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Hi , TRUE SOLUTION FOUND I had the same issue on my GA-Z97-D3H with a SAPPHIRE ATI R9 290 graphic card, and I found the solution. Some graphic cards manufacturers use a switcher to activate turbo mode or overclocking mode, and others like Sapphire use it to activate full UEFI mode. The...

Hi, I have a Samsung R780 with core i5 520m, everything is working except when i close the lid ,computer sleep normaly , but when i open it , it doesn't wake.So i'm forced to shut down it with the power button. Otherwise I have my proper DSDT extract from ubuntu and with some modification like...