This model seems to come with these two methods for switching the
discrete card off/on:
External (\_SB_.PCI0.PEG0.PEGP._OFF, MethodObj) // 0 Arguments
External (\_SB_.PCI0.PEG0.PEGP._ON_, MethodObj) // 0 Arguments
echo '\_SB_.PCI0.PEG0.PEGP._OFF' > /proc/acpi/call
echo '\_SB_.PCI0.PEG0.PEGP._ON_' > /proc/acpi/call
I am also guessing that there are 3 voltage levels for the card, LVL0,
LVL1 and LVL2, that can be chosen with acpi calls:
Method (SGPO, 2, Serialized)
{
ShiftRight (Arg0, 0x07, Local3)
And (Arg0, 0x7F, Arg0)
If (LEqual (Local3, Zero))
{
Not (Arg1, Local3)
And (Local3, One, Local3)
}
If (LLess (Arg0, 0x20))
{
ShiftLeft (Local3, Arg0, Local0)
ShiftLeft (One, Arg0, Local1)
And (\_SB.PCI0.PEG0.PEGP.LVL0, Not (Local1), Local2)
Or (Local2, Local0, \_SB.PCI0.PEG0.PEGP.LVL0)
}
...
On Fri, Aug 26, 2011 at 8:34 PM, Stefan Dröge <ste...@sdroege.de> wrote:
> Hi, I'm Stefan, and I'm new on the mailinglist.
> Here is something about my Hardware:
>
> stefan@TE520:~/acpiinfo$ sudo dmidecode -s system-product-name && sudo
> dmidecode -s system-version
> 1143CTO
> ThinkPad E520
> stefan@TE520:~/acpiinfo$ lspci -vnnn | perl -lne 'print if
> /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA
> 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd
> Generation Core Processor Family Integrated Graphics Controller
> [8086:0126] (rev 09) (prog-if 00 [VGA controller])
> 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc NI
> Whistler [AMD Radeon HD 6600M Series] [1002:6741] (prog-if 00 [VGA
> controller])
>
> I also posted my DSDT file to the bugreport mentioned on
> http://linux-hybrid-graphics.blogspot.com/
>
> Regards, Stefan!
>
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