Hi,

I have a webcam which has microphone-only USB audio capability. However, not only has this device stopped recording anything but it has also vanished from the "arecord -L" list and appeared in the "aplay -L" one instead:

$ arecord -L default:CARD=Audigy2 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Default Audio Device front:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Front speakers rear:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Rear speakers center_lfe:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Center and Subwoofer speakers side:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Side speakers surround40:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 4.0 Surround output to Front and Rear speakers surround41:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback IEC958 (S/PDIF) Digital Audio Output null Discard all samples (playback) or generate zero samples (capture)

and:

$ aplay -L default:CARD=Audigy2 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Default Audio Device front:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Front speakers rear:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Rear speakers center_lfe:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Center and Subwoofer speakers side:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback Side speakers surround40:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 4.0 Surround output to Front and Rear speakers surround41:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Audigy2,DEV=0 Audigy 2 ZS [SB0353], ADC Capture/Standard PCM Playback IEC958 (S/PDIF) Digital Audio Output null Discard all samples (playback) or generate zero samples (capture) default:CARD=WebCam USB Device 0x46d:0x8b4, USB Audio Default Audio Device front:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio Front speakers surround40:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio 4.0 Surround output to Front and Rear speakers surround41:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=WebCam,DEV=0 USB Device 0x46d:0x8b4, USB Audio IEC958 (S/PDIF) Digital Audio Output

Here is my .asoundrc file:

ctl.Audigy2 { type hw card 0 }

pcm.Audigy2 { type plug slave { pcm "hw:0,0" } }

ctl.webcam { type hw card 1 }

pcm.webcam { type plug slave { pcm "hw:1,0" } }

and here is what /proc/asound looks like:

]$ ls -als /proc/asound/ total 0 0 dr-xr-xr-x 6 root root 0 2007-12-01 15:55 . 0 dr-xr-xr-x 172 root root 0 2007-12-01 14:37 .. 0 lrwxrwxrwx 1 root root 5 2007-12-01 15:55 Audigy2 -> card0 0 dr-xr-xr-x 11 root root 0 2007-12-01 15:55 card0 0 dr-xr-xr-x 3 root root 0 2007-12-01 15:55 card1 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 cards 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 devices 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 hwdep 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 modules 0 dr-xr-xr-x 2 root root 0 2007-12-01 15:55 oss 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 pcm 0 dr-xr-xr-x 2 root root 0 2007-12-01 15:55 seq 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 timers 0 -r--r--r-- 1 root root 0 2007-12-01 15:55 version 0 lrwxrwxrwx 1 root root 5 2007-12-01 15:55 WebCam -> card1

This happens with both Fedora 7 and Fedora 8. Could there be a problem with the snd-usb-audio kernel module, please?

Cheers, Chris

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