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I have Ubuntu 12.04 and was trying to install updates. Big mistake because the next thing I know I just have a blank wallpaper screen and nothing else. I've tried every piece of advice given on various post (unity --reset, ccsm) nothing works. Also, none of my USB ports are working either and seriously have no idea what that's all about.

Eliah Kagan
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1 Answers1

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Do you have an nvidia video card? Run the "additional drivers" tool and install the "nvidia_experimental_310" driver. This will fix the problem with the left edge not triggering the launcher.