High Sierra gIOScreenLockState Dual Video Cards

[RSN]

Hi Everybody. Hope all is peace and love.... 

 

Context

Mobo Intel DX79TO(No Integrated Video)

32GB Ram

2 SSDs

2 GT 620 video cards

2 GT 710 2GB video cards

 

History

Have had Hackintosh since 10.4. From Snow to Sierra with 2 video cards and 4 displays-monitors. Solved minor video problems but all worked perfectly.

Sierra working with GT 620 and GT 710 and 4 monitors. GT620 need some settings but GT710 direct OOB.

Installed High Sierra 10.13.4 (17E202) HFS using VESA mode.

HS does not work with GT 620, direct or web drivers.

Usually sleep does not work with this mobo-video cards combo, but it does not bother me.

 

Situation

HS works with GT 710 cards with Web Drivers but has serious issues regarding gremlins, blurs, lag, poor quality, etc. I guess I could live with that but I hope not.

 

Without Web Driver we have a weird error that I haven't seen reported.  It is a gIOScreenLockState error but not the kind I've read about, during boot. ( Image Attached).

 

Basically HS boots fine, -v used and all seems fine. Login Screen is shown, password input and for a sec or two one can see the finder with opened windows, etc and then the following console message is seen top left:

 

IOConsoleUsers: time(0) 0->0, lin 0, llk 1,

IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0

 

and we are back at the Login Screen ad infinitum

 

Alternatives Tested

This has been going on for 2 months or so and as you can imagine I have tried a lot, I mean a lot, of kexts, patches, clover options, efi drivers, etc to no avail.

The last experiment I tried was to replace HS NVIDIA related kexts, and other related, from latest Sierra. No joy. Actually destroyed internal structures. Had to do major surgery to rescue the installation (kextcache, prelinkedkernel, etc). Barely made it.

 

Partial Solution

So after all this, yesterday I tried disconnecting the displays from one card and just keep one card with a HDMI and a VGA monitor. (Should have tried this months ago ). It WORKED. That is, with default macos Graphics Driver works perfectly. No gremlins, lag, blurs, etc.

 

Just that I am missing 2 more displays

 

HELP

So, hope somebody can guide me to a dual video card installation that works, mixing HDMI with VGA or DVI-D, whatever. I do not know if Radeon will have this problem. I am tired of buying video cards.

 

Thanks in advance.

 

 

[RSN]

Update:

Got a DVI-D Cable and connected it to the BenQ monitor,the VGA to the old VGA and the HDMI to a Sony TV all in one card and it works!!! That means if we can get up to 2 HDMI 2 DVI-D and 2 VGAs if we can make the second video card to work.