Here’s an old thread where a user needs to explicitly configure the parallel port to operate in polling mode rather than interrupt driven mode, so that printing is possible:
I have been trying to set this up on my old system running 12.3 with the same result.
I noticed that it was still configured as lpt0 on the parallel port so I then installed it using the usb cable and it worked.
I then restored the parallel port cable and installed the printer as lpt0 on the 13.2 system which worked ok (as it should).
I then reverted to the usb cable and was able to install it using that. it now prints fine under 13.2.
My only problem now is that my other system does not have a parallel port!
My final solution to this problem was to change distro! Ubuntu, Mint and mageia all worked with no problems. So it seems to be just Opensuse. Shame as I have been using it since v5.1 in 1999. I wanted to keep using the HP 100 as it cost me nothing at all apart from the cable and I have had it for many years. Still that is progress???
Trevor.
Well, use what works for you I guess. Still, after reading this thread again I note that you never did get back with answers to post #17 and and #18 so hard to know where you got to anyway. (Your working configuration in /etc/cups/printers.conf will be relevant if you ever want to try openSUSE again.)