On 08/07/17 05:15, Rodolfo Medina wrote:
Hi all.
I just bought an external USB audio card. I plugged it into the USB port of my
PC and plugged a 3.5mm jack microphone into the `mic' input of the card. It is
shown in lsusb:
$ lsusb
Bus 002 Device 005: ID 17ef:602e Lenovo
Bus 002 Device 003: ID 046d:c312 Logitech, Inc. DeLuxe 250 Keyboard
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 010: ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controlle
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
and also in arecord:
$ arecord --list-devices
**** List of CAPTURE Hardware Devices ****
card 1: Generic [HD-Audio Generic], device 0: ALC662 rev3 Analog [ALC662 rev3
Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 2: ALC662 rev3 Alt Analog [ALC662
rev3 Alt Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
Besides, I ran alsamixer, selected the USB card and unmuted everything. But
then, when I try to record, no sound is recorded. I do:
$ sox -t alsa hw:2,0 output.wav
, or
$ arecord -f S16_LE -D hw:2,0 -r 96000 test.wav
, or also within Audacity. But nothing, my voice is not recorded. Please help
whoever can.
STFW I found some information that might be useful.
Here is the chip makers web site:
https://www.cmedia.com.tw/EN/index.html
It looks like two versions of the chip are currently made:
https://www.cmedia.com.tw/products/USB20_FULL_SPEED/CM108AH
https://www.cmedia.com.tw/products/USB20_FULL_SPEED/CM108B
This link indicates that some version of the chip worked on some Linux
machines at some point in time:
https://linux-hardware.org/index.php?id=usb:0d8c-013c
More links:
http://www.linux-usb.org/USB-guide/x319.html
https://linux-hardware.org/index.php?id=usb:0d8c-013c
There are several links for people with Raspberry Pi boards running
Raspian. They made changes to their ALSA configuration to use a CM108
USB audio interface. I don't know if those instructions apply to Debian.
Please run the following commands, and cut and past the commands and
their outputs into a reply:
cat /etc/debian_version
uname -a
dmesg | grep -i cm108 -A 10 -B 10
David