hybrid-graphics-linux team mailing list archive

[Martin Juhl <mj@xxxxxxxxxxxx>]

Hi.. 

Thanks for all your comments.. 

I will see what I can get incorporated into a better howto... 




Fra: "Pigeon" <pigeon@xxxxxxxxxxx> 
Til: hybrid-graphics-linux@xxxxxxxxxxxxxxxxxxx 
Cc: "Martin Juhl" <mj@xxxxxxxxxxxx> 
Sendt: tirsdag, 3. maj 2011 23:08:24 
Emne: Re: [Hybrid-graphics-linux] Optimus Solution found!!!! Using my Nvidia card in my Alienware M11X R2!!! 


> I will keep the howto and todo list updated here: 
> 
> http://www.martin-juhl.dk/2011/05/optimus-on-linux-problem-solved/ 

Sounds pretty cool. Going to give it a go later today. I have 
the M11x-R2 as well. 

A few comments for your howto: 

> Further Idea’s: 
> Maybe a seperate X-server for the Nvidia card is the way to go, so we 
> can shut that down as well when not used... 
> 
> Try to get both the Intel and the Nvidia libraries installed at the 
> same time, so that 3D is enabled for both cards.. 

While I was experimenting vnc approaches before, I set it up so 
it's running two X servers, with both intel and nvidia 3d working. 

Firstly I had to run both X on the same vt by using the 
-sharevts switch. I usually set my default xorg.conf (run by gdm) to 
use the intel display. 

Secondly, there's a -modulepath switch, so I created 
a duplicate of /usr/lib/xorg/modules (let's 
say /usr/lib/xorg/modules.nvidia), and symlink all 
the files from /usr/lib/xorg/modules, except extensions/libglx.so, 
which I symlink it to the real nvidia library. And when you want to run 
a GL app using the nvidia libGL, set LD_LIBRARY_PATH=/usr/lib/nvidia 
(this is where the nvidia libGL is on my setup). 

I'm on Debian and using all the nvidia binary driver from Debian 
(non-free). It uses the "alternatives" (/etc/alternatives/) approach 
for things like libglx.so and libGL, so I don't have to deal with them 
myself. 

Another way is to use a chroot maybe, but that's a bit overkill 
I think. 


Another quick note. I notice in your xorg.conf you've set your 
resolution to 1024x768 and with IgnoreEDID for the nvidia. What I've 
done was using read-edid to read the monitor edid when using the intel 
card, then use CustomEDID "/path/to/that.edid". 



Pigeon.