[ltp] Re: T520: With or without NVIDIA-Graphic?

Florian Reitmeir linux-thinkpad@linux-thinkpad.org
Fri, 30 Mar 2012 17:00:53 +0200

On 03/30/2012 12:36 PM, Axel Braun wrote:
> Florian Reitmeir wrote:
>>> Lenovo is currently offering spring sales with some interesting rebates.
>>> I'm looking for a T520, but not sure if to choose the one with
>>> onboard-Intel or separate NVIDIA Graphic NVS 4200M.
>>> Most interesting is how both chips work with S2ram and S2disk - do they
>>> wake up properly?
>> intel is ok, for NVIDIA you have to be lucky. in worst case you can't
>> use the nvidia card in the laptop because its switching between
>> intel/nvidia and the kernel/x.org are not supporting those setups.
> Thanks for your quick answer :-)
> Cant the card to be used be specified in the xorg.conf?

no, because in my understanding, the nvidia card renders it picture into 
the intel card-framebuffer, and the intel card is conntect to the display.

nvidia does not support this setup in the propritary drivers on linux.

but .. maybe i'm wrong :-) the feature is called "nvidia optimus" maybe 
found find more information for the laptop you desire.
Florian Reitmeir
E-Mail: florian@reitmeir.org
Tel: +43 650 2661660