claure Posted October 23, 2014 Share Posted October 23, 2014 Hello everyone , I have installed Yosemite without any problems, but I can't turn on the graphics card, i have changed the info plist kext of AMD4800Control ATIRadeonX2000 ( I had taken from here and inserting the device id , the system sees the card but no QE / CI.Grazie for the help. google translate Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/ Share on other sites More sharing options...
fantomas Posted October 23, 2014 Share Posted October 23, 2014 I had taken from here and inserting the device id hi you took these kexts? http://www.insanelymac.com/forum/files/file/318-qe-ci-exotic-patch/ hd 4850 device-id is already added Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2074733 Share on other sites More sharing options...
claure Posted October 23, 2014 Author Share Posted October 23, 2014 Yes Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2074787 Share on other sites More sharing options...
sapman Posted October 26, 2014 Share Posted October 26, 2014 Unsigned kexts won't load on Yosemite. Boot with kext-dev-mode=1 to get the kext to load. This should solve your problem. Worked for me! Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2076309 Share on other sites More sharing options...
uzmi Posted October 28, 2014 Share Posted October 28, 2014 Look here: http://www.insanelymac.com/forum/topic/301999-mavericks-1095-clover-y-ati-4850-mini-howto/?do=findComment&comment=2076423 Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2077545 Share on other sites More sharing options...
claure Posted October 30, 2014 Author Share Posted October 30, 2014 Thanks to all for your answers ,the graphics work very well now . 1 Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2078657 Share on other sites More sharing options...
snakeman Posted November 11, 2014 Share Posted November 11, 2014 What about dual monitors? snakeman Link to comment https://www.insanelymac.com/forum/topic/301874-qeci-yosemite-ati-hd-4850/#findComment-2083988 Share on other sites More sharing options...
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