S.Çağlar Onur wrote: > I'm using ALSA 1.0.15 on 2.6.18. The MIDI device is detected and the needed > modules hotplugs itself as soon as i plug the cable, but I'm not getting any > data via the raw MIDI port or sequencer ports. Here is the output from dmesg > when plugging the device: > > usb 2-1: new low speed USB device using uhci_hcd and address 7
The USB Audio specification does not allow low speed USB MIDI devices because MIDI transfer must use USB bulk transers, but bulk transfers do not exist in low speed mode. The 1.0.15 driver has a workaround to change the transfer type to interrupt transfers, ... > ALSA usb/usbmidi.c:170: usb_submit_urb: -22 ... but it seems your kernel does not allow interrupt transfers on bulk endpoints. Try a different kernel. HTH Clemens ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
