LG l1953S sleep issues when mac mini is in stand-by . No cable connected...

Hi ..
Yesterday i started in the fabulous world of MAC with my brand new MAC MINI . The problem that i have is that when the MAC mini is in stand-by the monitor is not in sleep state , and i get in the monitor screen " check cable " . So i have to disconnect manually the monitor when mac is in sleep state .
I am using mini-dvi to vga adapter (original mac ) .
¿What is the problem ?
Thanks a lot ...

Same issue different twist. I have a Sony Bravia that freezes last image before the energy saver kicks in. It also randomly give me the "no pc connected" I have to unplug my mini display port to VGA adapter to re-sync the display.....
very lame.

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16GB Ram
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04/04/2015 02:35:41.000 kernel[0]: hibernate_page_list_setall preflight pageCount 265101 est comp 45 setfile 556793856 min 2147483648
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04/04/2015 02:35:41.000 kernel[0]: [0x506da5000, 0x180000]
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I have checked the hardware and there are no problems. Disk permissions there are no errors. everything seems ok?
I was wondering if anyone else with a mac mini late 2014 has or have been having the same problem?
Many thanks

You asked "Normally and correct me if I am wrong power nap would cause the computer to wake every hour?"
During Power Nap normal TM backups still happen so if you have Power Nap and default TM settings, TM will still backup every hour.
Otherwise I have no info on your other problems

LG l1953S sleep issues when mac mini is in stand-by . No cable connected...

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