Comment 15 for bug 793244

You can try to get a backtrace as follows:

Make sure you have the package cups-db installed and it matches the version of your installed cups package.

Run the following commands in a terminal window:

sudo -s
ulimit -c unlimited
cat <large plain text file> | DEVICE_URI='usb://HP/LaserJet%206MP' /usr/lib/cups/backend/usb 1 1 1 1 ''

If you get a segmentation fault or any other crash saying "core dumped", run

gdb -c core /usr/lib/cups/backend/usb

As soon as you get the prompt inside dbg, run

backtrace full

and paste the output here.

See also

https://wiki.ubuntu.com/Backtrace