>                value
> '0492100200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
>        }
>        control.18 {
>                comment.access 'read write'
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Default'
>                index 1
>                value
> '0492100200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
>        }
>        control.19 {
>                comment.access 'read write'
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Default'
>                index 2
>                value
> '0492100200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
>        }
>        control.20 {
>                comment.access 'read write'
>                comment.type IEC958
>                comment.count 1
>                iface PCM
>                name 'IEC958 Playback Default'
>                index 3
>                value
> '0492100200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
>        }
>        control.21 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -10350
>                comment.dbmax 2400
>                iface MIXER
>                name 'Phone Capture Volume'
>                value.0 207
>                value.1 207
>        }
>        control.22 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -10350
>                comment.dbmax 2400
>                iface MIXER
>                name 'Mic Capture Volume'
>                value.0 255
>                value.1 255
>        }
>        control.23 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -10350
>                comment.dbmax 2400
>                iface MIXER
>                name 'Line in Capture Volume'
>                value.0 207
>                value.1 207
>        }
>        control.24 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 2
>                comment.range '0 - 255'
>                comment.dbmin -10350
>                comment.dbmax 2400
>                iface MIXER
>                name 'Aux Capture Volume'
>                value.0 207
>                value.1 207
>        }
>        control.25 {
>                comment.access 'read write'
>                comment.type ENUMERATED
>                comment.count 1
>                comment.item.0 'Line in'
>                comment.item.1 'Mic in'
>                iface MIXER
>                name 'Shared Mic/Line in Capture Switch'
>                value 'Line in'
>        }
> }
> state.U0x46d0x9a1 {
>        control.1 {
>                comment.access 'read write'
>                comment.type BOOLEAN
>                comment.count 1
>                iface MIXER
>                name 'Mic Capture Switch'
>                value true
>        }
>        control.2 {
>                comment.access 'read write'
>                comment.type INTEGER
>                comment.count 1
>                comment.range '0 - 3072'
>                comment.dbmin 1800
>                comment.dbmax 1800
>                iface MIXER
>                name 'Mic Capture Volume'
>                value 545
>        }
> }
> --endcollapse--
> 
> 
> !!All Loaded Modules
> !!------------------
> 
> Module
> snd_usb_audio
> uvcvideo
> compat_ioctl32
> snd_usb_lib
> videodev
> v4l1_compat
> snd_hwdep
> vfat
> fat
> fuse
> sunrpc
> nf_conntrack_netbios_ns
> ip6t_REJECT
> nf_conntrack_ipv6
> ip6table_filter
> ip6_tables
> ipv6
> p4_clockmod
> dm_multipath
> uinput
> ppdev
> snd_ca0106
> snd_rawmidi
> snd_ac97_codec
> snd_seq_dummy
> arc4
> snd_seq_oss
> snd_seq_midi_event
> ecb
> snd_seq
> crypto_blkcipher
> snd_seq_device
> snd_pcm_oss
> dcdbas
> snd_mixer_oss
> snd_pcm
> pcspkr
> snd_timer
> iTCO_wdt
> iTCO_vendor_support
> i2c_i801
> snd
> ath5k
> mac80211
> soundcore
> cfg80211
> ac97_bus
> snd_page_alloc
> parport_pc
> usb_storage
> parport
> usblp
> tg3
> libphy
> radeon
> drm
> i2c_algo_bit
> i2c_core
> 
> 
> 

> I do not see anything wrong. You do not even have a .asoundrc.
> You should check, first, whether you have a cabling problem.
> Make your tests with the usb device unpluged, if possible.

> Driver version:     1.0.17
> Library version:
> Utilities version:  1.0.19

> I do not understand  why the library version was not printed, but you said
> you have alsa-lib-1.0.19-2.fc10.i386.

> If you updated recently, I advise a reboot. If you have already done that,
> then I suggest you upgrade alsa-driver to 1.0.19 to match your lib version.

> http://dl.atrpms.net/f10-i386/atrpms/stable/alsa-kmdl-2.6.27.15-170.2.24.fc10-1.0.19-77.fc10.i686.rpm

> This rpm will just install the alsa modules version 1.0.19.
> If you think the result is not better, you can just uninstall it (no
> kernel module is overwriten).

> In either case, you need to reboot to reload the new modules.
> Also, remember to adjust the mixer levels appropriately.

> Cheers.

> -- 
> Paulo Roma Cavalcanti
> LCG - UFRJ

As far as I can tell, the only USB sound-related device is the
microphone on my webcam. I've unplugged that without effect. I've also
tried disabling/muting all input devices via the alsa mixer and
unplugging/replugging the cables to the external speaker system.

- --

  Steve
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