See this video, I have recorded the issue I am facing with one of my three U2515H monitors.
(Please visit the site to view this video)
This happens rarely when resuming from screen-saver sleep mode on one of the three. It require a power cycle on the monitor to resolve. I have tried switching ports on my graphics card, new power cable, new display port cable, and removed the USB upstream cable.
Additionally on the one monitor, when in normal use there is a rare occasional grey/block band flicker for a split second identical the the artefacts in the above video, occurs without the monitor flickering off. Like this from the video, I have attempted to capture when it happens organically but it is very unpredictable but the below is exactly what happens.
It is a warranty replacement, whether that affects the situation I do not know but I thought I should mention it. Should I call up Dell and get a replacement?
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U2515H - Random flickering with artefacts after waking from sleep, and rare random black/grey block artefacts when in use
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