Hello I just wanted to chime in and report that I'm having the same issue as the other users in this thread. I have the Asus Z87-Pro motherboard with a i7 4770K processor with a Asus MX279 monitor. Now when the monitor is connected to VGA it will go into sleep state but once connected to HDMI monitor will not go into sleep state but will black the screen. Please let me know what I can do to help so this issue can be fixed for all of us.
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