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SubjectRe: ACPI locks hardware devices when it doesn't detect vista
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On Sat, 2009-08-22 at 17:10 +0200, Mario wrote:
> Hi,
>
> I tried to start the system with aspi=off, but as I thought system won't
You mean acpi=off ?
>
> start. It hangs at the same beginning. Probably because RTC and other stuff
> normaly controled by acpi stops working.
Not RTC, but there are plenty of things that can go wrong with acpi=off
Thanks for testing.


Best regards,
Maxim Levitsky
>
> Kind Regards
> Mario
>
> Saturday 22 of August 2009 14:48:30 Maxim Levitsky wrote:
> > Hi,
> >
> > <joke>
> > This should be brought to a Microsoft antitrust case...
> > </joke>
> >
> >
> > Today many notebooks ship with a embedded infrared receiver.
> > In Vista there is new subsystem that decodes these signals.
> > (of course it works only with Microsoft Certificated Remotes (TM)...)
> >
> > The receiver is usually presented to system as a pnp device
> > (using acpi tables)
> >
> > It turns out that some bioses actually use the OSI, ACPI feature of the
> > operation system to detect if running inside Vista. If not they disable
> > the infrared receiver.
> >
> > On my system this it is still tolerable:
> >
> > Device (MIR)
> > {
> > Name (_HID, EisaId ("ENE0100"))
> > Method (_STA, 0, NotSerialized)
> > {
> > If (LGreaterEqual (OSYS, 0x07D6))
> > {
> > If (LOr (And (OTHR, 0x02), And (OTHR, 0x40)))
> > {
> > Return (0x00)
> > }
> > Else
> > {
> > Return (0x0F)
> > }
> > }
> > Else
> > {
> > Return (0x00)
> > }
> > }
> >
> > But not so, on Mairo's system:
> >
> > Device (MIR)
> > {
> > Name (_HID, EisaId ("ENE0100"))
> > Method (_STA, 0, NotSerialized)
> > {
> > If (LAnd (MCIR, LEqual (OSYS, 0x07D6)))
> > {
> > Return (0x0F)
> > }
> > Else
> > {
> > Store (Zero, ^^LPCB.IOR2)
> > Return (Zero)
> > }
> > }
> >
> > .......
> >
> > Method (_WAK, 1, NotSerialized)
> > {
> > .......
> > If (Not (LAnd (MCIR, LEqual (OSYS, 0x07D6))))
> > {
> > Store (Zero, \_SB.PCI0.LPCB.IOR2)
> > }
> >
> >
> > .....
> >
> > Scope (_SB)
> > {
> > Method (_INI, 0, NotSerialized)
> > {
> > If (DTSE)
> > {
> > TRAP (0x47)
> > }
> >
> > Store (0x07D0, OSYS)
> > If (CondRefOf (_OSI, Local0))
> > {
> > If (_OSI ("Linux"))
> > {
> > Store (One, LINX)
> > Store (Zero, ECDY)
> > }
> >
> > If (_OSI ("Windows 2001"))
> > {
> > Store (0x07D1, OSYS)
> > }
> >
> > If (_OSI ("Windows 2001 SP1"))
> > {
> > Store (0x07D1, OSYS)
> > }
> >
> > If (_OSI ("Windows 2001 SP2"))
> > {
> > Store (0x07D2, OSYS)
> > }
> >
> > If (_OSI ("Windows 2006"))
> > {
> > Store (0x07D6, OSYS)
> > }
> >
> > If (LEqual (TPMV, One))
> > {
> > If (LLessEqual (OSYS, 0x07D2))
> > {
> > TRAP (0x49)
> > }
> > }
> > }
> >
> > If (LAnd (MPEN, LEqual (OSYS, 0x07D1)))
> > {
> > TRAP (0x3D)
> > }
> >
> > TRAP (0x2B)
> > }
> > }
> >
> > We have tried to boot the system with acpi_osi="Windows 2006", but it
> > didn't help (kernel log confirmed that this parameter was set)
> >
> > The only explanation I think of is ether his laptop is whitelisted on
> > osi=Linux, or that _SB._INI is called by linux _after_ MIR._STA
> > or that acpi_osi isn't yet in charge when _SB._INI is called.
> >
> >
> > The kernel in question is quite recent kernel, (2.6.30.5 from debian
> > unstable).
> >
> >
> > The only way I managed to 'enable' this device is to
> > do 'sudo setpci -s 00:1f.0 0x88.W=0x701'
> >
> > Or in other words undo the damage done by these ACPI commands.
> >
> > Mairo, can you boot the system with acpi=off, and then poke the cir IO
> > range (0x700-0x703) ?
> >
> >
> >
> > Best regards,
> > Maxim Levitsky
>
>



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