[ubuntu] Gazelle laptop hobbled after Ubuntu reinstall

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http://ubuntuforums.org – Hello-- A few months ago I purchased a Gazelle Professional laptop. I've been very happy with it. Recently I executed an errant dpkg command that ran roughshod over my system, deleting numerous critical system files. I was left with no choice but to reinstall Ubuntu from DVD. The process was unexpectedly painless, even preserving my home directory, but I'm left with a system that's broken in some important ways: 1. The touchpad is nonresponsive, and remains so even after I press FN+F1. 2. There's no sound. 3. When I open the hibernating laptop, the screen flashes briefly, but then rem (Hardware)