Hi,

 

I've a small amount of linux knowledge... enough to be dangerous but not enough to understand fully what's going on.  I'm learning slowly but have reached a frustrating failure with my A95x revision 2 set top box.

 

It's running "ARMBIAN 5.41.1 user-built Debian GNU/Linux 9 (stretch) 4.17.0-rc3-next-20180430-amlogics905x"

 

I have a behringer UCA202 USB soundcard - it uses standard texas instruments chipset so should just be plug and play.  But there's a gap in my knowledge and in the process of getting the soundcard to detect within Armbian.

 

lsbusb outputs....

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 08bb:2902 Texas Instruments PCM2902 Audio Codec
Bus 001 Device 002: ID 2500:0020  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

 

Relevant lines from dmesg are:

 

[    1.420548] usbcore: registered new interface driver usbfs
[    1.420620] usbcore: registered new interface driver hub
[    1.420714] usbcore: registered new device driver usb

[    1.422003] Advanced Linux Sound Architecture Driver Initialized.

[    3.034073] hub 1-0:1.0: USB hub found
[    3.037122] hub 1-0:1.0: 2 ports detected
[    3.041352] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[    3.046493] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[    3.054088] xhci-hcd xhci-hcd.0.auto: Host supports USB 3.0  SuperSpeed
[    3.060691] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[    3.069177] hub 2-0:1.0: USB hub found
[    3.072406] hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19)
[    3.129093] ALSA device list:
[    3.132447]   No soundcards found.

[    3.375015] usb 1-1: new high-speed USB device number 2 using xhci-hcd
[    3.739136] usb 1-2: new full-speed USB device number 3 using xhci-hcd
[    3.952146] input: Burr-Brown from TI               USB Audio CODEC  as /devices/platform/soc/soc:usb@c9000000/c9000000.dwc3/xhci-hcd.0.auto/usb1/1-2/1-2:1.3/0003:08BB:2902.0001/input/input0
[    4.072254] hid-generic 0003:08BB:2902.0001: input: USB HID v1.00 Device [Burr-Brown from TI               USB Audio CODEC ] on usb-xhci-hcd.0.auto-2/input3

 

aplay -l shows

 

aplay: device_list:270: no soundcards found...

 

 

I've done a lot of googling and tried various potential solutions none of which seem to make ALSA see the soundcard even though it seems to be detected at a USB level.

 

I'd be extremely grateful if anyone can help guide me through this?  

 

Thanks

 

Simon

5 hours ago, shardwick said:

Hi,

 

I've a small amount of linux knowledge... enough to be dangerous but not enough to understand fully what's going on.  I'm learning slowly but have reached a frustrating failure with my A95x revision 2 set top box.

 

It's running "ARMBIAN 5.41.1 user-built Debian GNU/Linux 9 (stretch) 4.17.0-rc3-next-20180430-amlogics905x"

 

I have a behringer UCA202 USB soundcard - it uses standard texas instruments chipset so should just be plug and play.  But there's a gap in my knowledge and in the process of getting the soundcard to detect within Armbian.

 

lsbusb outputs....

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 08bb:2902 Texas Instruments PCM2902 Audio Codec
Bus 001 Device 002: ID 2500:0020  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

 

Relevant lines from dmesg are:

 

[    1.420548] usbcore: registered new interface driver usbfs
[    1.420620] usbcore: registered new interface driver hub
[    1.420714] usbcore: registered new device driver usb

[    1.422003] Advanced Linux Sound Architecture Driver Initialized.

[    3.034073] hub 1-0:1.0: USB hub found
[    3.037122] hub 1-0:1.0: 2 ports detected
[    3.041352] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[    3.046493] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[    3.054088] xhci-hcd xhci-hcd.0.auto: Host supports USB 3.0  SuperSpeed
[    3.060691] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[    3.069177] hub 2-0:1.0: USB hub found
[    3.072406] hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19)
[    3.129093] ALSA device list:
[    3.132447]   No soundcards found.

[    3.375015] usb 1-1: new high-speed USB device number 2 using xhci-hcd
[    3.739136] usb 1-2: new full-speed USB device number 3 using xhci-hcd
[    3.952146] input: Burr-Brown from TI               USB Audio CODEC  as /devices/platform/soc/soc:usb@c9000000/c9000000.dwc3/xhci-hcd.0.auto/usb1/1-2/1-2:1.3/0003:08BB:2902.0001/input/input0
[    4.072254] hid-generic 0003:08BB:2902.0001: input: USB HID v1.00 Device [Burr-Brown from TI               USB Audio CODEC ] on usb-xhci-hcd.0.auto-2/input3

 

aplay -l shows

 

aplay: device_list:270: no soundcards found...

 

 

I've done a lot of googling and tried various potential solutions none of which seem to make ALSA see the soundcard even though it seems to be detected at a USB level.

 

I'd be extremely grateful if anyone can help guide me through this?  

 

Thanks

 

Simon

 

Can you see (lsmod) the kernel module 'snd_usb_audio'. (Try modprobe if not)

28 minutes ago, arox said:

 

Can you see (lsmod) the kernel module 'snd_usb_audio'. (Try modprobe if not)

 

Thanks Arox... no snd_usb_audio listed on lsmod and when trying modprobe (assuming I did it right)

 

modprobe: FATAL: Module snd_usb_audio not found in directory /lib/modules/4.17.0-rc3-next-20180430-amlogics905x

 

So the n00b question is where and how do I get the module  I'll do some further research and learning about modules in the meantime. Thanks all!

 

 

Try :

 

zcat /proc/config.gz | grep -i USB_AUDIO

 

If you dont see

 

CONFIG_SND_USB_AUDIO=m
 

then I think you may need to recompile the kernel ...

 

 

zcat /proc/config.gz | grep -i USB_AUDIO gives...

 

# CONFIG_SND_USB_AUDIO is not set

 

Maybe @igor  could have a look because I think no external usb sound card can run ?

7 minutes ago, arox said:

Maybe @igor  could have a look because I think no external usb sound card can run ?

Not build from the official tree. In any case, it goes this way -> edit configuration, config/kernel/this-kerne.conf and submit a PR https://docs.armbian.com/Process_Contribute/

This all looks very complex and I'm out of my depth with pull requests! 

 

Is there an earlier version of the kernel that supports USB soundcards? Could I download that and change kernel without affecting the work I've already done on my a95x? If so, are there any step by step guides anywhere? 

 

Thanks

Simon

On 8/16/2018 at 5:19 PM, shardwick said:

ARMBIAN 5.41.1 user-built Debian GNU/Linux 9 (stretch) 4.17.0-rc3-next-20180430-amlogics905x

This means somebody made an Armbian image by using our tools. That's all I know.