hybrid-graphics-linux team mailing list archive

[Dawid Lorenz <dawid@xxxxxxxxx>]

On 8 February 2011 00:23, Michal Kottman <k0mpjut0r@xxxxxxxxx> wrote:

> On Mon, 2011-02-07 at 22:21 +0000, Dawid Lorenz wrote:
> > Basically, ./test_off.sh script "works!" on different part of the test
> > in my case but I'm not sure what does that mean, really. Could someone
> > explain what these acronyms (ie. \_SB.PCI0.P0P1.PEGP._OFF) exactly
> > mean?
>
> They are the ACPI method names, that are used on various Optimus-enabled
> systems to turn off the GPU. Because there is no standardized name for
> this (every vendor uses his own ACPI methods, some even cannot be turned
> of using ACPI), we have to to call every single method name collected on
> this mailing list, until one available on the system is found.
>
> The 'works!' does not necessarily mean that the battery rate will be
> lower - just that the method was found, and calling it resulted in no
> error, therefore it "works". It should probably deserve a better name
> and reporting, but at the time I wrote it, it was used just for testing,
> hence the name: "test_off.sh" :)


Thank you for explaining this. :)

-- 
Dawid 'evad' Lorenz * http://dawid.lorenz.co

null:// I haven't lost my mind - it's backed up on disk somewhere