Any ideas People .??

[samsondk]

Hey everyone .and happy new year .

so I while back i purchased an awsome monitor . samsung chg90 144 hz.49 inch ultrawide 32,9 aspekt ratio monitor .
I love this thing ..and the thing that drives it is my trashcan Mac Pro late 2013 fully loaded 12 cores 64 gigs ram 1 tb drive and so on ...I mostly use It for Logic Pro x but today I wanted to try out a game on it for the first time ...Rise off the tomb raider ....and it runs fine ..and then I realised that I was only running in 60 hz. so I changed it to 144 ..and wow ...huge difference ..but also a huge problem ..the right side of the screen is tearing up on desktop ..and flickering appears.. as soon as I change it to 120hz .the problem is gone ..also at 60 hz
its running on displayport and the setting on the monitor is on 1,2+ displayport version ..and I if I change it there is no difference unless I do 1,1 then it can only go 60 hz...at 120 hz it has no problems .at all ...as soon as I go 144 hz ...it tears up ..but only on one side...changed display ports ...did not help ..Reset Nvram ..did not help ...changed displayport cable ..did not help firmware updated the monitor ..no go ..running on Mojave ....any ideas people ???...many thanks .

 

[AidenShaw]

Hey everyone .and happy new year ..

Perhaps if you'd edit the title to be more descriptive (something like "144 Hz display on 6,1") you might have better luck. Lot's of people just skip over content-free titles. (There's a gear icon at the top right of the first post that lets the poster edit the title.)

 

[thornslack]

I rather doubt the 6,1 is capable of pushing 144 frames at that resolution. But I can’t explain your problem. OS X doesn’t really handle non standard screens well. Apple just assumes 60hz and standard color space is fine for everyone.

 

[h9826790]

I am quite sure your GPU doesn't support DP 1.2+

I am running the same monitor with RX580 (on my Mac Pro 5,1). It's OK to run at 144Hz, even with 10bit and HiDPI (for better screen capture and text AA) still can do 144Hz. So, not macOS issue.

For testing purpose, I ran this monitor with HD7950 and R9 380. From memory, both can't do 144Hz but only 120Hz (non HiDPI). Since even the D700 is just belongs to the HD7xxx family, and older than the R9 380. So, I believe your GPU can't do 144Hz at that resolution. In fact, as per Thunderbolt 2 spec, it's only DP 1.2.

 

[samsondk]

I am quite sure your GPU doesn't support DP 1.2+

I am running the same monitor with RX580 (on my Mac Pro 5,1). It's OK to run at 144Hz, even with 10bit and HiDPI (for better screen capture and text AA) still can do 144Hz. So, not macOS issue.
View attachment 815052

For testing purpose, I ran this monitor with HD7950 and R9 380. From memory, both can't do 144Hz but only 120Hz (non HiDPI). Since even the D700 is just belongs to the HD7xxx family, and older than the R9 380. So, I believe your GPU can't do 144Hz at that resolution. In fact, as per Thunderbolt 2 spec, it's only DP 1.2.

hello there and many thanks for the head up .
I did try to enable this Hidpi in terminal ...and entered my password but nothing changed ..
on the resolution list I only have 3840x1080 but not with Hidpi option and if I want to have it in 120 hz or higher I need to enable
show low resolution option....then I can choose from 100hz to 144 hz .
everything works except 144 hz that ends up flickering my monitor on the right side only
and the Hidpi option resolution is nowhere to be found ...my Mac is just to damm old ...LOL .
well guess I have to do with 120 hz then ...but how in the hell did you get 7680x2160 resolution on the same monitor
I don't have this option. ...newer Gpu options I presume ? or does this have to to with this ..Hidpi thing that is non existent on my Mac. ...and this 10bit option ...were do I find this option ... and one last thing ..1,2 or 1,2+ ...settings on the monitor.??

.. anyways ..many thanks for you Time ...

 

[tpivette89]

.but how in the hell did you get 7680x2160 resolution on the same monitor
I don't have this option. ...newer Gpu options I presume ? or does this have to to with this ..Hidpi thing that is non existent on my Mac. ...and this 10bit option ...were do I find this option ... and one last thing ..1,2 or 1,2+ ...settings on the monitor.??

