hybrid-graphics-linux team mailing list archive

[Alexey Cherepnev <acherep@xxxxxxx>]

@Daniel

hello,
have you had any problems since you switched optimus off? I'm going to try your method on my Z360 :)

best,
Cherep


Fri, 18 Feb 2011 21:41:15 +0100 письмо от Daniel <daniel@xxxxxxxxxxxxx>:

> 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
> 
> _______________________________________________
> Mailing list: https://launchpad.net/~hybrid-graphics-linux
> Post to     : hybrid-graphics-linux@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~hybrid-graphics-linux
> More help   : https://help.launchpad.net/ListHelp