gpspl Posted July 8, 2015 Share Posted July 8, 2015 Hi, i have a Samsung 540u with intel hd4000. I can't get gpu to work. I tried all id platform (In DSDT and clover, but not at same time). On HDMI i have qe/ci but internal screen stays black (after verbose). It's strange becouse internal creen is recognized as 22" monitor (maybe wrong edid). I select inject edid but it only gives me some glithes from verbose mode on black screen (some lines but not a screen of osx). Link to comment https://www.insanelymac.com/forum/topic/307012-samsung-540u-hd4000-black-screen/ Share on other sites More sharing options...
gengik84 Posted July 8, 2015 Share Posted July 8, 2015 Hi. you've tried on config.plist inject intel and ig-platform-id = 01620005 Link to comment https://www.insanelymac.com/forum/topic/307012-samsung-540u-hd4000-black-screen/#findComment-2151716 Share on other sites More sharing options...
gpspl Posted July 8, 2015 Author Share Posted July 8, 2015 Yes all of them 1-9 a,b Link to comment https://www.insanelymac.com/forum/topic/307012-samsung-540u-hd4000-black-screen/#findComment-2151720 Share on other sites More sharing options...
gpspl Posted July 11, 2015 Author Share Posted July 11, 2015 What do to solve problem: -Inject EDID generated from windows -Inject id platform 0x01620003 -Patch DSDT to enable backlight controll (ivy_sandy backlight from rehabman) -Install ACPIBacklight.kext from rehabman Link to comment https://www.insanelymac.com/forum/topic/307012-samsung-540u-hd4000-black-screen/#findComment-2152363 Share on other sites More sharing options...
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