[juneau-lug] Re: HP Pavilion dv9000z

  • From: James Zuelow <e5z8652@xxxxxxxxxx>
  • To: juneau-lug@xxxxxxxxxxxxx
  • Date: Wed, 10 Jan 2007 11:36:38 -0900

I've got this set up almost perfectly now -- the headphone jack doesn't work, 
and that's it as far as I can tell.  For now I am using the iommu=off boot 
argument.  This is based off of a post to LKML from a user who actually 
commented out some sections in the IOMMU code that dealt with nVidia nForce 
chipsets.  I thought the boot option was less work.

When you're googling for boot arguments, it pays to actually read the 
kernel-parameters.txt (and in my case the x86_64-boot.txt) from the kernel 
source.  For example, at one point I had turned on pci=usepirqmask.  However 
the description for that in kernel-parameters.txt syas that it has no effect 
if ACPI is routing interrupts.  Hmm.  So if you use that argument without 
also specifying acpi=noirq (or acpi=off, etc) you might as well have not 
specified anything.  Since turning off acpi also turned off sound, wireless 
and powernow support, I had left acpi on and didn't know about the acpi=noirq 
option.  I wonder if it might not be a good idea to put the latest stable 
kernel parameters (from 2.6.19.1 right now) on the web site for the benefit 
of other googleites.  Not all of the options are explained fully, but there 
are references to the full descriptions buried elsewhere in the kernel 
source.  I know it would have helped me.

Next task - find a hard drive caddy for the second drive bay.  Apparently 
these are worth their weight in gold.

James
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