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Dell Latitude E6230 Core i5-3320M/Intel HD 4000 no hdmi out


Kostua
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Installed Sierra on Latitude E6230, BIOS A11, Core i5-3320M 2.6GHz, 4Go DDR3-1600, Intel HD 4000, 1366x768 by the following this guide.  All work except hdmi out. I connect external monitor ASUS VW246H 1920 x 1080 it recognized in a system but on screen only "no signal". But if I checked "mirroring" in display setting and change refresh rate to 50 Hz - the image appears. But after reboot still "no signal" situation. Ok, I try to connect  LG TV image appear at boot time and works fine but after reboot "no signal". Maybe it's а hardware related problem, but same setup and ubuntu work fine.  

Any idea?

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