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Sierra Optiplex 9020 - ATI HD8490 + Audio Help.


spikar
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Successfully installed Sierra on a Dell Optiplex 9020. 

 

Wondering if I can get the ATI HD 8490 Graphics Card working? 

 

It boots up - just doesn't run smooth - screen flicker. 

 

Anyone can assist me? 

 

Also, Needing assistance with the Audio not working. 

Plugging in speakers via the rear and doesn't work. 

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Hey Jake, 

 

Lilu + whatevergreen kext didn't solve. 

 

I've removed the gpu and running onboard HD. 

 

Get's stuck about half way on the apple loading logo. 

 

Tried booting off the USB, gets stuck as well. 

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