hybrid-graphics-linux team mailing list archive

["Raghuram.O.S." <raghuramos1987@xxxxxxxxx>]

On Sat, Nov 20, 2010 at 2:19 PM, Michal Kottman <k0mpjut0r@xxxxxxxxx> wrote:

> On Sat, 2010-11-20 at 02:37 -0500, Raghuram.O.S. wrote:
> > On Sat, Nov 20, 2010 at 1:34 AM, David Marsh <dmarsh26@xxxxxxxxxxx>
> > wrote:
> >         As I understand it there are two options :-
> >
> >         1. Install closed source binary driver from NVidia and have
> >         GPU on 100% of the time.
> >
> >         2. Install noveau open source driver and have possibility
> >         of :-
> >             2.1 Intel GMA + NVidia GPU for CUDA/OpenCL.
> >
> > I would like to do 2.1. Could somebody please point me to a howto or
> > something?Thanks!
>
> You're not the only one wanting this option, however, AFAIK there is no
> way yet to do this - Nouveau has no support for CUDA/OpenCL.
>

I mainly want CUDA and option 1 did not work. (i get a black screen).

>
> I was thinking about the following: create a different kernel (or just
> copy the current one, but under different name) to create a new 'uname
> -r' entry in /lib/modules, for example "2.6.35-23-generic" and
> "2.6.35-23-nvidia", and then install the NVidia drivers into
> "2.6.35-23-nvidia" and turn off the NVidia GPU completely in
> "2.6.35-23-generic".
>
> I know how to turn off the NVidia GPU on my Asus K52J laptop right at
> boot time - all you have to do is modify the GRUB kernel boot command
> line and add the following at the end: "acpi_osi=Linux". I am not sure
> if it works for other laptops, but I found this out in my DSDT.
>
> The result would be that at boot time, you could select between the
> "standard" long-battery option, and when needed, reboot into full CUDA
> support.
>
> Did anyone try this, or does anyone know if this will work? Especially
> if it is possible to install the NVidia drivers only to single
> configuration...
>
> Any comments appreciated,
>
> Michal
>
>
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-- 
Regards,
Onti