[linux-audio-user] Sound Blaster Live External USB does not work with jack

[Peter Butler]

>>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