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From Wikipedia article on DVI: In single-link mode, the maximum pixel clock frequency is 165 MHz that supports a maximum resolution of 2.75 megapixels (including blanking interval) at 60 Hz refresh. For practical purposes, this allows a maximum 16:10 screen resolution of 1920×1200 at 60 Hz. To support higher-resolution display devices, the DVI ...


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What is likely happening, as you can make out the faint display, is that the backlight of the monitor is failing. That may be a florescent tube or LED. Try connecting only that monitor to your system and cycle a few times between power saving and on. If the behavior persists then it is very likely a hardware problem. I am assuming it is a flat-screen ...


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I would add following to Craig Nelson's answer : You may try noting down the time for 2-3 instances. If there is a fixed time gap then there may be 2 issues : --> There must be a script that will be executed by crond after every few hours OR --> The script that executes the "messy" command is doing following : 1. Executes the command 2. sleep for some ...



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