I put this on the Foxconn feedback page for my incident :
--------------
I have installed the new bios that came available. The bios is still reporting :

Aug 21 22:48:28 home kernel: [ 0.520201] ACPI: PCI Interrupt Routing Table 
[\_SB_.PCI0._PRT]
Aug 21 22:48:28 home kernel: [ 0.520487] ACPI: PCI Interrupt Routing Table 
[\_SB_.PCI0.PCE2._PRT]
Aug 21 22:48:28 home kernel: [ 0.520610] ACPI: PCI Interrupt Routing Table 
[\_SB_.PCI0.P0PC._PRT]
Aug 21 22:48:28 home kernel: [ 0.523898] ACPI: PCI Interrupt Link [LNKA] (IRQs 
4 7 *10 11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524025] ACPI: PCI Interrupt Link [LNKB] (IRQs 
4 7 10 *11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524148] ACPI: PCI Interrupt Link [LNKC] (IRQs 
4 7 *10 11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524269] ACPI: PCI Interrupt Link [LNKD] (IRQs 
4 7 *10 11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524390] ACPI: PCI Interrupt Link [LNKE] (IRQs 
4 7 *10 11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524512] ACPI: PCI Interrupt Link [LNKF] (IRQs 
4 7 *10 11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524633] ACPI: PCI Interrupt Link [LNKG] (IRQs 
4 7 10 *11 12 14 15)
Aug 21 22:48:28 home kernel: [ 0.524754] ACPI: PCI Interrupt Link [LNKH] (IRQs 
4 7 10 11 12 14 15) *0, disabled.
Aug 21 22:48:28 home kernel: [ 0.524871] ACPI Warning (tbutils-0217): Incorrect 
checksum in table [OEMB] - F0, should be E1 [20080926]
Aug 21 22:48:28 home kernel: [ 0.524902] ACPI: WMI: Mapper loaded

with this message i searched and came to this interesting post :
http://ubuntu-virginia.ubuntuforums.org/showthread.php?t=869249

so i tried to disassemble the bios and found this code :
If (MCTH (_OS, "Linux"))
{
Store (One, Local0)
}

much in the same line as described in the article. as the solution on the page 
does not work for me (the generated code does not compile) I have to check out 
how to solve that, any pointers are appreciated.
-----------

As the original forum is of last year, and they do fix stuff for Vista
relating to exactly the same stuff (so fixing for Linux should be rather
trivial) It looks like they still do not take Linux any more serious
than a year ago.

on iasl not working when i run `iasl -dc dsdt.dat` i get error 4068.
when i try to compile a decompiled piece of code i get a lot of errors.
I'll run by a iasl forum or something.

-- 
BIOS does not provide ACPI _PSS objects in a way that Linux understands, 
Foxconn A7GM-S 2.0
https://bugs.launchpad.net/bugs/363868
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