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Screen flickering AMD

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I successfully installed Yosemite on my PC with following specs:


Mainboard: ASUS M5A99FX Pro 2.0

CPU: AMD FX 8350

Grafik: Asus Radeon HD7870-DC2-2GD5-V2


I Used amd64 and npci=0x2000 for install

After install i got gray screen.

I backed up all graphic kexts and it worked.

Installed Multibeast with DSDT Free

Reinstallen AMDSupport.kext, AMD7000....kext

after that i have to boot with npci=0x2000 and PCIRootUID=1.

screen resolution works (1920x1080) but the screen flickers at most apps e.g. notes, Google chrome

I tried GraphicsEnabler=Yes/No


second problem is when i install clover (UEFI version) i can't use my keyboard and mouse after choosing my hdd.

Tried USBBusFix=Yes


sry for this English :D



Ok no Problems left all works perfect

can be closed

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what did you do to fix the flickering problem? had same on my and pc but was never able to fix it by my self.

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