nyjt Posted November 18, 2015 Share Posted November 18, 2015 Hi, I have an issue with my new 40" UHD LG TV (40UF695V) that I want to use with my Yosemite. My hardware is a Gigabyte Z97x-ud3h-bk motherboard with a i7-4790K cpu. And I want to use my integrated graphics HD4600. I don't want to buy a dedicated one while I don't use any 3D application or game. The problem is the OS X does not allow to select the max resolution (3840 x 2160). I tested this resolution with Ubuntu live USB stick and the TV work perfectly with my HDMI cable at 4K@24Hz. The TV max Hz is 60 but my HD4600 has a 24Hz limitation. This 24Hz would be perfect for me (I try it out in Ubuntu), but I think OS X block this setting somewhere. How can I unlock this setting and select the max resolution? (Edit some files, patch some kexts, clover setting, etc.) Thanks in advance. Link to comment https://www.insanelymac.com/forum/topic/309443-4k-uhd-lg-tv-with-yosemite-and-intel-hd4600-full-resolution/ Share on other sites More sharing options...
PippoX0 Posted November 18, 2015 Share Posted November 18, 2015 Just one try : Extract EDID info of your UHD tv with Linux live. Then inject Edid in DSDT or monitor info in displays/overrides or simply setting in Clover. Search on forum for howto You can not use UHD tv because Osx doesn't recognize it. Link to comment https://www.insanelymac.com/forum/topic/309443-4k-uhd-lg-tv-with-yosemite-and-intel-hd4600-full-resolution/#findComment-2189426 Share on other sites More sharing options...
nyjt Posted November 18, 2015 Author Share Posted November 18, 2015 Thanks the reply. I'll try this. Link to comment https://www.insanelymac.com/forum/topic/309443-4k-uhd-lg-tv-with-yosemite-and-intel-hd4600-full-resolution/#findComment-2189655 Share on other sites More sharing options...
nyjt Posted November 18, 2015 Author Share Posted November 18, 2015 It does not help. BTW, ioreg contains the right EDID without injection: $ ioreg -l | grep IODisplayEDID | | | | "IODisplayEDID" = <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> Link to comment https://www.insanelymac.com/forum/topic/309443-4k-uhd-lg-tv-with-yosemite-and-intel-hd4600-full-resolution/#findComment-2189675 Share on other sites More sharing options...
jperkins909 Posted November 18, 2015 Share Posted November 18, 2015 Might be worth a shot to try creating a custom resolution using SwitchResX http://www.madrau.com/data/switchresx/SwitchResX4.zip Link to comment https://www.insanelymac.com/forum/topic/309443-4k-uhd-lg-tv-with-yosemite-and-intel-hd4600-full-resolution/#findComment-2189676 Share on other sites More sharing options...
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