Ubuntu: What causes the red dots on the screen?



Question:

I did a rebuild today using 14.04 and I had the red dots during live cd and after install. I created another flash drive from the same image(ubuntu-14.04.2-desktop-amd64.iso) and I get the same issue using a different flash drive. The machine has windows installed on it and when I boot into windows there are no graphical issues.

Here is a camera shot, its not showing up on a screen capture. Im pretty sure its not a cable issue or monitor issue. I have had the same result on two different monitors one using the DVI out and on using the hdmi out

Screenshot with the dots


Solution:1

not present in vnc, its corrected after installing the nvida drivers according to this thread http://ubuntuforums.org/showthread.php?t=2265505 Which I have had to do on past installs with GTX750 but it has always given me the additional drivers alert so I figured it was no longer required.

thanks everyone


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