[ltp] Re: [RESEND] [PATCH 2/3] Introduce acpi_root_table=rsdt boot param and dmi list to force rsdt

[Henrique de Moraes Holschuh]

On Mon, 20 Oct 2008, Matthew Garrett wrote:
> On Mon, Oct 20, 2008 at 04:47:54PM -0200, Henrique de Moraes Holschuh wrote:
> > On Mon, 20 Oct 2008, Matthew Garrett wrote:
> > > C state transitions, not S state. Working properly here means not 
> > > hanging the moment ACPI processor power management starts.
> > 
> > I see, but my point remains.  Does a version of Windows that was tested to
> > do C-state transitions on the R50e and R40e even use the XSDT?
> 
> Vista is known to run on the R50e. See 
> http://forums.lenovo.com/lnv/board/message?board.id=R_Series_Thinkpads&thread.id=3467 
> , for instance.

Ok, now one has to wonder whether C-states work, but still the chances that
we are doing something differently than Windows XP/Vista here have gone up a
great deal in my book :-(

If you can describe how to test C-states in Windows, one could try to find
an R50e user to do that test, either in the linux-thinkpad ML, or in the
ThinkPad forums.

I still think a date cutoff line would explain a lot.

-- 
  "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