Re: 2.6.16-rc5: known regressions [TP 600X S3, vanilla DSDT]

[Sanjoy Mahajan <sanjoy@mrao.cam.ac.uk>]

I started subdividing the _TMP method, and found that

hangs: -AC0 (as reported in the last email)
okay:  -AC0-TMP (also in last email)

but

okay: -AC0-one line of TMP, by which I mean getting rid of the 
EC0.UPDT() line below:

            Method (_TMP, 0, NotSerialized)
            {
                \_SB.PCI0.ISA0.EC0.UPDT ()
                Store (\_SB.PCI0.ISA0.EC0.TMP0, Local0)
                If (LGreater (Local0, 0x0AAC))
                {
                    Return (Local0)
                }
                Else
                {
                    Return (0x0BB8)
                }
            }

So that's a small change in which having a line means the hang
happens, and not having the line means it goes away.

By the way, I just checked -AC0-TMP and it was okay (no hang).  That
data point is consistent with TMP & (PSV | AC0).

> I found the common code in _PSV and _AC0
>    Store (DerefOf (Index (DerefOf (MODP (0x01)), Local1)), Local0)
> Could you just comment out that?

I will try that right now (leaving TMP as in the vanilla DSDT).

-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.
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