Re: acer aspire 5315, Ubuntu 2.6.22-14-generic, kernel says send dmidecode, acpi not working correctly

[Len Brown <lenb@kernel.org>]

Thanks for the acpidump.

It looks like OSI(Linux) is a NOP on this box.
so you shouldn't notice any difference between acpi_osi=Linux
and acpi_osi=!Linux.

-Len

The write to OSYS is a NOP, as it quickly gets over-written.
Looks like Acer writes the value 0x70 the (debug?) port at 0xB3,
but otherwise OSI(Linux) will have no effect on this system.



               If (CondRefOf (_OSI, Local0))
                {
                    If (_OSI ("Linux"))
                    {
                        Store (0x03E8, OSYS)
                        OSMI (0x70)
                    }

                    If (_OSI ("Windows 2006"))
                    {
                        Store (0x07D6, OSYS)
                    }
                    Else
                    {
                        Store (0x07D1, OSYS)
                    }
                }
                Else
                {
                    Store (0x07D0, OSYS)
                }
...
    OperationRegion (SMIO, SystemIO, 0xB2, 0x02)
    Field (SMIO, ByteAcc, NoLock, Preserve)
    {
        APMC,   8,
        APMD,   8
    }
...
    Method (OSMI, 1, NotSerialized)
    {
        Store (Arg0, APMD)
        Store (0xB2, APMC)
        Stall (0xFF)
        Stall (0xFF)
        Stall (0xFF)
        Stall (0xFF)
        Stall (0xFF)
        Stall (0xFF)
    }