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

[mchis]

So, updates. It kind of works - I mean I have 1920x1080 HiDPI, but I don't have the "native scaled modes" to say so - in other words, the "Displays" prefpane does not show the 5 image-based scaled resolutions like it does on MBPr, but a standard scaled resolutions list as follows:



What I was looking for, i.e. 2560x1440 HiDPI, is missing... I have tried adding it to SwitchResX but I got stuck at the "not installed" issue, then I tried adding it as a custom scaled resolution (i.e. 2560x1440 and 5120x2880) in a custom display profile, no luck either.

Any suggestion would be appreciated!

 

[rael11]

Yes, that's exactly what I get, just that somewhat limited list. Since native 4k is just fine at 39" I've never tried to get those other resolutions.

Anyone get that other style of resolution picker in some other context?

 

[rael11]

So, updates. It kind of works - I mean I have 1920x1080 HiDPI...

So, just to clarify, you're getting this HiDPI resolution at 60Hz over the DisplayPort connection of your Asus mobo? If so, congrats! And thanks for the report.

 

[mchis]

Yes, that's exactly what I get, just that somewhat limited list. Since native 4k is just fine at 39" I've never tried to get those other resolutions.

Anyone get that other style of resolution picker in some other context?

It seems that with a (supported?) discrete graphics card (see http://www.tonymacx86.com/graphics/151591-success-4k-60hz-enabled-dell-p2415q-retina-resolution.html) the resolution picker is exactly as displayed on MBPr.

 

[mchis]

So, just to clarify, you're getting this HiDPI resolution at 60Hz over the DisplayPort connection of your Asus mobo? If so, congrats! And thanks for the report.

Yes, I can confirm that with these two mods, P2415Q works 1920x1080 HiDPI @ 6Hz over DisplayPort!

 

[mchis]

Just as a final clarification, after installing a dedicated gfx card (ASUS GTX 960 STRIX) I have HiDPI mode as expected, i.e. MBPr-style (the five "native" scaled resolutions displayed as images).

 

[rael11]

10.10.5 Update

Back from vacation, so just getting around to upgrading, and it still works.

This is the first time since 10.10.0 that Apple updated AppleIntelFramebufferAzul.kext, so I wasn't able to simply restore the previous patched kext, but applying the patch in the same way worked fine.

 

[cchi4893]

Hi,

This is maybe not-so-related question but I want to ask one question. Would DP or HDMI works with 3440x1440 resolution on Hackintosh? I am looking for a new 34" monitor (most likely LG 34UC97, with DP HDMI and Thunderbolt ports, no DVI or VGA)

I've got a rig with:
Intel i5-4690K, Asus Strix GTX970, Asus H97M-Plus, 16GB RAM. El-Capitan

I currently connect my rig to my monitor (Asus VS238) using a DVI cable and it works fine, but as the new monitor I'm about to get doesn't have DVI, I'm just afraid I won't be able to use the monitor once I purchased it.

Thank you very much for your help

 

[schwingel]

http://www.tonymacx86.com/graphics/175973-solved-el-capitan-2560x1440-hdmi-ga-h97-d3h-hd4400.html

 

[maxcarl]

Old thread, but I'm assuming there are still some happy Seiki owners out there!


There are two issues that interfere with using the Seiki from a fresh Yosemite 10.10.1 Multibeast install:

1) HDMI clock limit (limits you to a sluggish 14Hz at 3840x2160)
2) Inadequate framebuffer memory (limits resolution choices to 1920x1080 max)

For the first issue, I just applied the latest "mac-pixel-clock-patch" updated by darkvoid.

For the second, I patched /System/Library/Extensions/AppleIntelFramebufferAzul.kext, based on the ideas from these pages:

- "HD4000 graphics problems when using a very big external screen" on Apple's discussions forum
- HD4400/HD4600 reference information on another site

Just 3 changed bytes:

OLD: 03 00 22 0D 00 03 03 03 00 00 00 02 00 00 30 01
NEW: 03 00 22 0D 00 03 03 03 00 00 00 04 00 00 00 03

This boosts the RAM Allocation to 64MB and the Framebuffer Memory Size to 48MB. I suppose one could optimize the Framebuffer Memory Size further, this was my initial conservative guess, but it seems fine.

It works well, completely stable and free of glitches, exactly the same experience as with my MBPr on 2D graphics.

It would be trivial but I hesitate to wrap this up into a script until some testing feedback comes in, for all I know it may work better on my CPU type, motherboard, BIOS, etc., than on others.

Dear rael11 (and others),

I have a GB Z87N-WIFI (with a i7 processor (Intel HD 4600). My monitor is an AOC u2868Pqu. In Linux I have no problem getting 3840 x 2160 @ 30Hz. Not so with OS X (currently El Capitano)...

What would I need to do to make 4K work? I've done the pixel-clock-patch (https://github.com/Floris497/mac-pixel-clock-patch).

Could you or someone else explain how to go about editing the patched /System/Library/Extensions/AppleIntelFramebufferAzul.kext?

I suppose this is very similar to the resolved situation with the Seiki?

I would be extremely grateful for all your input!