如果安装完显卡驱动后工具栏和任务栏消失,请重新安装ubuntu desktop
rm -rf ~/.compiz* ~/.config/compiz* ~/.cache/compiz* ~/.gconf/apps/compiz* ~/.config/dconf ~/.cache/dconf ~/.cache/unity
sudo apt-get install ubuntu-desktop
链接如下:
http://forum.ubuntu.org.cn/viewtopic.php?f=77&t=391736