Lost ability to choose 3440x1440 resolution

would these steps work for me if i just bought a mac mini late 2012 and immediately upgraded to Yosemite without ever setting up 4k on Mavericks ? I tried the steps and i still am stuck at 1080p so far 😟

Hi Richard , My windows 7 on bootcamp is shooting 4k 30fps just fine , but i never even had it set up on mavericks as i directly upgraded to yosemite .... would your steps work for me too ? I think i did them correctly and I'm still stuck at 1080p on the mac boot even after the safe mode tweak etc. Is there a way to check if the kext actually worked ?

I should note the when the safe mode worked for me I did remove the plug from the port and switch ports intermediately so that the monitor could register as a new screen. I replaced the both .kext with the old versions (Capri and Azul). Also, I replaced the Displays (System/Library/Displays) folder completely with an old version so the modified overrides weren't there. I hope this helps.

Oh and lastly make sure you try to Option-Click on the radio button to reveal any hidden resolutions.

estarr , I've only seen a link on the capri kext .... do you know where i can get the azul ? Im running a mac mini 2012 .... When i try the option click i only get resolutions lower than 1080p currently ... thanks a bunch

bkpman, I actually used an early version of both .kext files (from a fresh install of Yosemite before any updates, someone also suggested going into the Time Machine back up). I didn't tamper with the terminal permissions or the inner workings of the .kext. I simply got older versions.

Also, do replace the Display folder. It has specific instruction to the OS on how to respond to each peripheral monitor. At the point of replacing the files, going into safe mode and plugging the display in and out the previous icon appeared as well. (see picture)

did you guys use any over clocking patch in mavericks to get it to work in the first place ?

I can also confirm this works on my MacBook Air, 11-inch, 2012 (MBA5,1), Intel HD4000 (1024MB) video card, now running Yosemite 10.10.1

Following the steps is extremely important.

1. Download Kexbeast (http://www.tonymacx86.com/downloads.php?do=file&id=32)

2. Download Mavericks Capri Kext (https://www.dropbox.com/s/53trsm2m4v6teb0/AppleIntelFramebufferCapri.kext.zip?dl =0)

3. Extract it to your desktop (I failed a few times because I missed this step)

4. Execute the following two commands a Terminal:

sudo nvram boot-args=kext-dev-mode=1

cd Desktop && sudo chown -R root:wheel AppleIntel* && sudo chmod -R 775 AppleIntel*

5. Run KextBeast

6. Reboot.

Another success here with 10.10.1. Followed the directions Kobe Beef listed and works fine. Sure wish Apple would fix this issue on their own soon.

This is on a late 2012 Mac Mini.

I have the late 2012 Macmini and a new 849 dollar LG um95-p arriving this weekend from Adorama.

Great price

I will be doing the tweak to get it working in 3440 x 1440 mode asap and will post results here..

Monitor arrived tonight and works perfect on my late 2012 Macmini after the kext hack.

Thanks to all

Now running Yosemite 10.10.1 with the 3440 x 1440 resolution.

Thanks to all and have a happy new year.

Also have my LG 34 inch screen working in full resolution on my Mac Mini 2012 using this hack on 10.1. Thanks guys for this forum contribution..

just wondering if we'll be able to continue using this hack in the next updates of Yosemite..

I'm also thinking about using an external GPU with a Thunderbolt PCI-e chassis. Anyone has experience with this config?

Hey guys,

I have a late 2012 MacMini (entry model with 16gb of ram) and I haven't had success with this 😟. I have an ASUS pb287q connected with a displayport cable (and the monitor is configured to DP 1.2) and I did all the steps twice but no 4k resolution even after going to system preferences, displays and clicking on "scaled" with the alt option key hold down. I've done a clean install of Yosemite 10.10.1 and it still didn't work after patching. The highest resolution I can get is 1080p. I'm wondering if I'm doing something wrong (I'm not a newbie and the steps are fairly easy to follow) or if my monitor is not compatible with Yosemite/MacMini. Unfortunately, I can't try on any other 4k monitor to see if it'd work.

I'd appreciate any help.

Thanks

Yes, one of the earlier users had to re do the hack when his Yosemite upgraded. But the next upgrade may have the wanted fix as part of the upgrade. Hope so.