Comment 1 for bug 419873

I confirm this bug. Same problem with my Brother MFC 620CN

I tried
sudo apt-get remove cpus
sudo apt-get install cpus

but this bug persist

/dev/usb/lp0 is missing

ls /dev/usb*
/dev/usbdev1.1_ep00 /dev/usbdev2.2_ep06 /dev/usbdev3.1_ep00
/dev/usbdev1.1_ep81 /dev/usbdev2.2_ep08 /dev/usbdev3.1_ep81
/dev/usbdev2.1_ep00 /dev/usbdev2.2_ep82 /dev/usbmon0
/dev/usbdev2.1_ep81 /dev/usbdev2.2_ep84 /dev/usbmon1
/dev/usbdev2.2_ep00 /dev/usbdev2.2_ep85 /dev/usbmon2
/dev/usbdev2.2_ep01 /dev/usbdev2.2_ep87 /dev/usbmon3
/dev/usbdev2.2_ep03 /dev/usbdev2.2_ep89