hybrid-graphics-linux team mailing list archive

[Eric Appleman <erappleman@xxxxxxxxx>]

On 06/21/2011 04:22 AM, Albert Vilella wrote:
> I only went as far as finding a _PRW method for the PEGP, but we need
> someone to have a look at the DSDT and suggest possible methods for
> on/off switching of the ATI card:
>
>              Device (PEGP)
>              {
>                  Name (_ADR, Zero)
>                  Name (_PRW, Package (0x02)
>                  {
>                      0x09,
>                      0x04
>                  })
>              }
>
> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/312756/+attachment/2176634/+files/DSDT.dsl
>
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Before:

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 Device 
[1002:6740] (prog-if 00 [VGA controller])

After:

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 Device 
[1002:6740] (rev ff) (prog-if ff)

ATI device is powered down, as per the prog-if ff.

- Eric