Good day, On Dec 23, 2015 16:06, "z0rk" <z...@carukia.net> wrote: > > Linux voyage 3.14.12-voyage-rt-rt9 #1 SMP PREEMPT RT Fri Apr 17 15:10:46 HKT > 2015 i686 GNU/Linux > > USB DAC turned on and connected > > dmesg > [ 283.995809] usb 5-8: USB disconnect, device number 4 > [ 294.335129] usb 5-8: new high-speed USB device number 5 using ehci-pci > [ 294.450184] usb 5-8: New USB device found, idVendor=20b1, idProduct=000a > [ 294.450871] usb 5-8: New USB device strings: Mfr=1, Product=3, > SerialNumber=0 > [ 294.451628] usb 5-8: Product: xCORE USB Audio 2.0 > [ 294.452135] usb 5-8: Manufacturer: XMOS > [ 294.453256] cannot find the slot for index 0 (range 0-0), error: -16 > [ 294.453918] cannot create card instance 0 > [ 294.454456] snd-usb-audio: probe of 5-8:1.0 failed with error -5 > > Only my internal audio device is recognized > > aplay -l > root@voyage:~# aplay -l > **** List of PLAYBACK Hardware Devices **** > card 0: Intel [HDA Intel], device 0: STAC9228 Analog [STAC9228 Analog] > Subdevices: 0/1 > Subdevice #0: subdevice #0 > > I thought this thread might help > > http://voyage-linux.34677.n3.nabble.com/voyage-mpd-0-10-0-does-not-recognize-Combo384-td4026314.html#a4026316 > > I removed the line options snd-usb-audio index=0 from > /etc/modprobe.d/alsa-base.conf. Now I get > > aplay -l > root@voyage:~# aplay -l > **** List of PLAYBACK Hardware Devices **** > card 0: Intel [HDA Intel], device 0: STAC9228 Analog [STAC9228 Analog] > Subdevices: 0/1 > Subdevice #0: subdevice #0 > card 1: x20 [xCORE USB Audio 2.0], device 0: USB Audio [USB Audio] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > > So the device is recognized, BUT there's still no audio playing through it. > I've tried to use alsamixer and F6 to set the sound card device to xCore > USB, but still no audio is playing through it. > > I've also tried to change the line in /etc/modprobe.d/alsa-base.conf to > options snd-usb-audio index=1, but the result is exactly the same. > > Any help is appreciated.
Two suggestions. The 3.14 kernel is pretty old. Can you try this on a newer kernel, for example on a desktop or laptop running a 4.x kernel? Maybe the latest Ubuntu or Fedora live CD? Then, if that doesn't work, try the ALSA user mailing list alsa-u...@lists.sourceforge.net (you have to subscribe)
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