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Posted: **Sun Nov 05, 2017 12:32 am**

This is probably a simple fix, but I need a pointer where to go.

I have plugged in a SignaLink USB device which is an external sound card for use
in ham radio. It is essentially a modem for radio use.

I edited /lib/udev/rules.d/69-libmtp.rules to skip this device so I don't get the mtp-probe
error after it's plugged in. [nb vendor = 08bb, device = 29c6]

The /var/log/syslog shows that it's recognized.

Nov 4 21:25:40 Lenovo kernel: [ 2258.063025] usb 2-1.1: new full-speed USB device number 4 using ehci-pci
Nov 4 21:25:40 Lenovo kernel: [ 2258.164314] usb 2-1.1: New USB device found, idVendor=08bb, idProduct=29c6
Nov 4 21:25:40 Lenovo kernel: [ 2258.164322] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 4 21:25:40 Lenovo kernel: [ 2258.164326] usb 2-1.1: Product: USB AUDIO CODEC
Nov 4 21:25:40 Lenovo kernel: [ 2258.164330] usb 2-1.1: Manufacturer: BurrBrown from Texas Instruments
Nov 4 21:25:40 Lenovo kernel: [ 2258.179607] input: BurrBrown from Texas Instruments USB AUDIO CODEC as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.3/0003:08BB:29C6.0002/input/input18
Nov 4 21:25:40 Lenovo kernel: [ 2258.235456] hid-generic 0003:08BB:29C6.0002: input,hidraw0: USB HID v1.00 Device [BurrBrown from Texas Instruments USB AUDIO CODEC] on usb-0000:00:1d.0-1.1/input3

And I see the system recognizes the device here:

jeff@Lenovo ~ $ cat /proc/asound/cards
0 [MID ]: HDA-Intel - HDA Intel MID
HDA Intel MID at 0xf2620000 irq 28
1 [CODEC ]: USB-Audio - USB AUDIO CODEC
BurrBrown from Texas Instruments USB AUDIO CODEC at usb-0000:00:1d.0-1.1, full

jeff@Lenovo ~ $ lsusb
Bus 002 Device 003: ID 08bb:29c6 Texas Instruments PCM2906C Audio CODEC <---- THIS IS IT
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 17ef:480f Lenovo Integrated Webcam [R5U877]
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But there is no /dev/*USB* device created.

Can someone give me a clue?

Thanks,

Jeff

PS: System info

Code: Select all

Lenovo ~ # inxi -Fxz
System:    Host: Lenovo Kernel: 4.4.0-93-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.2.7 (Gtk 3.18.9-1ubuntu3.3)
           Distro: Linux Mint 18.1 Serena
Machine:   System: LENOVO (portable) product: 4313CTU v: ThinkPad T510
           Mobo: LENOVO model: 4313CTU
           Bios: LENOVO v: 6MET83WW (1.43 ) date: 02/24/2011
CPU:       Dual core Intel Core i5 M 560 (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10640
           clock speeds: max: 2667 MHz 1: 1199 MHz 2: 1466 MHz 3: 1733 MHz
           4: 1599 MHz
Graphics:  Card: Intel Core Processor Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
           tty size: 80x24 Advanced Data: N/A for root
Audio:     Card-1 Intel 5 Series/3400 Series High Definition Audio
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Texas Instruments PCM2906C Audio CODEC
           driver: USB Audio usb-ID: 002-004
           Sound: Advanced Linux Sound Architecture v: k4.4.0-93-generic
Network:   Card-1: Intel 82577LM Gigabit Network Connection
           driver: e1000e v: 3.2.6-k port: 1820 bus-ID: 00:19.0
           IF: enp0s25 state: down mac: <filter>
           Card-2: Realtek RTL8191SEvB Wireless LAN Controller
           driver: rtl8192se port: 2000 bus-ID: 03:00.0
           IF: wlp3s0 state: up mac: <filter>
Drives:    HDD Total Size: 750.2GB (1.7% used)
           ID-1: /dev/sda model: HGST_HTS541075A9 size: 750.2GB temp: 29C
Partition: ID-1: / size: 684G used: 8.2G (2%) fs: ext4 dev: /dev/sda1
           ID-2: swap-1 size: 4.08GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 36.0C mobo: 0.0C
           Fan Speeds (in rpm): cpu: 2598
Info:      Processes: 184 Uptime: 42 min Memory: 854.3/3749.5MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35

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External sound card deivce recognized by no /dev/USB* device created

External sound card deivce recognized by no /dev/USB* device created