Re: need some info about tascam US-144mkII and driver snd-usb-us122l

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On 05/20/2014 12:08 AM, jean-noël chardron wrote:
> 
>     Also, I the sound card is a high-speed USB device, so you certainly need
>     ehci_hcd. Which error did you see?
> 
> 
>     Daniel
> 
> t seems that there is a constraint on the usb.. the driver is only in
> usb 1.1 even if the card is in usb 2.0
> the initial log is :
> [44038.762643] usb 1-5: New USB device found, idVendor=0644, idProduct=8020
> [44038.762653] usb 1-5: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [44038.762661] usb 1-5: Product: US-144 MKII
> [44038.762667] usb 1-5: Manufacturer: TASCAM
> [44038.762674] usb 1-5: SerialNumber: no serial number
> [44038.849752] disable ehci-hcd to run US-144 
> [44038.849772] disable ehci-hcd to run US-144 
> [44038.849808] usbcore: registered new interface driver snd-usb-us122l

Ah, right, now I remember. The driver is not compatible to your
hardware, and nobody knows what needs to be done in order to make it
work. Same goes for other models such as the TASCAM US-1800. These
devices use a proprietary protocol, undisclosed by the vendor.

If you're up for reverse-engineering the protocol, that'd be your chance
to get involved :) If you're not, I think there's little hope anything
will happen on this topic any time soon.


Daniel


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