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

[Axel Braun]

Javier,

thanks for the posting.
How about Suspend to RAM - does it work?

Thx/Axel

Javier Santoyo wrote:

> Hi,
> I have a T520 with NVIDIA optimus and after some searching I managed to
> get it working.
> If you want to use the optimus NVIDIA configuration you can use bumblee
> (http://bumblebee-project.org/) . When running bumblee it will render
> through the NVIDIA card on the laptop screen fine. However I have not
> managed with bumblee  to use the display port or external VGA. To be
> able to use external VGA or display port I needed to use only the NVIDIA
> card (no as optimus). To do this you have to disable the optimus option
> in the BIOS by choosing "discrete" instead of "optimus". After this,
> your laptop will behave as if it only has an NVIDIA card and you can use
> nvidia settings to configure the card and save the configuration to
> xorg.conf. I'm running xubuntu 11.10 with "discrete" mode and I can get
> an external monitor also working when connected to the display port or
> to the external VGA.
> Cheers,
> Javier
> 
> On 30/03/12 17:00, Florian Reitmeir wrote:
>> 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.

-- 
Linux on a ThinkPad: http://www.axxite.com/brn