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[Bug 179702] HP nx9420 ACPI BIOS Bug, _PPC always returns 1 instead of 0
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 20 Oct 2006 06:51:21 -0600 (MDT)
  • Message-id: <20061020125121.4044B25C889@xxxxxxxxxxxxxxxxxxxxxx>

------- Comment #84 from trenn@xxxxxxxxxx 2006-10-20 06:51 MST -------
This bug gets my quote for the most weird bug of the year...

Phillipe: Ignore the "power management: no" flag, it doesn't say much.

found something...:
According to Vojtech the mouse driver uses IO address 0x60 and 0x64 and
In ACPI namespace the mouse device is declared with IO address 0x60 and 0x64
and irq1.

On i386 we have PNP and PNP_ACPI compiled in.
Therefore I expect for the ACPI device with PNP0303 id, the
drivers/input/serio/i8042-x86ia64io.h code is kicking in.

Could you try boot param:
i8042.nopnp=1 (this should work?)

if above works, this one might also work without above option?:
i8042.noloop=1 (for this one already a blacklist with compaqs exist, adding
nx9420 would be a easy fixup)

as this is about unloading the module, this might also help?:

with the original SLE 10, 10.1 kernel.
Hopefully this is it or I begin to run out of ideas...

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