sony-vaio-z-series team mailing list archive

[mauro.bis@xxxxxxxxx]

Hi Tommaso,
I have a vgn z690 that should be quite similar to yours.
My laptop also activates both cards (intel and nvidia) by default. In order
to avoid this I added the following string to the kernel parameters in
lilo.conf:

acpi_osi=\"!Windows 2006\"

The backslashes are required because the double quotes are part of the
parameter string.
Try adding this line to the kernel parameters in your boot loader
configuration file.
In order to verify if it works you have to:

- halt the system and boot ensuring that this parameter is passed to the
kernel (you can verify it with cat /proc/cmdline)
- halt the system again
- now, with the power off, switch the physical switch below the screen to
either speed or stamina
- power the system on

Please note that in this case system halts are needed, not reboots.
At this point the correct speed/stamina led should be switched on and only
the corresponding cards should be active.

I found this procedure some years ago at this url
https://launchpad.net/~sony-vaio-z-series.

One more thing. I read somewhere (i can't find the link now) that updating
the bios to the version required by win7 may prevent the procedure above to
work, at least for my vaio model (for which the latest bios is R4044M3).
I'm not sure about yours but you updated your bios so take this possibility
into account.

Hope this helps.

Best,
Mauro

On Wed, Oct 3, 2012 at 7:56 AM, Flavio <fbcyborg@xxxxxxxxx> wrote:

> On 3 October 2012 00:41, tommaso capelli <thetom199@xxxxxxxxx> wrote:
> > Hi,
> > I'm finally writing you from my new mint 64 installation. The only big
> > problem is that both cards are recognized by the system. The
> stamina/speed
> > switch seems not working. I think that the problem is the bios, but i'm
> not
> > so sure about that.
> > Does anyone knows how can I fix this?
> > Thank you in advance
> Hello,
>
> I had a Sony SZ330P having the same your stamina/speed switch and as
> far as I can say, if you switch on speed, it doesn't recognize the
> integrated
> grafic card and vice versa. Only one graphic card should be recognized.
> So it sounds very strange to me that both are recognized at the same time.
>
> Anyway, this is still not sufficient, because you have to configure an
> initscript
> that switches opengl to (e.g.) nvidia to xf86 depending on what the
> selected
> mode is.
>
> Cheers,
>
> Flavio
>
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