[SOLVED] El Capitan with 2560x1440 by HDMI (Ga-H97-D3H / HD4400)

[schwingel]

[SOLVED] El Capitan with 2560x1440 by HDMI (Ga-H97m-D3H / HD4400)

Recently I managed to fix the 1440p graphics using HDMI with El Capitain.

Yosemite has the same problem, so this solution probably could be used too. (maybe it works to 4k too, *not tested)

I'm using a mobo Ga-H97m-D3H and an i3-4170 / HD4400

Did two things:

1. run mac-pixel-clock-patch

https://github.com/Floris497/mac-pixel-clock-patch


2. Patched AppleIntelFrameBufferCapri.kext according this method. I used Kext Utility to inject the patched kext.

https://jonathansblog.co.uk/lg-34um95-osx-yosemite-resolution-bug

(I'm not sure if step two is really necessary. I did it first. After a reboot nothing happened. Then applied the mac pixel patch, did a new reboot and find 2560x1440 resolution in pref panel > Displays! \o/



UPDATE:

a. I'm almost convinced step 2 isn't really necessary.
b. Just did an automatic updated to 10.11.1. After reboot the screen resolution was lowered . Then I run the latest version of mac-pixel-clock-patch, did a new reboot and the find again 2560x1440 resolution in pref panel > Displays!

 

[diego77]

thanks!!! it works just with step 1! (Ga-Z97X-UD3H / HD4600)
nice cat!

 

[roxtaz]

thanks!!! it work just with step 1! (Ga-H97-D3H / HD4600)
nice cat!

The same with GA-Z87X-UD3H ... first step only.

Thanks a lot!

 

[insitemotion]

This worked with Step 1 for me. Thanks! -- Nvidia GTX970

 

[sselshamy]

is this patch works with any OS X version like 10.11.1 or require certain OS X version?

i need to know before patching and don't want to get by running system to crash.

Thanks

 

[tjohnson5]

This works on my HD4000 and LG Ultra monitor (2560x1080) but if the system goes to sleep upon waking the screen is only 1/4 of the original width and shifted. Anyone else have this problems?

 

[schwingel]

This works on my HD4000 and LG Ultra monitor (2560x1080) but if the system goes to sleep upon waking the screen is only 1/4 of the original width and shifted. Anyone else have this problems?

I just updated the os to 10.11.1 and then rerun the patch, reboot and worked fine.

 

[schwingel]

This works on my HD4000 and LG Ultra monitor (2560x1080) but if the system goes to sleep upon waking the screen is only 1/4 of the original width and shifted. Anyone else have this problems?

Here sleep is working just like a charm.

 

[tjohnson5]

I upgraded to 10.11.1 reran the patch but still no luck. I just set computer sleep to never and will try to find another work around. Fortunately, it is now getting cold here so I don't mind a little house warming.
Btw, without the patch, the video in 1920x1080 mode and the computer sleeps and everything works perfectly. This is on a ga-b75m-d3h motherboard with a i7-3770k processor (using hd-4000 video).

 

[timohour]

Works on a Gigabyte H87N 10.11.2 built but for some reason setting the resolution @2560x1440 kills the wifi (BCM943225). It works fine on lower resolutions though.


Can't figure out why.