takeawaydave Posted July 2, 2015 Share Posted July 2, 2015 Updated to Yosemite 10.10.4 - machine won't start normally and will ony boot in safe mode. I use AMD R7 270 (no x) and this was working perfectly dual screen in 10.10.3 I suspect the problem is now due to the new 10.10.4 kexts. After I updated the machine did boot but resolution / display was not good as usual when AMDX4000Radeon and AMD7000Controller kexts are updated. So I did usual move of updating the device id's in the respective Info.plist files. I then cleared the kextcache using Kext Wizard and restarted. The machine boots but it looks like a framebuffer issue (perhaps?) and the screen goes white and then around 7/8 seconds later reboots. If I boot (clover) in safe mode the machine starts up. Link to comment Share on other sites More sharing options...
takeawaydave Posted July 6, 2015 Author Share Posted July 6, 2015 anyone able to provide any pointers, hints or help ? Link to comment Share on other sites More sharing options...
takeawaydave Posted July 7, 2015 Author Share Posted July 7, 2015 Hmmm no one in the mood ? Did a reinstall of 10.10.4 today using combo updater and got exactly the same behaviour where the install finishes ok but when its rebooted the graphics are glitchy due to there being no device id match in AMD7000Controller.kext and AMDRadeonX4000.kext. When I add in 0x68111002 in to the Info.plists for both of these kexts, rebuild kext cache and then reboot the screen does not render. Link to comment Share on other sites More sharing options...
Recommended Posts