GTX 660 glitch issue with MacOS High Sierra 10.13

[cbp]

Hello

When i enable my on-board graphic, my computer reboot during the start up so impossible for me to activate on-board video

Looking on Wikipedia, I see that there are some iMac model 13,2 that have 660M video card inside

I didn't test with changing conf to iMac 13,2 instead of 13,1 that I use from a long time

I have the same issue. My computer also reboots during the start up.

I have tried mizo007 method described above:
1.) installed all 3 kext mentioned
2.) injected Intel Graphics in config.plist with appropriate CPU as on a screenshot
3.) turned on Internal Graphic in BIOS

computer reboots during the start up(
P.S. need to mention I have a different CPU

 

[aghez]

I have the same issue. My computer also reboots during the start up.

I have tried mizo007 method described above:
1.) installed all 3 kext mentioned
2.) injected Intel Graphics in config.plist with appropriate CPU as on a screenshot
3.) turned on Internal Graphic in BIOS

computer reboots during the start up(
P.S. need to mention I have a different CPU

In the bios, change initdiaplayfirst to igfx. Seems to work

 

[nickw444]

I have the same issue. My computer also reboots during the start up.

I have tried mizo007 method described above:
1.) installed all 3 kext mentioned
2.) injected Intel Graphics in config.plist with appropriate CPU as on a screenshot
3.) turned on Internal Graphic in BIOS

computer reboots during the start up(
P.S. need to mention I have a different CPU

Sadly I also have a similar issue. Setting PCI as first doesn't allow me to boot. Just get a panic and reboot. Turning off IGFX entirely allows the system to boot but I still get artefacts. Considering biting the bullet and just getting a GTX1060.

 

[aghez]

Sadly I also have a similar issue. Setting PCI as first doesn't allow me to boot. Just get a panic and reboot. Turning off IGFX entirely allows the system to boot but I still get artefacts. Considering biting the bullet and just getting a GTX1060.

Could you please update yous signature to know your mainboard

 

[aghez]

I have made lot of testing for my configuration :
GA-Z77-UD5H rev1.1 and geForce GTX660.

First of all :
If I upgrade my BIOS to latests F16j Version AND I set the "Init Display First" param in BIOS to "IGX" and "Enable Internal Graphics", my bios boot to the screen connected to IGFX but clover does not show up, so i'm stopped....

My solution :
If i restore BIOS to F14 (last version not considered as Beta) AND I set the "Init Display First" param in BIOS to "IGX" and "Enable Internal Graphics", my bios boot to the screen connected to IGFX, as clover, and MacOS --> BINGO

I try to connect the 2 screen on the GTX660 with BIOS version F14 or version F16 and i have glitches.
Perhaps, that the root cause of the glitches is to have 2 screens connected to the GTX660 (i use 2 2 DVI ports).
I didn't' test with screens connected to different connectors (1 DisplayPort and 1 DVI for example). If someone can test this configuration ?

other things (not related to GTX660 ?)
I'm always boot in verbose mode and sometimes i have a message "does printf work ??". Need to reboot randomly to go to MacOS. Strange behaviors....

Just a remark, I also try the bootloader "OZMOSIS" (it's a clover inside the bios) and i flash my bios with a specific version for high sierra that i found on a german forum but i have some others problems (impossible de have realtecALC898 audio kext injection, update from 10.13.0 to 10.13.3 failed). To bad. This bootloader is interesting but not well documented....

Just for information, i'm using Nvidia Web Drivers.
i'm set my clover confif in attachment.

 

[nickw444]

Could you please update yous signature to know your mainboard

Signature updated;

For what it’s worth, I downgraded my machine to Sierra yesterday. Apart from having some initial issues in getting the thing to boot I found I could configure the GFX just as I liked;

I was able to set PCI gfx first, but still keep Intel IGFX enabled to allow DRM playback and airplay. In order to do so, I needed to use a connectorless ig-platform-Id. In addition to this before setting the platform Id, I needed to boot into OS X via IGFX first, and install Nvidia web drivers.

Also worth noting that I am running 3x 2k monitors from my 660TI. It seems the artefacts are prevalent for users doing multi monitor setups and high resolution displays.

 

[aghez]

In order to do so, I needed to use a connectorless ig-platform-Id. In addition to this before setting the platform Id, I needed to boot into OS X via IGFX first, and install Nvidia web drivers.

Whicl ig-platform-id did you use for drm and airplay compatibility ?

 

[nickw444]

Whicl ig-platform-id did you use for drm and airplay compatibility ?

I am using 0x01620006

A good description of the available options for HD4000 are available here: http://blog.stuffedcow.net/2012/07/intel-hd4000-qeci-acceleration/

 

[shein84]

"Init Display First" in BIOS to "IGX" and "Enable Internal Graphics" works for me. No needs for "Intel" clover injection at all.
I am using 3 monitors (2 DVI plus 1 HDMI) and no glitches so far.

 

[teras]

If i restore BIOS to F14 (last version not considered as Beta) AND I set the "Init Display First" param in BIOS to "IGX" and "Enable Internal Graphics", my bios boot to the screen connected to IGFX, as clover, and MacOS --> BINGO

I tried to do exactly the same.
Before downgraded, indeed CLOVER doesn't like the dual card support, and I get a black screen with the flashing cursor.

I hoped after the post of aghez, that downgrading BIOS will overcome this problem. Unfortunately no. I downgraded, and still see the black screen with the flashing cursor instead, thus I'm not able to even boot in OSX.

Of course if I change back the cards to the original settings, I could boot with the known problems