http://bugzilla.kernel.org/show_bug.cgi?id=5832





------- Comment #46 from [EMAIL PROTECTED]  2007-11-12 03:41 -------
I was wrong, it's not the status.
I just tried on a machine with parallel port.
Switching to EPP in BIOS shows a PNP0400 device switching to ECP shows a
PNP0401 device in /sys/devices/pnp0/*/id

How pnpacpi devices are registered is rather complicated :) I need to have a
more detailed look somewhen, I think I at least half way got it now...

I expect now, that the ACPI parallel port BIOS implementation is just a
template used by vendors for a lot of machines without any testing.
I could imagine vendors disabled (e.g. in this case DMA) on broken machines in
PNPBIOS tables, but not in ACPI BIOS tables in order to make it work.

Therefore IMO patch in comment #42 should be preferred (maybe this should be
embedded into i386 define only, or does it make sense to disable pnpacpi on
IA64 or x86_64?).

Dane, could you also attach dmidecode output, pls.


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