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

[Javier Santoyo]

Hi Axel,
  Suspend to RAM works fine, I have no issues with this, and the laptop 
wakes up as soon as I open the lid.
Cheers,
Javier

On 31/03/12 18:22, Axel Braun wrote:
> 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.