Thread: usb to lpt adapter and printer problem

hi.

i've usb lpt adapter connect esc/pos printer. adapter detected correctly , installed under /dev/usb/lp0. , i've tested 2 different adapters same results, 1 hq, , other sunix.

here @ dmesg:

[ 16.056665] usblp0: usb bidirectional printer dev 2 if 0 alt 1 proto 2 vid 0x067b pid 0x2305
[ 16.056715] usbcore: registered new interface driver usblp

problem printers don't know why. printer connect cables, , using 'lpinfo -v' can see it, after can use cups install printer , print jobs.
other printers doesn't appear 'lpinfo -v', , cups never install printer.
i've tried on cups set manually uri printer, no luck also, jobs never go out printer.

after reading see linux when connect cables, , when installing /dev/usb/lp0 device, ask printer major , minor device numbers. , i've seen printers doesn't work when viewing 'ls -l /dev/usb/' have minor number set 0. here example:

crw-rw---- 1 root lp 180, 0 2011-06-19 15:22 lp0

question if there way force device number hand, because can see, isn't set, , think because of can't use printers.
or if have idea of can more, grateful

i've tested on different machines , different versions of ubuntu, 9.04, 9.10, 10.04. , same results on all.

best regards

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Installation & Upgrades [ubuntu] usb to lpt adapter and printer problem

Ubuntu