Ubuntu: What causes the red dots on the screen?


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


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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