Re: CUPS, HP LaserJet 4L; won't print

[Geordie Birch <geordie@tao.ca>]

said nate (on 2003-03-08),

> also be sure nothing else is using the port
> lsof | grep /dev/lp

Nothing else seems to be using it.

> modprobe parport irq=7 io=0x378
> (I think thats the right module, either that or maybe its parport_pc..)
>
> 7 is the most commonly used IRQ for parallel ports in my experience.

The BIOS is in fact set for the parallel port to be io=0x378 irq=7.

I recompiled parport, parport_pc, lp as modules, rebooted, and tried a
variety of settings for parport_pc:

	insmod parport_pc irq=none
	insmod parport_pc io=0x378 irq=none.
	insmod parport_pc io=0x378 irq=7.

When printing from localhost:631/printers I get the same results for
all three configurations:  "Test page sent".  No printing happens and
no error message is given.

Running

$ watch -n 1 /proc/sys/dev/parport/parport0/devices/active

shows that the device using the parallel port changes from "none" to "lp"
to "none" shortly after attempting to print a "Test page."

Stumped (and wishing I had a spare cable and a known-to-work printer.)

Geordie.