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Old 02-20-11, 07:08 AM   #109
P.Kosunen
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Default Re: Optimus support for Linux

Quote:
Originally Posted by 5h1mmy View Post
(it should have a 13" display (prefered non glare) and I want to have the possibility to watch HD videos on it)
Asus P31F has non glare display (Intel GPU, no Optimus).

Edit: All P-series models might have non glare display.

Last edited by P.Kosunen; 03-03-11 at 12:01 PM.
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Old 02-22-11, 08:28 PM   #110
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Default Re: Optimus support for Linux

Just so you know, NVidia, my next netbook will be an AMD fusion HP-DM1z instead of your Optimus crap, which doesnt work on linux.

U can wave goodbye to all linux users like me whom paid excess $$ for your GPU and yet unable to use them.

Bye bye Nvidia, you are a "has been".
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Old 02-23-11, 02:40 AM   #111
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Default Re: Optimus support for Linux

Damn, new Sandy-Bridge Thinkpads will have opticrap. We really need AMD to get decent mobile platforms or intel to buy nvidia.
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Old 02-23-11, 03:15 AM   #112
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Default Re: Optimus support for Linux

I suppose one of the reasons NVIDIA doesn't support Optimus under Linux is that X.org server architecture doesn't quite fit this technology requirements. As I understand Optimus it requires plugging in and unplugging video output drivers on-the-fly and routing the output of NVIDIA GPU via the same circuit which the embedded GPU uses.

Another problem is that NVIDIA drivers completely replace X.org server GL/GLX subsystem, while e.g. Intel drivers require classic MESA GL. I don't think reconciling these two approaches/subsytems is a simple task from any perspective.
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Old 02-23-11, 07:51 AM   #113
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Default Re: Optimus support for Linux

The pretty much only possible way would be for the nvidia driver to also include an intel driver. But I don't see nvidia writing a driver for intel graphics. Though I don't think an entire driver would be needed, just the modesetting part. So the intel card wouldn't actually do anything beyond setting the mode, the nvidia card would do all the drawing and then copy it onto intel's framebuffer.

Still, I don't see it happening. However nvidia has surprised me in the past, with the introduction of VDPAU, so who knows...
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Old 02-24-11, 10:41 AM   #114
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Default Re: Optimus support for Linux

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Originally Posted by Gusar View Post
The pretty much only possible way would be for the nvidia driver to also include an intel driver.
No, they just need to provide a multiplexing driver, which implements the X protocols at both top and bottom, acting as a simple selector between the two lower level drivers (Intel and NVidia). Plus a bit of extra plumbing to manage the location of the frame buffer.

-ml
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Old 02-24-11, 11:41 AM   #115
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Default Re: Optimus support for Linux

Again, Optimus is not about switching cards. It's about both cards doing work at the same time, intel handling the light loads, nvidia the heavy loads.

The nvidia card has no physical outputs. The only way to get the picture out is via the intel card. For that, you need to drive the intel card.
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Old 02-24-11, 03:25 PM   #116
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Default Re: Optimus support for Linux

This might be a stupid question, but which chip will I get when just running on such a notebook?
Integrated with DRI?
NVidia with binary NVidia drivers??
Neither?
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Old 02-24-11, 05:03 PM   #117
Gusar
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Integrated with DRI.

And the nvidia card sucking power even though it isn't used, unless you can use the acpi_call kernel module to power it down.

Or maybe you've got a notebook that has a hardware mux, where you can actually give the nvidia card physical outputs. On such a laptop, you'll have the option to switch to the nvidia card in the BIOS.
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Old 03-02-11, 09:23 PM   #118
zhushazang
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Thumbs down Re: Optimus support for Linux

And some NVIDIA'S employees can say to me why in hell i cannot run a simple cuda programming with Optimus Device and Linux?

There something more than a simple display "des"connection.

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Old 03-03-11, 11:36 AM   #119
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Default Re: Optimus support for Linux

It's simple.
Since nVidia driver is hacking XServer then it cannot coexist with any other driver, but it need to be done in order to both have display screen with Intel and do CUDA with nVidia.
So, no go.
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Old 03-03-11, 12:22 PM   #120
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Then, i suppose is correct to think that nvidia optimus chipset in linux is some type of cāncer, only consuming energy.

Damn Nvidia.
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