Question Horizontal Flicker/Wave lines on LED monitor ?

alex.stoychev

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Aug 23, 2017
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Hi i have Dell UltraSharp u2212hm. When i connect it to my pc via VGA cable it starts to have horizontal lines moving vertically on my monitor. But when i connect it via display port everyting is normal, no lines, no waves and its ok. I have another monitor and tryed the vga cable on him but there is no problem on him, only on my monitor, so the problem is not in the cable. What can be the problem?(sorry for may eng)
 

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