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Intel HD 4600 4K 3840*2160 with Seiki 39" 4K display

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mikael

mikael

Joined
Nov 10, 2013
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6
Motherboard
Gigabyte H87N-WIFI
CPU
i5 4670k
Graphics
Intel HD 4600
Mac
  1. iMac
  2. MacBook Pro
Classic Mac
  1. 0
Mobile Phone
  1. iOS
Hello,

I just got the Seiki 39" 4K display. I have Hackintosh with Intel HD 4600 (i5 4670K) connected via HDMI to the Seiki. I don't know how to adjust to full 3840x2160 resolution. Tried Quickres, SwitchResX and so on.. The TV always says 1920x1080p@60Hz.

Any ideas?

Regards
Mikael
 
mikael said:
Hello,

I just got the Seiki 39" 4K display. I have Hackintosh with Intel HD 4600 (i5 4670K) connected via HDMI to the Seiki. I don't know how to adjust to full 3840x2160 resolution. Tried Quickres, SwitchResX and so on.. The TV always says 1920x1080p@60Hz.

Any ideas?

Regards
Mikael
Click to expand...

I don't think Intel supports high res on HDMI. Need to use DP instead.
 
I have this motherboard;
http://www.gigabyte.com/products/product-page.aspx?pid=4601#ov

Next Gen Intel[SUP]®[/SUP] 8 Series Platform
The latest Intel 8 Series platform offers significant improvements in performance and power consumption with the latest 4th generation Intel[SUP]®[/SUP] Core™ processors and Intel[SUP]®[/SUP] H87 chipsets. As well as a boost in overall productivity, the latest HD4600 Intel[SUP]®[/SUP] processor graphics provide native 4K resolution playback over standard HDMI connectivity, with significantly higher frame rates in the latest DX11 3D game titles.
Click to expand...
 
Many of the new Gigabyte motherboards are showing HDMI v1.4a & DisplayPort v1.2 available at higher resolutions. You must have a fully supported cable and a screen capable of running that resolution at 60Hz. I don't believe the Seiki screen works above 30Hz at this resolution.

Here is the details of the onboard graphics for a Gigabyte GA-Z87X-UD5H:
http://www.gigabyte.com/products/product-page.aspx?pid=4483#sp

Integrated Graphics Processor:
  1. 1 x DVI-I port, supporting a maximum resolution of 1920x1200
  2. 2 x HDMI ports, supporting a maximum resolution of 4096 x 2160 @ 24 Hz / 2560 x 1600 @ 60 Hz
    * Support for HDMI 1.4a version.
    (Use either the DVI-I port or the HDMI port located below it at a time.)
  3. 1 x DisplayPort port, supporting a maximum resolution of 4096 x 2160 @ 24 Hz / 2560 x 1600 @ 60 Hz
    * Support for DisplayPort 1.2 version.
  4. Maximum shared memory of 1 GB

Adrian B
 
Macallan
GA-B75M-HD3 |  i7 3770 |  Radeon HD 5570
Macallan
GA-B75M-HD3 |  i7 3770 |  Radeon HD 5570
With SwitchResX I finally made it possible to get full 4K yet with only 16 Hz. As the TV has maximum 30 Hz and video card 24 Hz, I should be able to get 8 Hz more. 16 Hz isn't that great :)
 
mikael said:
With SwitchResX I finally made it possible to get full 4K yet with only 16 Hz. As the TV has maximum 30 Hz and video card 24 Hz, I should be able to get 8 Hz more. 16 Hz isn't that great :)
Click to expand...


I'm running a GTX660 and have been able to get the 1920x2160 (half horizontal res) by using an HDMI cable, but it looks really blocky. I read around that OSX limits resolution on HDMI and that a workable solution is to get a mini-displayport to HDMI cable to trick the OS into thinking it's displayport and not HDMI. Supposedly works for people on macbooks but I'm not on one.

I got a (regular size) displayport to HDMI cable and hooked it up but I'm having the same problem. I am able to get 15Hz but not 30Hz by playing with switchresX, trying the custom Resolutions tab with simplified GTF settings.

Anyone who wants to try switchresX can use the gear pulldown bottom left and select "Paste Resolution from PowerStrip/Modeline" with this text to get 15Hz at least:

PowerStrip timing parameters:
3840x2160=3840,117,388,505,2160,1,3,15,158522,3

Generic timing details for 3840x2160:
HFP=117 HSW=388 HBP=505 kHz=32 VFP=1 VSW=3 VBP=15 Hz=15

VESA detailed timing details:
PClk=158522.26 H.Active=3840 H.Blank=1010 H.Offset=101 HSW=388 V.Active=2160 V.Blank=19 V.Offset=1 VSW=3

# XFree86 modeline parameters:
Modeline "3840x2160" 158.522 3840 3957 4345 4850 2160 2161 2164 2179 -hsync +vsync


Apparently there is an app for windows called Modeline that extracts these values that can be used. (Un)fortunately my machine doesn't have windows on it so I don't have it installed. Does anyone have a dual boot system they can run modeline on and get the proper 30Hz settings from???
 
OK So I found out that the 15/16fps issue is due to a driver limitation in OSX itself, capping the pixel clock frequency at 165MHz which prevents higher frame rates from being displayed. Supposedly 10.9 (Mavericks) has removed this limitation, but for those seeking a workaround for Mountain Lion (10.8.X), someone has made a patch, available here:

http://forums.macrumors.com/showthread.php?t=1651886

I have yet to try it myself, but will be giving it a shot later today. Anyone else out there trying, please post your results.
 
The patch got 30fps working for me. Once I had it working however I found the display so tiny that it was hard to use. I ended up having to manually turn on hidpi mode. This gives you what feels like 1080p but with lots of pixels (like a retina display only for your desktop).

Here is a link to a tutorial that supposedly shows you how to add custom resolutions without having to buy switchresX.

http://www.insanelymac.com/forum/to...na-hidpi-resolution-for-your-desktop-display/

It's a bit technical but I'm going to see if I can give it a try. I'm a bit of a programmer, so if I can get that to work, I'll see if I can't roll up all three into a single script that does it all in one step for people to download, maybe for TonyMac to add a future edition of Multibeast?
 
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