Still no 60hz@4K with 10.10.3

[Ch_f]

Recent 10.10.5 update with nvidia 346.02.03f01 drivers is 4K@60Hz safe

Thanks for these updates!
Some configurations are still left behind, as it seems.
Been running 10.10.1 with iMac12,2 profile with no problems. Update worked fine, but black screen on DP with said profile on my Asus STRIX card. iMac13,2 will work, but only with 30hz. All the Mac Mini profiles will get no signal on DP either. Have not tried every single possible profile but for now it seems I'm still stuck on 10.10.1. :/


TL;DR: I think some Graphics Cards might be unsupported, maybe all those who do not use the nVidia reference design. Anybody got something like a STRIX working under 10.10.5 yet?

Edit for people stumbling upon this post: This seems to be related to DisplayPort V1.2. When I disable that option, everything is a-ok, except of course 30hz only

EDIT 2: Ok, made the switch to the 2415Q. Conclusion in my experience (Asus Strix 970):

10.10.5 with NVIDIA Web Driver 246.02.03f01
DP 1.2: Yes
DP 1.2 4k 60Hz with SST: Yes
DP 1.2 4k 60Hz with MST: NO

 

[jtjacka]

Recent 10.10.5 update with nvidia 346.02.03f01 drivers is 4K@60Hz safe

Are you using Clover? If so which flags are you using? I have the exact same settings I had in 10.10.1 and but the driver 346.02.03f01 and I can't get DP 1.2 to work. Once I switch the monitor to DP 1.2 it goes black immediately.

 

[cccip]

Clover UEFI boot, new 10.11 El Cap and nVidia 346.03.02f01 web drivers works fine producing 4k@60Hz

So far stay with MacMini6,2 (but fix your USB for that sysdef)

 

[jtjacka]

Still can't get mine to work. Main difference I see is that you have the 980 whereas I have the 770. :-/

 

[albertodlh]

Clover UEFI boot, new 10.11 El Cap and nVidia 346.03.02f01 web drivers works fine producing 4k@60Hz

So far stay with MacMini6,2 (but fix your USB for that sysdef)

The MacMini6,2 workaround used to work for me back when I was in 10.10.1 + Chameleon, but now I moved to 10.11.1 + Clover and MacMini6,2 is giving me the black screen treatment. Only sysdefs that seem to work for me now are iMac 14,2 and MacPro 3,1. And neither gives me 60hz

If I use MacMini6,2 and inject nVidia I get the 60hz, but can't use dual monitors and get random reboots every now and then.

Has anybody dug into what is it that the MacMini6,2 sysdef does under the hood to make the 60hz work for MST displays, and see if that can be mocked somehow?

 

[albertodlh]

Btw, cccip! I noticed you tested up to El Capitan 10.11 with the web driver ver. 346.03.02f01. Have you upgraded to 10.11.1 + 346.03.03f01 yet? Is it working for you? I was thinking maybe I can't get it to work because of a driver version issue. With the MacMini 6,2 sysdef I get a black screen for DP 1.2, but DP 1.1 works properly.

Do you do something else apart from installing the web driver and setting the sysdef to MacMini 6,2? Like using any specific boot flag or installing the pixel clock patcher?

Thanks in advance for the help!