Hello, I'm running Fedora Core 9 kernel 2.6.25 I'm trying the USB DEM-PCM2900/2902 demonstration board from Texas Instrument, and I'm having a problem. This chip is supposed to be a standard generic USB audio stereo input/output The playback side works well, but I have an issue with the capture. When I run alsamixer, I get no capture device despite I have pcm0c in /proc/asound/card1 Opening of capture device with snd_pcm_open() works well, but I only get white noise. Below is the kernel messages dump when I insert the device. Does anybody have an idea of what is wrong ? Should I do something special in /etc/alsa/alsa.conf ? Regards usb 4-2: new full speed USB device using uhci_hcd and address 3 usb 4-2: configuration #1 chosen from 1 choice input: Burr-Brown from TI USB Audio CODEC as /devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2:1.3/input/input7 input,hidraw3: USB HID v1.00 Device [Burr-Brown from TI USB Audio CODEC ] on usb-0000:00:1d.2-2 usb 4-2: New USB device found, idVendor=08bb, idProduct=2902 usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 4-2: Product: USB Audio CODEC usb 4-2: Manufacturer: Burr-Brown from TI ALSA sound/usb/usbaudio.c:2798: 3:1:1: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:1:2: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:1:3: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:1:4: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:1:5: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:1:6: add audio endpoint 0x2 ALSA sound/usb/usbaudio.c:2798: 3:2:1: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:2: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:3: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:4: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:5: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:6: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:7: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:8: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:9: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:10: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:11: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:12: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:13: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:14: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:15: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:16: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:17: add audio endpoint 0x84 ALSA sound/usb/usbaudio.c:2798: 3:2:18: add audio endpoint 0x84 ALSA sound/usb/usbmixer.c:988: [3] FU [PCM Playback Switch] ch = 1, val = 0/1/1 ALSA sound/usb/usbmixer.c:405: cannot set ctl value: req = 0x4, wValue = 0x201, wIndex = 0x300, type = 4, data = 0x80/0x0 ALSA sound/usb/usbmixer.c:988: [3] FU [PCM Playback Volume] ch = 2, val = -32768/0/256 usbcore: registered new interface driver snd-usb-audio ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
