Getting Lenovo Y510P SLI dual Nvidia GeForce 755m Cards to work.

[lmaurad]

So I have a Lenovo Idepad Y510p Sli with Dual Nvidia GeForce 755m cards (One NVidia card can be removed as it sits in the ultrabay slot)

 

The unique thing about this laptop is that when both Nvidia cards are in, the bios disables Optimus, that is if i load windows/linux/maverick there is no trace of the HD4600 integrated card. It only shows two cards in pci express slots, one as a video adapter card and the other one as a video accelerator card.

 

If i take the ultrabay Nvidia card out, and turn on the computer, the computer flashes for a second reboots itself within 3 secs(almost like if it was loading a different bios). 

If i then boot into windows then Optimus is enable and I can see the HD4600 card.

 

Thus the internal NVidia card must be connected directly to the LCD correct? otherwise it wouldn't be able to display anything.

 

I remember that when I had my Asus N56VZ(Nvidia 650m?) laptop with optimus, and was able to disable it using a modded bios.

If i tried to load Windows or OSX i would get a black screen(nothing on the lcd just hdmi output.)

 

But this is not the case here.

 

Do you guys think there is a chance to get this card working? Or am i beating a dead horse here. Anyway i can confirm that the lvds is connected to the Nvidia card? I can provide my ioreg, and DSDT's, and AIDA64 reports if necessary.

 

I should also mention that I took DSDT's and SDDT's when the laptop is in Optimus Mode and when it is in Discrete Mode. Both DSDT's are almost exactly the same they only differ on certain OperationRegions, however when looking at SSDT0 in Optimus Mode it shows the NVidia Card and the Integrated Graphics card, when looking at the SSDT0 for Discrete mode there is no mention of the integrated card and it just shows both NVidia cards.

[kenia1234]

So I have a Lenovo Idepad Y510p Sli with Dual Nvidia GeForce 755m cards (One NVidia card can be removed as it sits in the ultrabay slot)

 

The unique thing about this laptop is that when both Nvidia cards are in, the bios disables Optimus, that is if i load windows/linux/maverick there is no trace of the HD4600 integrated card. It only shows two cards in pci express slots, one as a video adapter card and the other one as a video accelerator card.

 

If i take the ultrabay Nvidia card out, and turn on the computer, the computer flashes for a second reboots itself within 3 secs(almost like if it was loading a different bios). 

If i then boot into windows then Optimus is enable and I can see the HD4600 card.

 

Thus the internal NVidia card must be connected directly to the LCD correct? otherwise it wouldn't be able to display anything.

 

I remember that when I had my Asus N56VZ(Nvidia 650m?) laptop with optimus, and was able to disable it using a modded bios.

If i tried to load Windows or OSX i would get a black screen(nothing on the lcd just hdmi output.)

 

But this is not the case here.

 

Do you guys think there is a chance to get this card working? Or am i beating a dead horse here. Anyway i can confirm that the lvds is connected to the Nvidia card? I can provide my ioreg, and DSDT's, and AIDA64 reports if necessary.

 

I should also mention that I took DSDT's and SDDT's when the laptop is in Optimus Mode and when it is in Discrete Mode. Both DSDT's are almost exactly the same they only differ on certain OperationRegions, however when looking at SSDT0 in Optimus Mode it shows the NVidia Card and the Integrated Graphics card, when looking at the SSDT0 for Discrete mode there is no mention of the integrated card and it just shows both NVidia cards.

Excuse me,

I own an asus n56vz and you just said that you got the ASUS N56VZ and you got HDMI output when you disabled Optimus via BIOS.

Did you manage to have GT 650M being working under OSX??

I have a modified bios to disable optimus and I can boot osx and the card is even being recognized but it only works over a VNC monitor.

thanks in advance.

Regards