[Bug 12641] ACPI events for ac powere un/plug are not generated for Toshiba Satellite L355

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12641





--- Comment #56 from Adam Pigg <a...@piggz.co.uk>  2009-10-02 19:38:46 ---
\o/

Ive rebooted about 10 times now and can regularly make it work/not work.

Its quite simple really (which is even more frustrating!:)

I checked back through the comments, and read posts on the ubuntu and archlinux
threads, and got pointed to the gentoo wiki on dsdt.  I know ive looked at this
in the past but figured i'd look again.

Then i read about linux ignoring _OSI(Linux), and learned of acpi_osi="".

I disassembled by dsdt, and found the what is at the end of the post.

i set acpi_osi="Linux" on the cmdline, and it now works perfectly.  With this
set i get this message from the kernel:
[    0.000000] ACPI: Added _OSI(Linux)
[    0.104794] ACPI: BIOS _OSI(Linux) query honored via cmdline

as opposed to ACPI: BIOS _OSI(Linux) query ignored.

Ive also tried other values such as "Windows 2001 SP2" and "Windows 2006 SP2",
but these dont work, all i see in the kernel log is that the query for Linux
was ignored.

Anyway, atm im happy, power events are now working.



=======================================================
Snipping from dsdt:

If (CondRefOf (_OSI, Local0))
                {
                    If (_OSI ("Linux"))
                    {
                        Store (0x03E8, OSYS)
                    }
                    Else
                    {
                        Store (0x07D0, OSYS)
                        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 (LNotEqual (OSYS, 0x07D6))
                        {
                            If (_OSI ("Windows 2006 SP1"))
                            {
                                Store (0x07D6, OSYS)
                            }
                            Else
                            {
                                If (_OSI ("Windows 2006 SP2"))
                                {
                                    Store (0x07D6, OSYS)
                                }
                            }
                        }
                    }
                }
                Else
                {
                    Store (0x07D0, OSYS)
                }

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