Monitor timing error when using 10.10.2. Nvidia drivers don't seem to work properly!

CPU: i7 4790K
Motherboard: ASUS Z97 pro wifi ac
Memory: Kingston 16 GB Savage 1866 MHz
GPU: Gigabyte windforce gtx 970 g1
SSD: Two Samsung Pro 500 GB
HDD: One WD 2TB Black

Yosemite installed by using latest Unibeast & Multibeast
Bootloader: Chimera

My GPU is connected to a Dell 2715H 1440p Monitor by a dvi to hdmi cable.

I managed to successfully install Yosemite 10.10.0 to my system, with only minor problems. ie for some strange reason the mouse tracking speed is at it's lowest possible value after every restart so every time I am forced to make manual adjustments. However, my main problem is that after upgrading to yosemite 10.10.1 or 10.10.2 my monitor gives a timing error and asks me to adjust my system to 2560X1440 60 Hz. I can boot my system only when i use nv_disable=1 and everything I tried, from what I read on this forum, fails. My last resort is that maybe if I use a hdmi to hdmi, or dp to dp cable will solve the problem. I think I can't do a wrong driver choice, because only compatible nvidia drivers can be installed directly to the proper yosemite version.

So now I am stuck at 10.10.0. Any suggestions?

Redessence said:

So now I am stuck at 10.10.0. Any suggestions?

Click to expand...

Now you are stuck with 10.10.0 or 10.10.2 ??

10.10.0 is ok, but I can't upgrade to 10.10.1 or 10.10.2. The driver doesn't recognize my card for some reason. On the contrary 10.10.0 is fine.

PS: When I am on 10.10.0 nvidia web driver identifies my card as NVIDIA GeForce GTX 970 (ECC Not Supported). When I am on 10.10.1 or 10.10.2 the NVIDIA Driver Manager indicates that "no device found - empty".

Redessence said:

10.10.0 is ok, but I can't upgrade to 10.10.1 or 10.10.2. The driver doesn't recognize my card for some reason. On the contrary 10.10.0 is fine.

PS: When I am on 10.10.0 nvidia web driver identifies my card as NVIDIA GeForce GTX 970 (ECC Not Supported). When I am on 10.10.1 or 10.10.2 the NVIDIA Driver Manager indicates that "no device found - empty".

Click to expand...

If you are updating OS X, then after OS X update you have to install the required version of Web Driver too.

Yes I did... The new driver doesn't see the gpu though. I don't know why, but it doesn't. And I use the right one. I tried to install other versions for experimentation and they don't install at all, because they are not compatible with the OS X version. I really wonder why the new nvidia drivers don't work for me.

Redessence said:

Yes I did... The new driver doesn't see the gpu though. I don't know why, but it doesn't. And I use the right one. I tried to install other versions for experimentation and they don't install at all, because they are not compatible with the OS X version. I really wonder why the new nvidia drivers don't work for me.

Click to expand...

What are the flags you are using for booting??

I use this guide from mrhevor
http://www.tonymacx86.com/user-buil...pro-haswell-i7-4790-ssd-gtx-970-yosemite.html

So I use -f and nvda_drv=1 when I boot after installing the proper gpu drivers.
If I boor with -f nv_disable=1 then I can boot properly without nvidia driver support.

In case you want my multi beast parameters I can tell you but they are the same as the guide's.

Redessence said:

I use this guide from mrhevor
http://www.tonymacx86.com/user-buil...pro-haswell-i7-4790-ssd-gtx-970-yosemite.html

So I use -f and nvda_drv=1 when I boot after installing the proper gpu drivers.
If I boor with -f nv_disable=1 then I can boot properly without nvidia driver support.

In case you want my multi beast parameters I can tell you but they are the same as the guide's.

Click to expand...

Try booting with "nvda_drv=1 GraphicsEnabler=No IGPEnabler=No -f -v", if the booting stuck with messages on screen then post a clear photo of the entire frozen screen.

Well the boot doesn't stuck until i see the black screen and the message for timing error. I get some error messages before the screen goes dead, but I must be really quick and try to get the photo. However, it doesn't stuck and I don't know if the error messages I get in verbose mode mean something.

Redessence said:

Well the boot doesn't stuck until i see the black screen and the message for timing error. I get some error messages before the screen goes dead, but I must be really quick and try to get the photo. However, it doesn't stuck and I don't know if the error messages I get in verbose mode mean something.

Click to expand...

To which port of the Graphics Card your monitor is connected to??

Avoid VGA and convertors. Use DVI/HDMI connection.