Bug#746760: cups: HP Color LaserJet 2550L has stopped printing "Waiting for printer to become available"

[Steinar Bang <sb@dod.no>]

A little more information: the cups server got a new kernel from
"apt-get dist-upgrade" on April 27 2014, and here are some messages from
/var/log/kern.log: 

Apr 27 21:45:33 doohan kernel: [   13.458593] usb 1-1: New USB device found, idVendor=03f0, idProduct=1c17
Apr 27 21:45:33 doohan kernel: [   13.458716] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 27 21:45:33 doohan kernel: [   13.458810] usb 1-1: Product: hp color LaserJet 2550 series
Apr 27 21:45:33 doohan kernel: [   13.458897] usb 1-1: Manufacturer: Hewlett-Packard
Apr 27 21:45:33 doohan kernel: [   13.458980] usb 1-1: SerialNumber: 00CNHFD21527
Apr 27 21:45:33 doohan kernel: [   13.681474] sd 0:0:0:0: Attached scsi generic sg0 type 0
Apr 27 21:45:33 doohan kernel: [   13.682799] sd 0:0:1:0: Attached scsi generic sg1 type 0
Apr 27 21:45:33 doohan kernel: [   13.683667] sr 1:0:0:0: Attached scsi generic sg2 type 5
Apr 27 21:45:33 doohan kernel: [   13.893619] input: PS/2 Logitech Mouse as /devices/platform/i8042/serio1/input/input2
Apr 27 21:45:33 doohan kernel: [   13.903186] usblp0: USB Bidirectional printer dev 2 if 0 alt 1 proto 2 vid 0x03F0 pid 0x1C17
Apr 27 21:45:33 doohan kernel: [   13.903498] usbcore: registered new interface driver usblp

and then later in the same file (last night, in fact):
May  2 22:35:14 doohan kernel: [435400.159065] usblp0: removed


Here is the output from lsusb:

Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 03f0:1c17 Hewlett-Packard Color LaserJet 2550l