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Old 24th January 2013, 08:14 AM   #11
phofman is offline phofman  Czech Republic
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Join Date: Apr 2005
Location: Pilsen
Originally Posted by Crumboo View Post
I'm not sure that there any upgrades/downgrades of the firmware for USBStreamer. It seems to me that the link you posted was about another miniDSP product.
Their forum seemed active, I am sure author of the device would be willing to help.

Are there possibly any settings/configurations in ALSA that can be set to ignore? I found something in this thread that may be of use, but I can't find the the file "customdefines.h" anywhere in my system...
I do not think there is any alsa setting to help you. I am afraid you will need to recompile the alsa driver with the mixer handling part commented out.

OTOH it is not so complicated. First I would try the latest alsa driver, using takashi's tree and building script Compilation procedure from git/tiwai/sound-2.6.git . If it does not help, modify the corresponding file and re-build the driver.
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Old 21st February 2013, 11:05 PM   #12
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Originally Posted by Crumboo View Post

The listed devices is the card built in the motherboard and the USB card isn't listed here. When I unplug the USB card and plug it in again I get the following:

[82786.942036] usb 1-5: new high-speed USB device number 6 using ehci_hcd
[82787.071186] usb 1-5: New USB device found, idVendor=2752, idProduct=0016
[82787.086003] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[82787.101001] usb 1-5: Product: USBStreamer
[82787.115857] usb 1-5: Manufacturer: miniDSP
[82787.130677] usb 1-5: SerialNumber: 0000
[82788.059947] usbaudio: unit 51: unexpected type 0x09
[82788.074690] snd-usb-audio: probe of 1-5:1.0 failed with error -5
Any suggestions?

HI, do you have a /etc/modprobe.d/alsa-base.conf file? if so could you open it and print it here, it could be that your soundcard is on a black list
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Old 22nd February 2013, 06:36 AM   #13
phofman is offline phofman  Czech Republic
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Join Date: Apr 2005
Location: Pilsen
You can blacklist modules, not individual soundcards supported by the module. The snd-usb-audio module is clearly loaded, it just does not understand a specific format it gets from the usb device and refuses to continue. Either upgrading to newer snd-usb-audio or "convincing" the device not to send such data is the way to go.
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Old 22nd February 2013, 11:23 AM   #14
Crumboo is offline Crumboo  Sweden
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Join Date: Dec 2007
Hi and thanks again for the advice. It doesn't seem to be possible to change the firmware of the card and the manufacturer isn't relly helpful either (there is no official support for linux). So for now I run it on windows instead and will maybe give it another go on linux in the future. Unfortunately I can't find any other interface that supports multichannel bidirectional (in and out) I2S-USB conversion out there...
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Old 19th March 2013, 04:58 PM   #15
phofman is offline phofman  Czech Republic
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My 2 cents the bugfix for the new miniDSP firmware using unknown unit type is coming soon

[alsa-devel] [PATCH] ALSA: usb: Parse UAC2 extension unit like for UAC1
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Old 21st October 2013, 09:13 AM   #16
mwyss is offline mwyss  Switzerland
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Location: Switzerland
Default Any news?


Does the minidsp usbStreamer work now with brutefir?

Any link to a project?

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Old 21st October 2013, 04:57 PM   #17
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Join Date: Jan 2013
Location: Oregon City, Oregon
I'm coming to your conversation a little late, but I had exactly the same error message implementing MPD/ ALSA, etc on Ubuntu on a PC. The problem was that the INPUT to the sound card had a different number of channels than the device name I was using for the sound card. I was sending 4 channels to a 5.1 sound card. Once I set Alsa to send 4 channels to a 4.0 sound card device, all worked well, or 6 channels to the 5.1 sound card device....

If you like, check my post #2 here: Xover with software : async DSP or Sync PC
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Old 24th February 2014, 06:45 PM   #18
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Join Date: Feb 2014
Location: Kållered
Hi Mattias, just found this thread some days ago. It think it is an excellent idea, I have exactly the same..! Could you figure it out how to map the channels? I have the MiniStreamer and 2*4 MiniDSP-kits that I will try to do a "proof of concept" with before I buy the USBStreamer and the 8*8 MiniDSP. Rgs Mikael
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