One more update,
I ran kernel 2.6.28 with dsdt from initramfs support (too lazy to
compile my own kernel...)
I modified the _SP3 method I attached above, and removed the first
condition (line 15029), and its corresponding closing bracket.
If (LEqual (P3MO, 0x01)) {
}
After removing the lines, I ran
echo '\_SB.PCI0.RP00.VGA._PS3' > /proc/acpi/call
and miraculously my power consumption went down from 20W to 12W.
(Horay! I can actually get eight hours of battery life now!)
I've got a few questions for anyone with even a remote knowledge of
ACPI.
First of all, I have thus-far assumed that LEqual stands for "Less than
or equal to". Under this assumption, I don't understand how P3MO would
ever be greater than 0x01 because it isn't changed to anything but zero
or one.
This is every line I found P3MO on...
14781: Name (P3MO, 0x00)
14885: Store (One, \_SB.PCI0.RP00.VGA.P3MO)
14889: Store (Zero, \_SB.PCI0.RP00.VGA.P3MO)
15157: Store (0x00, P3MO)
Maybe someone could enlighten me, or should I post this somewhere else?
Any help would be greatly appreciated.
--
support graphics card hot switch
https://bugs.launchpad.net/bugs/312756
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