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Nvidia GTX 295 Black Screen

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Gooooooooood News....

 

 

GTX295 Successfuuuuuuuuuli working with acceleration and sleep ( for Me )

firts my spec :

Rampage || extreme -1802 bios

i7920

12 gb corsair

zotac gtx295..

 

Do Not delete any extension from ur System\Library|Extension...

 

i have got snow leopard 10.6.6 and on other drive my lion...

 

1.create ur installer drive 10.7 with extre folder ( NVenabler must be in installer to get it work )

2. after installing ur lion, come up with ur snow leopard and copy ur extre from 10.6.x to ur lion drive..

ther extre must include {{nvenabler}}{{ gtx295fix}}and 2 evil file

EvilAppleACPIPlatform

EvilIOPCIFamily...

 

so first install lion... then copy ur extre with the files above...then the other extension (sound network or multobeast)

...

 

Hi there

 

I have a simular PC to you but only made this work with 10.7.1 did you have any luck updating to 10.7.2? I can't even use the combo update unless i go back to an install where i did not have enabled graphics... It crashes on my 10.7.1?

 

Any ideas?

 

Thanks,

Zyberg

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Some words of wisdom,

 

use the EFI string as mentioned on the first page.

it will work.

it will even work if you have 2 GTX295's like me :D.

i doubled the info in one plist and gave it the good adressing.

Works exept that the first display device is still in about this mac as 'display'.

but i still have QE/CI.

I am now trying to port the Plist option into my DSDT.

See if it will work, then see if that will show me all devices.

 

Oh and you don't need the Evil kexts.

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Other advice for the GTX 295 going into a blank screen, or indeed any other nVidia GPU, it goes like this

 

"Try all available display ports"

 

When the driver activates, it might only activate one of the display ports. I have an EN210 and out of the box it will only work using the DVI port, and NOT the VGA... I was originally jacked into the VGA port and was confused by the black screen bootups, turned out the driver only activated one of the outputs.

 

Same with the GTX 295... if yours is anything like mine (i suspect they are all the same) it will have 2xDVI and 1xHDMI

 

I have read that when the card is set into Non SLI mode, only one of the PCBs/GPUs will activate a display. This apparently has a caviat that the card will want to use the HDMI output first. In Windows the driver i think takes care of it and gives you the DVI back. Is OSX, i am not sure if that is the case.... however I got at least one of the GPUs up and running out of the box using the following method.

 

 

install Lion 10.7.0 and update to 10.7.3 via the combi download.

install the driver from here http://www.nvidia.co...f01-driver.html

boot up using graphics enabler = yes and did not use anything else graphics related.

 

 

When my display is plugged into the DVI ports (either of them) I get a blank display... all looks bad... oh dear. But jacking in the HDMI and bingo, OSX is in fact running and at least one of the GPUs is active.

 

 

For me this worked perfectly, full acceleration and resolution. So when you get a blank screen of death on the 295, check first if the hard drive is still active, i found that despite the display looking dead, the rest of the computer was very alive. Then try jacking into the HDMI port rather than one of the two DVI.

 

Only thing i havent looked at is if both PCBs are active as in my system report i have two display adaptors, one simply "nVidia Display adaptor" and the other "nVidia GTX 295"

 

This was achieved about 2 hours ago so more testing is required

 

While i understand that most with a GTX295 want to use it for OpenCL related bits and bobs, and the occasional game etc, i think for most who are just interested in having their hackintosh working and usable, spending days trying to get both GPUs working should only be done if you are an absolute completest or if getting them up is trivial (it might be, i haven't tried it yet) The 295 is a nice graphics card even when only running half capacity though :D

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