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Old 08-10-2010, 03:32 PM   #1
getack
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Registered: Jul 2010
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Lucid not detecting USB mic


Well I have this really shweet Samson C01U usb studio condenser mic. When it is plugged in before I boot my machine, everything works like a charm, and I can sound like a rockstar recording my stuffs in UbuntuStudio 10.04 x64.

But when I'm not being a rockstar, I'm using my normal Lucid distro to go about my everyday tasks. So when I decide to call someone on skype, I plug the mic in, and nothing happens. The sound config window does not show the device? I do not want to reboot every time to use the mic (and that's all that works), and I do not want to leave it standing on my desk either.

Any ideas? Maybe I should restart Pulse or something? Help would be appreciated!
 
Old 08-10-2010, 05:26 PM   #2
Peacedog
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Hi getack, Welcome to LQ. What does lsusb say about the device after it's plugged in? How about dmesg? Post the output from the following after the device is plugged in please.

Code:
$ sudo lsusb
$ dmesg | tail
Good luck. ;-)
 
Old 08-11-2010, 02:19 PM   #3
getack
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Well here is the lsusb output:


Code:
Bus 007 Device 002: ID 17a0:0001  
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 045e:00f9 Microsoft Corp. Wireless Desktop Receiver 3.1
Bus 006 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 13fe:3123 Kingston Technology Company Inc. 
Bus 001 Device 002: ID 125f:c83a A-DATA Technology Co., Ltd. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The things plugged into my machine via usb is:
* 2 Flash Disks
* Wireless Keyboard receiver
* Bluetooth dongle
* And the mic.

The mic has an LED that is on as I speak, but clearly it is not being detected!

Here is the output for dmesg:

Code:
[   96.700564] sd 7:0:0:0: [sde] Assuming drive cache: write through
[   96.703889] sd 7:0:0:0: [sde] Assuming drive cache: write through
[   96.703894]  sde: sde1
[   96.725769] sd 7:0:0:0: [sde] Assuming drive cache: write through
[   96.725775] sd 7:0:0:0: [sde] Attached SCSI removable disk
[ 3915.581844] [drm:i915_gem_do_execbuffer] *ERROR* Object f4b9a240 appears more than once in object list
[ 3947.840174] ndiswrapper (iw_set_auth:1602): invalid cmd 12
[ 3955.863346] ndiswrapper (NdisMIndicateStatus:2084): unrecognized PMKID ignored
[ 4930.244469] usb 7-1: new full speed USB device using uhci_hcd and address 2
[ 4930.444146] usb 7-1: configuration #1 chosen from 1 choice
I have no idea what is going on there, so a little lesson on dmesg would be very cool!

Thanks
 
Old 08-11-2010, 05:57 PM   #4
Peacedog
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How about lsmod? Are the usb sound modules loading?

Code:
$ sudo lsmod | grep snd
Good luck. ;-)
 
Old 08-14-2010, 04:27 AM   #5
getack
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Strange, I did a little experiment, the mic is plugged in now, and it is working (after rebooting with the mic plugged in). After running lsusb again, it spits out the same as before! Without showing the mic! Really baffling.

Anyhow, here is the lsmod | grep snd output:


Code:
snd_hda_codec_realtek   203168  1 
snd_usb_audio          75765  1 
snd_usb_lib            15658  1 snd_usb_audio
snd_hda_intel          21877  4 
snd_hda_codec          74201  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               5412  2 snd_usb_audio,snd_hda_codec
snd_pcm_oss            35308  0 
snd_mixer_oss          13746  1 snd_pcm_oss
snd_pcm                70662  5 snd_usb_audio,snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy           1338  0 
snd_seq_oss            26726  0 
snd_seq_midi            4557  0 
snd_rawmidi            19056  2 snd_usb_lib,snd_seq_midi
snd_seq_midi_event      6003  2 snd_seq_oss,snd_seq_midi
snd_seq                47263  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              19098  2 snd_pcm,snd_seq
snd_seq_device          5700  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd                    54148  22 snd_hda_codec_realtek,snd_usb_audio,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               6620  1 snd
snd_page_alloc          7076  2 snd_hda_intel,snd_pcm
So it looks like they are loading?
 
Old 08-14-2010, 09:30 AM   #6
Peacedog
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What does the following produce with and without the mic plugged in?

Code:
$ cat /proc/asound/cards
Good luck. ;-)
 
  


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