hailahaiela Posted November 11, 2014 Share Posted November 11, 2014 I had a fully working 7850 2gb on mavericks 10.9.5 with i3 2120 & GA B75M-D3H. Installed yosemite as upgrade today and the gpu stopped working.Reinstalled the mavericks kexts but it remains same. I use the latest chameleon in legacy boot(no UEFI) and i always booted with GE=No. Here is the problem: I have a 21.5 inch dell monitor. here is my org.chameleon.Boot.plist: "IGPEnabler=Yes" doesnt help. Im adding my dsdt.aml and working kexts for mavericks below. I need help.What should i do? Thanks in advance. 7850 kexts.rar DSDT.rar Link to comment Share on other sites More sharing options...
artur_pt Posted November 11, 2014 Share Posted November 11, 2014 hello first never use another mac os x kext ... http://rampagedev.wordpress.com/2012/12/04/about-amd-7970-working-with-full-qe/ good hack 1 Link to comment Share on other sites More sharing options...
hailahaiela Posted November 11, 2014 Author Share Posted November 11, 2014 Thanks for looking into my matter.I shall try that and post here. hello first never use another mac os x kext ... http://rampagedev.wordpress.com/2012/12/04/about-amd-7970-working-with-full-qe/ good hack Btw when i try to boot with GE=Yes,it shows memory allocation error. I have in bios settings: Init display first=auto and Internal graphics=disabled. How to fix it? (to boot via GE=Yes) Link to comment Share on other sites More sharing options...
artur_pt Posted November 11, 2014 Share Posted November 11, 2014 hello 7xxx series amd is to boot with GE=No good hack Link to comment Share on other sites More sharing options...
joe75 Posted November 11, 2014 Share Posted November 11, 2014 GraphicsEnabler=Yes is only needed for forcing custom framebuffer. Do as artur says and reinstall all stock 10.10 amd kexts, your 6819 id is already included. 1 Link to comment Share on other sites More sharing options...
kvonlinee Posted November 11, 2014 Share Posted November 11, 2014 Try these one -f -v GraphicsEnabler=No AtiConfig=Pitcairn AtiPorts=4 If it show blackscreen add PciRoot=1 If it is hang post a picture. Good luck 1 Link to comment Share on other sites More sharing options...
hailahaiela Posted November 11, 2014 Author Share Posted November 11, 2014 Try these one -f -v GraphicsEnabler=No AtiConfig=Pitcairn AtiPorts=4 If it show blackscreen add PciRoot=1 If it is hang post a picture. Good luck Sure i will.But i am starting to understand the huge mistakes i have made.The dsdt im using is not even mine.So i am learning and making my own. GraphicsEnabler=Yes is only needed for forcing custom framebuffer. Do as artur says and reinstall all stock 10.10 amd kexts, your 6819 id is already included. I now understand sir. Link to comment Share on other sites More sharing options...
hailahaiela Posted November 12, 2014 Author Share Posted November 12, 2014 Hello,I coudnt understand where to edit and paste the dsdt code.I tried my best for long time,please help. My ioreg and dsdt files are here https://drive.google.com/file/d/0B3LMtnNcKGskbkVqUUpVUFhndU0/view?usp=sharing https://drive.google.com/file/d/0B3LMtnNcKGskRnJMMFc2d2xYY3M/view?usp=sharing Link to comment Share on other sites More sharing options...
hailahaiela Posted November 12, 2014 Author Share Posted November 12, 2014 I dont understand where to paste the code actually,plz help. Link to comment Share on other sites More sharing options...
hailahaiela Posted November 12, 2014 Author Share Posted November 12, 2014 Thanks for looking into my matter.I shall try that and post here. Btw when i try to boot with GE=Yes,it shows memory allocation error. I have in bios settings: Init display first=auto and Internal graphics=disabled. How to fix it? (to boot via GE=Yes) I couldnt boot without safemode from hdd.I was able to boot from hdd using the installation usb with -v GraphicsEnabler=No.I dont know if that will work or not. Anyways i removed my dsdt,restarted in the previous manner and ran your RunMe.app.Here is the SendMe.zip. https://drive.google.com/file/d/0B3LMtnNcKGskUlNfY0MxMExMa28/view?usp=sharing Link to comment Share on other sites More sharing options...
kvonlinee Posted November 12, 2014 Share Posted November 12, 2014 Why you don't try my flag Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 Why you don't try my flag i use chameleon Link to comment Share on other sites More sharing options...
