[gentoo-user] Can't detect printer hp 840c on parallel port

[vasya]

Hi. Here some problem - can't connect printer hp 840c on parallel port LPT1.
Necessary kernel modules I've enabled. But CUPS by foomatic db or hplip by
their own drivers can't detect this printer. Hplip tells me that "error: No
device selected/specified or that supports this functionality." but printer
on LPT port. CUPS can add this printer but can't print. How I can resolve it
and what information I need to show you? Version of hplip - 3.9.4b-r1