Narek-T Posted September 11, 2014 Share Posted September 11, 2014 Built-in monitor works, but its show only black screen. When I adjusting brightness it affects to built-in display. Black screen becomes brighter or darker.When I remove HDMI and start os without second monitor, built-in screen works fine. The problem only when I start os with connected HDMI monitor. When I hot plug HDMI after booting - both monitors work fine.. The problem appears after install brightness control (dsdt patch and ACPIBacklight kext) laptop Acer 5750G/2630QM/HD3000/HM65 with Mavericks 10.9.4. darwin dumper zip http://www.dropbox.com/s/qav8uvq4g7uhiyv/DarwinDumperReports.zip?dl=0 Link to comment https://www.insanelymac.com/forum/topic/300835-built-in-display-problem-with-connected-hdmi/ Share on other sites More sharing options...
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