andrew.j.aguirre Posted February 11, 2015 Share Posted February 11, 2015 So, yesterday, I finally upgraded my blazing GeForce GTS 250 by purchasing an XFX R9 270X (honestly, I think my onboard graphics are better). I bought it because everything that I read was that it was working OOB under Yosemite. Unfortunately, I could not get it to work properly. I've been searching online for troubleshooting threads, but, I am at a loss. If I do no injections, it will show up as "Display 5 MB" in the About this Mac window. When I inject "0x68101002" into ATI, it shows up as mostly correct as "ATI R9 270X 5 MB". Of course, because of the five megabyte graphics memory, the transitions are very choppy, and just overall horrible performance. Does anyone have some insight on what could be wrong? Thank you! Link to comment Share on other sites More sharing options...
AkimoA Posted February 11, 2015 Share Posted February 11, 2015 What u do is very simple get both these Kexts -> http://cl.ly/1Y193z230L40 Install ehm via Kext Utility ( Drag and Drop) Once they done installing open up a Terminal Window run this line ( takes a bit ) sudo kextcache -prelinked-kernel when done Reboot and u should have Full Resolution and Working QE/CI all that was done running Clover 3168 / 10.10.1 / AMD System without InjectATI set to true kext-dev-mode=1 ( should be set in the Bootflags offcourse) Good Luck Link to comment Share on other sites More sharing options...
andrew.j.aguirre Posted February 12, 2015 Author Share Posted February 12, 2015 Thank you, but no avail. I've tried multiple times to get that to work. Upon installing kexts, and running the kextcache script, I could not restart my computer into OS X. Every time I would get an error when booting with -v that is "OsxAptioFixDrv: requested memory exceeds our allocated relocation bloc". I researched that error, but nothing worked. I then have to boot using a flash drive and Chameleon, and reinstall Yosemite. Link to comment Share on other sites More sharing options...
andrew.j.aguirre Posted February 13, 2015 Author Share Posted February 13, 2015 Decided to exchange it for a GTX 760. After a little tinkering with booting up, it runs perfectly. And, no fear of upgrading to 10.10.2. It is a bummer that I couldn't get the r9 270X working, but, I must have changed something over time that stopped it from working properly. Link to comment Share on other sites More sharing options...
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