sony-vaio-z-series team mailing list archive

[John Evans <bucksteep@xxxxxxxxx>]

On Mon, Apr 25, 2011 at 6:35 PM, Simon Brown <smb@xxxxxxxx> wrote:


> I thought others were having some success with a kernel boot param of
> something like acpi_os="" Check the list archive.


We really need to be editing the wiki pages (
http://linux-on-sony-vaio-z.wikispaces.com/) so people don't have to comb
through months of uncertain conversation fragments.

I (and others) have found the "acpi_osi= " boot parameter to be useful with
the vanilla linux-2.6.38-rc3 kernel on Ubuntu 10.10-amd64. It makes the NEXT
boot detect the position of the three-way switch. (That is, it goes into
effect only at shutdown.) This is with no changes to the BIOS.

This and other details are on the Wiki page:
    http://linux-on-sony-vaio-z.wikispaces.com/VPCZ1290X
(I added the section "... as long as you do the following things(!)" to list
the things that I thought were FAR from obvious -- esp. the "kpartx" trick
for detecting the RAID0 drive.)

  - John E.