I have installed OpenSuSE 11.1 for x86_64. And I have hp3820. I tried to find my printer through Yast->Hardware->Printer. It found nothing.
I tried to find it through CUPS web-panel. But there is nothing matched parallel port.
There is a file lp0 in /dev/ dirctory. But the command
echo 'test' > /dev/lp0
will output
bash: /dev/lp0: No such device or address
I checked the cable connection to motherboard. It is OK.