parport problems in 2.4.[9,10]

From: Binx Bolling (
Date: Mon Oct 08 2001 - 22:07:54 EST

I can't seem to get my HP DeskJet 932C to work over the parallel port under
kernels 2.4.9 and 2.4.10. Not sure about earlier kernels. When the lp
modules loads by default, no interrupt is selected:

parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,ECP]
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
parport0: Printer, HEWLETT-PACKARD DESKJET 930C
lp0: using parport0 (polling).
In this case, printing proceeds, but at a glacial pace, something like
When I specify insmod parport_pc irq=7, printing goes quickly, but the
printout gets garbled and leaves the printer in a funky state. When I do
insmod parport_pc irq=7 dma=3, once again the printer works but at
apainfully slow speed. Specifying the dma option also triggers lots of
errors from dmesg:

DMA write timed out
parport0: FIFO is stuck
parport0: BUSY timeout (1) in compat_write_block_pio
spurious 8259A interrupt: IRQ7.

Seems like interrupt driven FIFO output is failing somehow, so it falls back
to polling mode. I can find no interrupt conflict with other devices in the

I have checked in my BIOS to make sure that ECP mode is enabled with IRQ7
and DMA3. I do have CONFIG_PARPORT_PC_FIFO enabled.

What do I try next? Any help would be greatly appreciated.


Get your FREE download of MSN Explorer at

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Mon Oct 15 2001 - 21:00:22 EST