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Re: acpi_call on Lenovo IdeaPad Z360 - solved


Hi Daniel,

Thanks for the below, much appreciated.

Do you own a 1215N?

What distro are you running?

Word goes around that Ubuntu 11.04 will support the Nvidia card that's in
the 1215N with the nouveau driver.
I'll try this in the near future, but I'm wondering if switching will be
also possible;

As in switching off and back on the Nvidia card and actually use it :)



On 18 February 2011 21:41, Daniel <daniel@xxxxxxxxxxxxx> wrote:

> Hello
> After some fiddling around with parameters in my DSDT and trying to
> understand what peberlein did to get it working with a Asus eeepc 1215n
> ( ==>
> http://linux-hybrid-graphics.blogspot.com/2010/10/calling-acpicall-with-parameters.html
> THANKS! ) I think that I have finally managed to switch off the Optimus
> Graphics on my Lenovo Z360.
> As with the 1215n, acpi_call needs to be called twice:
> The first call is to \_SB.PCI0.P0P2.PEGP._DSM with 4 arguments:
> arg0:   {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,
>        0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0}
> arg1:   0x0100
> arg2:   0x1A
> arg3:   {0x1,0x0,0x0,0x3}
> I don't know if it is really necessary for arg3 to have exactly these
> four values. Looking at the DSDT it seems as if any values could be
> passed to arg3, they aren't even checked in the code (I think...). But
> who cares, it works for me with those values.
> The second call is to \_SB.PCI0.P0P2.PEGP._PS3 and doesn't need any
> arguments. This will switch off the Optimus part.
> If one wants to restart the discrete graphics chip, one has to call
> \_SB.PCI0.P0P2.PEGP._PS0.
> Ok, short form - switch off your Optimus graphics like this:
> echo "\_SB.PCI0.P0P2.PEGP._DSM
> {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0}
> 0x0100 0x1A {0x1,0x0,0x0,0x3}" > /proc/acpi/call
> echo "\_SB.PCI0.P0P2.PEGP._PS3" > proc/acpi/call
> And back on like this:
> echo "\_SB.PCI0.P0P2.PEGP._PS0" > /proc/acpi/call
> By the way, the Z360 does not have a hardware switch built in, so
> no nvidia graphics on linux. But at least power management is
> optimized...
> good luck,
> Daniel
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