On Fri, 23 Jan 2004, Michael J. Sherman wrote:
Doing a 'cat /proc/asound/cards' reports "no souncards". I attached this external sound card to another machine *without* ALSA and it picked it up just fine and it works (using Fedora kudzu to pick up the new device and configure it for me).
Is there something I'm missing about using a USB sound device with ALSA? Anyone else using this Creative Soundblaster MP3+?
Yes, me. Probably the hotplug scripts failed for some reason. What shows the 'dmesg' and /var/log/messages?
The dmesg and various log files show the device loads properly. Here's the appropriate section from /var/log/messages:
Jan 22 20:05:28 localhost kernel: hub.c: new USB device 00:10.0-2, assigned address 2
Jan 22 20:05:28 localhost kernel: usb.c: USB device 2 (vend/prod x41e/0x3010) is not claimed by any active driver.
Jan 22 20:05:28 localhost kernel: usb.c: registered new driver audio
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 audiocontrol interface 0 has 1 input and 1 output AudioStreaming interfaces
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 interface 2 altsetting 1 channels 2 framesize 2 configured
Jan 22 20:05:28 localhost kernel: usbaudio: valid input sample rate 48000
Jan 22 20:05:28 localhost kernel: usbaudio: valid input sample rate 44100
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 interface 2 altsetting 1: format 0x01000010 sratelo 44100 sratehi 48000 attributes 0x01
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 interface 1 altsetting 0 does not have an endpoint
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 interface 1 altsetting 1 channels 2 framesize 2 configured
Jan 22 20:05:28 localhost kernel: usbaudio: valid output sample rate 48000
Jan 22 20:05:28 localhost kernel: usbaudio: device 2 interface 1 altsetting 1: format 0x01000010 sratelo 48000 sratehi 48000 attributes 0x00
Jan 22 20:05:28 localhost kernel: usbaudio: registered dsp 14,3
Jan 22 20:05:28 localhost kernel: usbaudio: no mixer controls found for
Terminal 5
Jan 22 20:05:28 localhost kernel: usb.c: registered new driver snd-usb-audio
Jan 22 20:05:28 localhost kernel: usbaudio: registered mixer 14,0
Jan 22 20:05:28 localhost kernel: usbaudio: selector unit 8: ignoring channel 3
Jan 22 20:05:28 localhost kernel: usbaudio: registered mixer 14,16
Jan 22 20:05:28 localhost kernel: audio.c: v1.0.0:USB Audio Class driver
Jan 22 20:05:28 localhost kernel: usb-uhci.c: ENXIO 80000280, flags 0, urb dd1be340, burb dd1be540
Jan 22 20:05:28 localhost kernel: usb-uhci.c: ENXIO 80000280, flags 0, urb dd1be440, burb dd1be540
Jan 22 20:05:28 localhost kernel: usb-uhci.c: ENXIO 80000280, flags 0, urb dd1be540, burb dd1be440
Jan 22 20:05:28 localhost kernel: usb-uhci.c: ENXIO 80000280, flags 0, urb dd1be440, burb dd1be540
Now, on this machine that I'm trying this on I have RedHat 9. But it looks like it finds the USB device ok. Could it be a kernel issue? Any more ideas? The machine has an on-board VIA sound chip that I have ALSA working with just fine. When I tried using this USB external card I disabled the onboard VIA sound in BIOS and then did the whole ALSA compile and install routine. No dice.
Could you provide some details about how you load the ALSA modules, your modules.conf settings, etc..?
Thanks, Mike
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