usbaudio.c:771:
cannot submit datapipe for urb 2, err = -28
This is a kernel bug; it thinks that there isn't enough bandwidth
left.
Disable CONFIG_USB_BANDWIDTH in the kernel configuration.
Thanks for the tip. I've recompiled the kernel with
CONFIG_USB_BANDWIDTH disabled. Now jackd does not crash but there is no
sound. Playing sound through ALSA with non-jack applications still
works OK.
Here's the output from /var/log/syslog:
Jul 26 09:36:51 localhost kernel: usb 2-1.2: new full speed USB device
using uhci_hcd and address 4
Jul 26 09:36:52 localhost usb.agent[7676]: snd-usb-audio: already
loaded
Jul 26 09:36:52 localhost usb.agent[7676]: audio: blacklisted
Jul 26 09:36:52 localhost udev[7769]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 51 applied, 'pcmC1D0p' becomes
'snd/%k'
Jul 26 09:36:52 localhost udev[7769]: creating device node
'/dev/snd/pcmC1D0p'
Jul 26 09:36:52 localhost udev[7777]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 51 applied, 'pcmC1D0c' becomes
'snd/%k'
Jul 26 09:36:52 localhost udev[7777]: creating device node
'/dev/snd/pcmC1D0c'
Also the USB MIDI interface seems to have stopped working with this kernel.
Thanks for your help.
Peter Butler
