On Mon, 2014-08-04 at 23:11 +0400, Vladimir Mosgalin wrote: > > IIRC the plug'n'play audio USB driver is limited to USB1, for USB2 > > proprietary drivers are needed. But perhaps I'm confusing something. > > Assumed I shouldn't be mistaken, then perhaps the bandwidth really is to > > small. > > Can't be true.. Here is example of USB 2.0 audio device (bcdUSB: 2.00), > completely plug and play: Yes, I didn't remember correctly, for example: "The UA-55 is not USB-2 class compliant. It needs a dedicated driver and does not [yet?] work with GNU/Linux. see http://wiki.linuxaudio.org/wiki/current_audio_gear#roland_-_quad-capture_ua-55_usb-2"; - http://lists.linuxaudio.org/pipermail/linux-audio-user/2012-September/086758.html OTOH "USB Compliance USB specification 2.0 full speed-compatible USB audio device class 1.0-compliant" - http://www.cmedia.com.tw/ProductsDetail/page-p/C1Serno-53/C2Serno-54/C3Serno-0/PSerno-47.html Perhaps the devices aren't recognised as 2.0 devices. I don't know how much channels duplex for unsynced USB devices do work sharing one USB, USB 1 or 2. An expert should chime in. Does "2.0 full speed-compatible" mean "USB-2 class compliant" or is a special driver needed? ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