artur_pt Posted November 13, 2014 Share Posted November 13, 2014 hello try this one the ati is inject under PEGP Aji framebuffer .. if u want test others .. just edit the dsm method DSDT.aml.zip good hack Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 hello try this one the ati is inject under PEGP Aji framebuffer .. if u want test others .. just edit the dsm method DSDT.aml.zip good hack Thanks a ton.i ll try and report back Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 (edited) hello try this one the ati is inject under PEGP Aji framebuffer .. if u want test others .. just edit the dsm method DSDT.aml.zip good hack Graphics card not working.name is showing though. Also i think the device id of gpu u put in DSDT is wrong. 0x18, 0x68, should be 0x19, 0x68. I changed that and tested,same result. Earlier i restored original amd7000 kext from yosemite install usb drive. 2-3 messages about RadeonSensors : still waiting for accelarator to start com.apple.AMDRadeonAccelarator : The vtable '__ZTV20AMDAcclEventMachine' is malformed.Make sure your kext has been built against coorect headers. failed to load kext from com.apple.AMDRadeonAccelarator - link failed/failed to load Edited November 13, 2014 by hailahaiela Link to comment Share on other sites More sharing options...
artur_pt Posted November 13, 2014 Share Posted November 13, 2014 hello check ur kext .. must use the original ones from 10.10 build .. about the radeon sensors for now .. delete it .. is a plugin from fakesmc must boot with ge=no if that don't work .. sorry don't have no clue... maybe is a good idea .. make a clean install .. that system is messy .. with change of kext .. caches.. good hack 1 Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 thanks,i was thinking about making a clean install too.Its just too messy. Also i was thinking about moving to clover,though i have to do legacy boot. Is that a good idea? Link to comment Share on other sites More sharing options...
artur_pt Posted November 13, 2014 Share Posted November 13, 2014 hello yes .. clover is better .. even in legacy.. good hack Link to comment Share on other sites More sharing options...
kvonlinee Posted November 13, 2014 Share Posted November 13, 2014 i use chameleon Yes it in chameleon. Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 good news.fresh install did help.gpu is recognized as amd radeon hd 7xxx 2048 mb in first boot.I will report with more data later. P.S. clover seemed hard to understand at the moment and this is a great forum. Link to comment Share on other sites More sharing options...
kvonlinee Posted November 13, 2014 Share Posted November 13, 2014 good news.fresh install did help.gpu is recognized as amd radeon hd 7xxx 2048 mb in first boot.I will report with more data later. P.S. clover seemed hard to understand at the moment and this is a great forum. That good for you.Acttually clover work uot better than chameleon, just because you can't config it rigth. 1 Link to comment Share on other sites More sharing options...
hailahaiela Posted November 13, 2014 Author Share Posted November 13, 2014 ran into a new problem.didnt want to start a new thread.KP: P-State Stepper error 18 at step 2 incontext 2 on cpu 0.how to fix it? No SSDT,just configured some smbios thing. Link to comment Share on other sites More sharing options...
kvonlinee Posted November 13, 2014 Share Posted November 13, 2014 In clover fix easy Looking for the early reboot at http://www.insanelymac.com/forum/topic/302376-guide-patching-the-kernel-for-haswell-cpus-xcpm-early-reboot/?hl=%2Bearly+%2Breboot&do=findComment&comment=2084940 1 Link to comment Share on other sites More sharing options...
4everAnoob Posted November 13, 2014 Share Posted November 13, 2014 Sorry offtopic, but rather not start a new one if problem has easy fix. When running the unigine benchmark on my HD6870, the screen goes black after about 15 seconds and never returns. After hard reset everything is OK again. Hardware is 100% OK and stable in windows (furmark intelburn etc...) Is this is a known issue with this video card? Yosemite BTW Link to comment Share on other sites More sharing options...
kvonlinee Posted November 14, 2014 Share Posted November 14, 2014 Sorry offtopic, but rather not start a new one if problem has easy fix. When running the unigine benchmark on my HD6870, the screen goes black after about 15 seconds and never returns. After hard reset everything is OK again. Hardware is 100% OK and stable in windows (furmark intelburn etc...) Is this is a known issue with this video card? Yosemite BTW Start a new topic, put your hard ware and instalation detail to it, some other have more knowledge about it and help it out more easy. Link to comment Share on other sites More sharing options...
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