- Joined
- Aug 13, 2011
- Messages
- 55
- Motherboard
- Gigabyte GA-Z68X-UD4-B3
- CPU
- i7 2600K
- Graphics
- RX 560
This is not a guide as such, but more of a what worked/didn't work. Hardware is a GA-Z68X-UD4 and a 2600k CPU with 8GB of RAM. This setup has worked flawlessly since OS X 10.6.8 all the way through to 10.9.5, with minimal problems upgrading, etc. However, Yosemite turned into more of a challenge:
1. You must have a UEFI bios installed - on my "legacy" bios that had worked from 10.6 to 10.9, I could not get a clean boot.
2. My first attempt was with Unibeast/Multibeast/Chimera from this site. I was able to get Yosemite to boot only with the AppleACPIPlatform rollback installed - without that, I got errors around [PCI configuration begin]
3. Once the AppleACPIPlatform rollback was done, I could boot maybe 50% of the time; the other 50% the boot sequence failed at various points. However, if the boot was successful, the system ran fine from then on.
4. To get round the 50% boot success problem, I chose to change to Clover for the boot loader. I upgraded to Clover using the guide on this site (http://www.tonymacx86.com/mavericks...-how-install-os-x-mavericks-using-clover.html), obviously substituting Yosemite for Mavericks. I used Clover_v2k_r2953, and the UEFI option for the install. The kexts installed were the usual FakeSMC.kext, as well as RealtekRTL81xx.kext for networking. Initially I used the config.plist from the guide.
5. The Clover install booted ok, but with some p-state errors.
6. My first attempt at dealing with the p-state errors was to create a ssdt using the HP ProBook Installer. That worked, a clean boot with no errors, and the system ran fine. The only slight problem was that at idle, there was a very faint high pitched whine, probably coming from the motherboard's DC to DC converters.
7. As a result of the whine problem, I removed the ssdt, and reconfigured Clover with "Drop OEM", "Generate P states" and "Generate C states" set to on. That resolved the whine and gives no error messages on boot, although power management is probably somewhat less efficient that if I was using the ssdt.
8. Finally, I reinstalled the original AppleACPIPlatform.kext. This worked fine - it appears that the roll back is only needed only for the Chimera boot loader.
Recommendations:
Having gone through this process, I'd recommend the following:
1. Go directly to Clover rather than the Unibeast/Multibeast route - it's more trouble/less convenient, but in my case worked much better.
2. When you install Clover, it's probably best to set "Drop OEM", "Generate P states" and "Generate C states" to on immediately.
1. You must have a UEFI bios installed - on my "legacy" bios that had worked from 10.6 to 10.9, I could not get a clean boot.
2. My first attempt was with Unibeast/Multibeast/Chimera from this site. I was able to get Yosemite to boot only with the AppleACPIPlatform rollback installed - without that, I got errors around [PCI configuration begin]
3. Once the AppleACPIPlatform rollback was done, I could boot maybe 50% of the time; the other 50% the boot sequence failed at various points. However, if the boot was successful, the system ran fine from then on.
4. To get round the 50% boot success problem, I chose to change to Clover for the boot loader. I upgraded to Clover using the guide on this site (http://www.tonymacx86.com/mavericks...-how-install-os-x-mavericks-using-clover.html), obviously substituting Yosemite for Mavericks. I used Clover_v2k_r2953, and the UEFI option for the install. The kexts installed were the usual FakeSMC.kext, as well as RealtekRTL81xx.kext for networking. Initially I used the config.plist from the guide.
5. The Clover install booted ok, but with some p-state errors.
6. My first attempt at dealing with the p-state errors was to create a ssdt using the HP ProBook Installer. That worked, a clean boot with no errors, and the system ran fine. The only slight problem was that at idle, there was a very faint high pitched whine, probably coming from the motherboard's DC to DC converters.
7. As a result of the whine problem, I removed the ssdt, and reconfigured Clover with "Drop OEM", "Generate P states" and "Generate C states" set to on. That resolved the whine and gives no error messages on boot, although power management is probably somewhat less efficient that if I was using the ssdt.
8. Finally, I reinstalled the original AppleACPIPlatform.kext. This worked fine - it appears that the roll back is only needed only for the Chimera boot loader.
Recommendations:
Having gone through this process, I'd recommend the following:
1. Go directly to Clover rather than the Unibeast/Multibeast route - it's more trouble/less convenient, but in my case worked much better.
2. When you install Clover, it's probably best to set "Drop OEM", "Generate P states" and "Generate C states" to on immediately.