Hi; 17 Ara 2007 Pts tarihinde, Clemens Ladisch şunları yazmıştı: > 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. Thanks for the pointer :), i tried 2.6.24-rc5 and it works fine, so i backported needed bits to 2.6.18 and everything works as expected. > HTH > Clemens Cheers -- S.Çağlar Onur <caglar@xxxxxxxxxxxxx> http://cekirdek.pardus.org.tr/~caglar/ Linux is like living in a teepee. No Windows, no Gates and an Apache in house!
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