On 04/03/2014 03:12 PM, Anders Genell wrote: > I have a Marian UCON-CX external usb sound card. It is to the best of my > knowledge not class compliant at all. It is not maintained by Marian any > longer, and only supported up to Windows XP, which as of the end of this > week is not maintained itself. > > I have emailed the Marian devs and they will not release a driver for > e.g. Win7/8, nor will they release any code for third party (linux) > developement. > > The sound card is hence basically an expensive paper weight. > > As far as I can guess, the card needs some blob uploaded at startup to > function. I have the original driver disk, but I am unsure if it > contains a complete binary blob, or if there is some MS voodoo going on > as well.
Some cards just hide their class compliant interfaces behind vendor specific descriptors in order to escape the stupidness of the Windows USB stack. Others implement a completely proprietary protocol. Without looking into the communication, it's impossible to tell. > If anyone would like to take a stab at reverse engineering a linux > module for this card, I'd be happy to lend my card. I think a good first step would be to trace the communication between the driver and the card using a software analyzer. Either on the Windows side, or on Linux with usbmon, together with a VM such as VirtualBox. It might be worth the effort, the hardware actually looks quite advanced, according to the specs on their website. Daniel ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
