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I'm on Ubuntu 14.04.2 on a HP Z230 workstation with dual monitors. Very often in the morning, the screens are just blank and don't seem to wake up from suspend / power save mode. To fix it, I need to go to tty1 and reboot my PC.

I checked the "Power" settings and it's configured to "Don't Suspend" so it shouldn't be entering into any power save mode. This only seems to happen only overnight - my monitors always come back fine after a 1 hr lunch.

mchangun
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  • Please review http://askubuntu.com/questions/546818/displayport-monitor-not-detected-if-switched-off-and-on-again and detail whether you are having any of those issues. – david6 Feb 24 '15 at 08:56

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