Re: [PATCH v2] acpi: Fix regression where _PPC is not read at boot even when ignore_ppc=0

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On Mon, 20 Apr 2009, Thomas Renninger wrote:
> On Monday 20 April 2009 07:13:51 Len Brown wrote:
> > FYI,
> > Thanks to Ebay, I now have a T60:-)
> Hmm, Lenovo sold a lot different machines as T60.

There are only two types as far as the firmware is concerned: widescreen and
non-widescreen.

However, the older BIOS (non-widescreen) had a major version bump, so
machines with outdated firmware can have quite a different BIOS.

> I found an acpidump of a T60 here without any _PPC function
> at all.
> 
> > and so i put the DSDT here:
> > http://bugzilla.kernel.org/show_bug.cgi?id=13139
> > 
> > I'll poke at this in more detail soon...
> Ingo, can you place yours somewhere too, please.
> This one should be taken into account for _PPC code changes
> as it seem to implement some corner case.

It is probably worth upgrading the T60 after you got all the relevant
information (dmidecode, full acpidump), and check again with the latest
firmware.

Here are the links with instructions:
http://www.thinkwiki.org/wiki/BIOS_Upgrade

and a table of links for the firmware itself (get the CD versions to flash
without Windows):
http://www.thinkwiki.org/wiki/BIOS_Upgrade_Downloads#T_Series

Also, if you guys do collect that info (dmidecode, full acpidump), I'd
appreciate if you could send them my way in private.  They often prove
useful for thinkpad-acpi work...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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