Starting Point Solutions DAC3 and Linux

[mrflibble]

Hello
 
I am having difficulty getting my Starting Point Solutions DAC3 to work under Linux Mint 17.3 (it works okay under Windows 10). I was wondering if anybody had any success in getting to work with Linux or if anybody has any suggestions.
 
Prior to this DAC I was using an Audiolab MDAC successfully with ALSA - I have PulseAudio disabled on my system. Additionally, I tested the new DAC on a live version of Lubuntu 16.04 and with a live version of Knoppix - in both cases it also failed to work. I tested it under Windows 10 and it works fine there.
 
If I try to use aplay to play a wav I receive the following error:
 

aplay -D default test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
aplay: pcm_write:1939: write error: No such device

 
syslog shows the following:
 

 
Jul  9 15:38:31 atlas kernel: [ 4805.148059] usb 7-2: USB disconnect, device number 19
Jul  9 15:38:32 atlas kernel: [ 4805.532022] usb 7-2: new full-speed USB device number 20 using uhci_hcd
Jul  9 15:38:32 atlas kernel: [ 4805.725024] usb 7-2: New USB device found, idVendor=2504, idProduct=0201
Jul  9 15:38:32 atlas kernel: [ 4805.725029] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jul  9 15:38:32 atlas kernel: [ 4805.725032] usb 7-2: Product: TDA 1543 DAC 3 v1.4
Jul  9 15:38:32 atlas kernel: [ 4805.725034] usb 7-2: Manufacturer: STARTING POINT SYSTEMS
Jul  9 15:38:32 atlas kernel: [ 4805.725035] usb 7-2: SerialNumber:
Jul  9 15:38:32 atlas kernel: [ 4805.745018] usb 7-2: Warning! Unlikely big volume range (=65535), cval->res is probably wrong.
Jul  9 15:38:32 atlas kernel: [ 4805.745023] usb 7-2: [2] FU [PCM Playback Volume] ch = 1, val = -32768/32767/1
Jul  9 15:38:32 atlas mtp-probe: checking bus 7, device 20: "/sys/devices/pci0000:00/0000:00:1d.1/usb7/7-2"
Jul  9 15:38:32 atlas mtp-probe: bus: 7, device: 20 was not an MTP device

 
Many thanks
 

 

[mrflibble]

Turns out there is a bug in the USB firmware of the device. The engineer is on the case.