tagsOf Posted January 9, 2014 Share Posted January 9, 2014 After failing to update Mavericks 10.9.1 from Mountain Lion 10.8.2, i start installing it from scratch.I install basic stuff of well knwon tony product and audio drivers by toledo without DSDT for my ALC887.The installation procedure is ok and i can boot on safe mode using flags :GraphicsEnabler=Yes -xWhen i boot without safe mode, i hang on the line : Sound assertion in AppleHDAEngine at line 581Configuration :Core i7 3770ASUS P8Z77-M (Audio ALC887)Nvidia GTX 560TiAny helps are welcome, i spent hours after searching solution on the web without success.Sorry for my poor english, it's not my native language. Link to comment https://www.insanelymac.com/forum/topic/295188-clean-install-of-mavericks-hang-on-sound-assertion-in-applehdaengine-at-line-581/ Share on other sites More sharing options...
toleda Posted January 10, 2014 Share Posted January 10, 2014 When i boot without safe mode, i hang on the line : Sound assertion in AppleHDAEngine at line 581 Sound assertions do not hang/stop boot; the boot problem is likely a graphics problem. To fix the sound assertion, a dsdt edit is required; search MaximumBootBeepVolume Link to comment https://www.insanelymac.com/forum/topic/295188-clean-install-of-mavericks-hang-on-sound-assertion-in-applehdaengine-at-line-581/#findComment-1983670 Share on other sites More sharing options...
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