Moved from GTX 660 to GTX 970. Not booting. Running 10.10.1.

[fliptwister]

I moved to a new graphics card (GTX 970) and I cannot boot into OS X anymore. Is there a particular procedure for changing video cards? Any recommendations on particular boot flags which will help me get in?

Thanks!

 

[dobo2001]

Try GraphicsEnabler=No, npci=0x3000, nvda_drv=1, or nvda_disable=1. This also might depend on your bootloader. Also try searching around this website for others that have a similar problem.

 

[defbref]

Does nobody do any research anymore ? There's literally hundred of posts on the 970!

It doesn't work out of the box but doesn't take much to get it working.

You need to boot with nv_disable=1 then install the nvidia web drivers.

See: http://www.tonymacx86.com/graphics/...ate-graphics-drivers-10-10-2-343-02-02-a.html

Edit: sorry your running 10.10.1 so you will need to find the nvidia drivers for that, or just upgrade to 10.10.2

 

[fliptwister]

I did a fair amount of research before posting here. I have tried nv_disable=1 and the other flags that dobo mentioned with no luck. I have also ran dart=0. I don't know if this matters but I was not running with nvidia drivers while on my gtx 660. When I go to video info at beginning of boot it says "VESA v3.0 16MB (NVIDIA)". Thanks for any help.

 

[P1LGRIM]

I did a fair amount of research before posting here. I have tried nv_disable=1 and the other flags that dobo mentioned with no luck. I have also ran dart=0. I don't know if this matters but I was not running with nvidia drivers while on my gtx 660. When I go to video info at beginning of boot it says "VESA v3.0 16MB (NVIDIA)". Thanks for any help.

"no luck" is not useful for diagnosis of the problem.

Boot with -v and whatever other boot flags you are using, post a picture of the screen when it stops.

 

[defbref]

I don't know if this matters but I was not running with nvidia drivers while on my gtx 660.

Yes because the 660 has been supported OOB since 10.8.5, the 970 (and all other maxwell GPUs) is not yet supported OOB.

 

[fliptwister]

Here is screen when it stops:

 

[aunaste]

I moved from GTX 660Ti to GTX 970. Much faster but FCP and Motion still 2 times slower than with R9 290. I measured with BruceX test http://blog.alex4d.com/2013/10/30/brucex-a-new-fcpx-benchmark/

Times:
660Ti - 122 sec
970 - 67 sec
R9 290 - 30 sec (Clover)

 

[slim.jim]

You have to install the drivers with any Maxwell card.

 

[slim.jim]

I have a similar issue, going from EVGA GTX 650 2 GB to a Gigabyte G1 Gaming GTX 960, and have the same issue. I've read that the profile has to be a MacPro for the newer cads, so I switched it to that. However, I always have to use the nv_disable=1 and -x flags to get in, and when I do I have minimal graphics and a card showing only 7 MB of memory.

You do not have to use a Mac Pro profile but you do have to have the drivers installed. By using -x you are disabling the drivers if you do have them installed which is why you then also need the nv_disable flag. Install the drivers and then use nvda_drv=1 to use those drivers.