.. anyways ..many thanks for you Time ...

h9826790 has a 5,1 cMP (2009 -2012) which enables him to use standard PCIe desktop GPUs which support that option (as in his RX 580). With your 6,1 nMP (the trashcan-late 2013+) you are limited to whichever GPU came installed with it (D300/500/700) and cannot upgrade to run the higher resolution/refresh rate.

 

[rawweb]

Absolutely love your setup. Stunning.

Too bad a trash can is running such a beautiful monitor . At work, I was trying to drive dual thunderbolt displays (1440p) and a 4k client monitor with D700x2. The GPU and flex cable burned out every other month. Eventually Apple offered me a top of the line iMac Pro so I'd stop coming to the store with such an embarrassing trash can and to shut me up. Moral of the story, I doubt the wimpy cards in nMP can drive such an awesome display.

I have nothing great to add, just admiring your setup.

 

[deconstruct60]

I am quite sure your GPU doesn't support DP 1.2+

Also, pretty sure it doesn't. DisplayPort 1.2a only finalized in January 2013 and first commercial demo not until CES 2014. 2012 era cards don't appear on AMD's FreeSync support list either. The 2013-2014 retreads that are 2012 tech don't either. The D300/D500/D700 from the HD 7000 (GCN 1) era which baseline technology launched in 2012. .... before the standard was finalized. So about zero chance they committed it to hardcoded silicon in 2011 timeframe when the design was probably finalized. )

120Hz probably 'happens to work' because inside the bandwidth limits and it is an even x2 multiple of the supported frame rate.

Apple's 4K and 5K display support page. Apple's talks mainly about 30Hz and 60Hz and some 24Hz modes. ( which is an indication of where their testing and certification focus is ). While the 24Hz is a multiple of 144Hz , it is high enough that not really what they were looking for.
[doublepost=1547094516][/doublepost]

Hey everyone .and happy new year .

so I while back i purchased an awsome monitor . samsung chg90 144 hz.49 inch ultrawide 32,9 aspekt ratio monitor .
I love this thing .
.... as soon as I change it to 120hz .the problem is gone ..also at 60 hz

If the monitor has a "two inputs on screen at same time" ( 1/2 display video source 1 and 1/2 display video source 2 ) , you could try limiting yourself to a smaller and cranking up to 144Hz. If it tears on that then for sure it is the timing. If it doesn't then problem is probably a combo of the Hz and bandwidth.

The 120Hz is probably in the "happens to work" mode.

 

[h9826790]

If the monitor has a "two inputs on screen at same time" ( 1/2 display video source 1 and 1/2 display video source 2 ) , you could try limiting yourself to a smaller and cranking up to 144Hz. If it tears on that then for sure it is the timing. If it doesn't then problem is probably a combo of the Hz and bandwidth.

This monitor does support two input together (PBP), which can be 1920x1080 + 1920x1080. However, from memory, when using this mode, each side will be limited to 60Hz only.
[doublepost=1547115306][/doublepost]

hello there and many thanks for the head up .
I did try to enable this Hidpi in terminal ...and entered my password but nothing changed ..
on the resolution list I only have 3840x1080 but not with Hidpi option and if I want to have it in 120 hz or higher I need to enable
show low resolution option....then I can choose from 100hz to 144 hz .
everything works except 144 hz that ends up flickering my monitor on the right side only
and the Hidpi option resolution is nowhere to be found ...my Mac is just to damm old ...LOL .
well guess I have to do with 120 hz then ...but how in the hell did you get 7680x2160 resolution on the same monitor
I don't have this option. ...newer Gpu options I presume ? or does this have to to with this ..Hidpi thing that is non existent on my Mac. ...and this 10bit option ...were do I find this option ... and one last thing ..1,2 or 1,2+ ...settings on the monitor.??

.. anyways ..many thanks for you Time ...

I use ResXtreme to get the extra settings.

http://resxtreme.com

And I use DP 1.2+ on my monitor. But when using it with R9 380 or HD7950, from memory, DP 1.2+ may cause problems, and DP 1.2 is the setting to use.