Can you install the cups-dbg package and then run
ulimit -c unlimited sudo /usr/lib/cups/backend/usb
"usb" will crash and produce a core file.
Run
sudo gdb -c core /usr/lib/cups/backend/usb
and at the prompt of gdb run
bt
and after that
quit
Please post all the screen output here.
Can you install the cups-dbg package and then run
ulimit -c unlimited cups/backend/ usb
sudo /usr/lib/
"usb" will crash and produce a core file.
Run
sudo gdb -c core /usr/lib/ cups/backend/ usb
and at the prompt of gdb run
bt
and after that
quit
Please post all the screen output here.