hybrid-graphics-linux team mailing list archive

[Jos Hickson <jos.hickson@xxxxxxxxx>]

Hi Pierre,

I might be wrong but I think the _DSM call is what actually turns the nvidia
card off; the other calls are checks to see if it is off.  So as the _DSM
call seems to work for you, you might be okay.  What happens to the battery
usage?

Jos

On 5 May 2011 13:41, Pierre Chifflier <pollux@xxxxxxxxxx> wrote:

> Hi,
>
> My laptop is a Dell XPS 17 with nvidia GT555M, and at the moment I have
> no success in trying to switch the nvidia card off.
>
> I am using current Debian unstable/sid (kernel 2.6.38-2-amd64) and
> latest acpi_call.ko from the git repository.
>
> I tried several commands, all of them failed with an AE_NOT_FOUND or
> similar.
> I also tried the dell702X.sh script from Jos Hickson (
> https://lists.launchpad.net/hybrid-graphics-linux/msg00663.html ) which
> fails:
> $ sudo ./dellL702X.sh off
> _DSM 0x80000001
> _PS3 Error: AE_NOT_FOUND
> Dell L702X Optimus appears to be Error: AE_NOT_FOUND
>
> syslog shows:
> May  5 14:36:32 laptop kernel: [16269.939846] acpi_call: Calling
> \_SB.PCI0.PEG0.PEGP._DSM
> May  5 14:36:32 laptop kernel: [16269.939967] acpi_call: Call
> successful: 0x80000001
> May  5 14:36:32 laptop kernel: [16269.942746] acpi_call: Calling
> \_SB.PCI0.PEG0.PEGP._PS3
> May  5 14:36:32 laptop kernel: [16269.942768] acpi_call: Cannot get
> handle: Error: AE_NOT_FOUND
> May  5 14:36:32 laptop kernel: [16269.945422] acpi_call: Calling
> \_SB.PCI0.PEG0.PEGP._PSC
> May  5 14:36:32 laptop kernel: [16269.945439] acpi_call: Cannot get
> handle: Error: AE_NOT_FOUND
>
> Here are some more details:
> # dmidecode -s system-product-name
> Dell System XPS L702X
> # lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA
> 01:00.0 VGA compatible controller [0300]: nVidia Corporation Device
> [10de:0dcd] (rev a1) (prog-if 00 [VGA controller])
>
> I have attached the DSDT and SSDT files (oddly, there are 3 SSDT files).
>
> Is there any way to make this card work (or switch it off) ?
>
> Thanks,
> Pierre
>
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