A Fedora user emailed me asking for help. He had a dead pixel on his LCD display and wanted to know if there was anything he could do.The simple answer is no. A dead pixel is dead, and most vendors won’t honour a warranty agreement for one dead pixel. But it is not always that simple, what if the pixel is only stuck?http://en.wikipedia.org/wiki/Stuck_pixel says:
A stuck pixel is a common pixel defect on LCD screens, where any number of the 3 sub-pixels are faulty, producing (most commonly) permanent red, green and blue pixels on the screen. Similar to (and often falsely labeled as) a dead pixel, whose 3 sub-pixels are permanently off, producing a black pixel. While one is not very noticeable on a high definition screen, stuck pixels tend to occur in groups, and are most easily noticed on dark or black screens.
Wikipedia suggests using UDPixel, which is incorrectly labelled windows only. UDPixel is written in .Net and mono runs it without too many problems. Download the zip file, extract it, and run: mono UDPixel_en.exe. Hopefully if you have a stuck pixel, this should fix it.
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