Re: [Fwd: Re: long-term regression - Parallel Port broken?]

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> should I test the two individually? or just plan on useing both from now 
> on?
> I normally disable PnP (both ISA and PCI), should I leave it enabled with 
> the newer kernels and this motherboard?

Ultimately, you should have CONFIG_ACPI=y and CONFIG_PNPACPI=y, and you
should not have to boot with "noisapnp" or "pnpacpi=off".  My guess is
that you only need "pnpacpi=off" to work around the current problem.

At http://linux.lang.hm/linux, I see dmesg logs (with tons of
kobject debug that's useless to me) from 2.6.22-rc4.  It would
be useful to have the log from 2.6.22-rc4 with "pnpacpi=off"
(which I expect to work), so we could compare it with the
"2.6.22-rc4.dmesg" log, which I assume a non-working one.

Linux PNPACPI currently doesn't manage resources quite the same way
Windows does, and that might account for this problem.  You might
try this:

  - boot without "pnpacpi=off" (leave PNPACPI enabled)
  - before loading the parport_pc driver, do this:
    # echo "disable" > /sys/devices/pnp0/00:0a/resources
    # echo "enable" > /sys/devices/pnp0/00:0a/resources
  - load the parport_pc driver

That should cause PNPACPI to run _PRS and _SRS.  Many BIOSes report
that devices are enabled, but don't actually enable them until _SRS
is called.

Bjorn

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