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





------- Comment #41 from [EMAIL PROTECTED]  2007-11-11 07:32 -------
Sorry it is ecp_probe (modinfo should show you):
ecp_probe=

Another test revealed that it's probably not that easy -> the correct ACPI
device seem to get used.

You could also add:
CONFIG_PNP_DEBUG=y
and
add a
#define DEBUG 1
in drivers/parport/parport_pc.c
between:
#undef DEBUG
and
#ifdef DEBUG

and a:
#define DEBUG_PARPORT 1
in include/linux/parport_pc.h
after:
#include <asm/io.h>

If you run this with PNPBIOS and PNPACPI, I think we should have a all debug
info that could be "quickly" fetched for the parallel device.

But this might also not bring us further...
PNPACPI BIOS parts export different settings than PNPBIOS parts and I am pretty
sure the parsing etc. is correct.

Maybe this machine is only supported with PNPBIOS and PNPACPI simply returns
copy and pasted, wrong ACPI code that never was tested (supported Windows OS
did only use PNPBIOS code in old times?).
In this case pnpacpi=off is the only workaround that makes sense, maybe a
blacklist could be added to activate this on all machines, which BIOS is older
than xy like we do with acpi in general?


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