jollsn

Ok.. This is exactly what I didnt want to hear.. This is end of my searching of solutions about nvidia.. It is sad that they put this great graphic card which you cant use on 100%.. Optimus is just wasting of technologies... Thank you so much for explain..

This was the thing I did and got black screen.. Here is written that y580 uses optimus technology, so nvidia is behind intel graphic, all display connections are linked to the intel graphic.. But I hope there is something how to bypass this issue.. If it is possible some extra modification of bios.. maybe some modification of vbios of intel graphic..

Once I tried to disable intel graphic in bios and got just black screen.. I have vnc server installed so I could reflash bios by another pc to take screen back, I'm not afraid to change something about it, but I dont know what.. If you give me something I can try it..

will be possible to change something in bios so to have nvidia as main graphic? to have full options for nvidia..?

Be advised !

If you try to completely disable your INTEL video card using the new settings/options made available in the new unlocked y580 bios you will disable as well :

the laptop LCD screen and the HDMI port

since the lcd screen inverter and the HDMI output are directly connected/tied thru the motherboard to the INTEL GPU on the processor ... no bios option will be able to disable it properly because its not designed for that at the circuitry level

On this machine design you can disable the NVIDIA GPU completely but not the other one (the Intel graphics or IGFX) ... when all enabled the intel one manages the Nvidia and the switching goes on thru the optimus scheme implemented at hardware/driver level between the intel GPU inside the CPU and the Nvidia GPU

http://www.nvidia.com/object/LO_optimus_whitepapers.html

If I understand, there is no possibility to use some nvidia optimisations like NVidia Surround (Optimise : How To Setup NVIDIA Surround on GeForce 600 Series GPUs | GeForce)..

Am I right?

Thanks!